Diagnostic Routines
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
ENGAGEMENT CONCERN: NO FORWARD
| Possible Component | Reference/Action | |
|---|---|---|
| 201 - ELECTRICAL ROUTINE | ||
| Powertrain Control Systems | ||
| No Electrical Concerns | ||
| 301 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Shift Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks or ball plug missing or leaking, or a plugged hole | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal ring, No. 3 or No. 4, damaged | Inspect for damage. Repair or install new as necessary. | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Main regulator valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Forward accumulator leaking | Inspect for damage. Repair or install new as necessary. | |
| Forward Clutch and Coast Clutch Assembly | ||
| Seals or pistons damaged | Check pressure at line pressure tap. Carry out Air Pressure Test, refer to Special Testing Procedures . Inspect for damage. Repair or install new as necessary. | |
| Forward clutch return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Ball check valve damaged | Inspect for mislocation, poor seating, damage. Repair or install new as necessary. | |
| Friction elements severely damaged or worn | Check for abnormal wear, damage. Repair or install new as necessary. | |
| Forward/coast/direct clutch cylinder damaged, leaking, misassembled or binding | Inspect for damage. Repair or install new as necessary. | |
| Cylinder to hub weld broken or splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Low One-Way Clutch Assembly | ||
| Worn | Inspect for damage. Repair or install new as necessary. | |
| Damaged | Inspect for damage. Repair or install new as necessary. | |
| Misassembled | Inspect for damage. Repair or install new as necessary. | |
| Forward One-Way Clutch Assembly | ||
| Worn | Inspect for damage. Repair or install new as necessary. | |
| Damaged | Inspect for damage. Repair or install new as necessary. | |
| Misassembled | Inspect for damage. Repair or install new as necessary. | |
| Low Intermediate Carrier | ||
| Damaged | Inspect for damage. Repair or install new as necessary. | |
| Missassembled | Inspect for damage. Repair or install new as necessary. | |
ENGAGEMENT CONCERN: NO REVERSE ONLY
| Possible Component | Reference/Action | |
|---|---|---|
| 202 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, SSA ON, transmission range (TR) sensor | Run On-Board Diagnostics tests. Refer to the Introduction - Gasoline Engines article for diagnosis. Go to Pinpoint Test A and Go to Pinpoint Test D . | |
| 302 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Shift Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Incorrect Pressures | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . If pressure is low, check the following possible components: main control, pump assembly, reverse clutch assembly, low/reverse clutch assembly. | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 1-2 shift valve, SSA, main regulator valve, low/reverse modulator valve, low/reverse accumulator piston, pressure tap plate damaged, missing, stuck, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks/ball plug missing or leaking, plugged hole | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings, No. 6 or No. 7, damaged | Inspect for damage. Repair or install new as necessary. | |
| Reverse Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals, piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Ball check valve damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements worn, severely damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Piston return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Reverse clutch hub to forward/coast/direct hub splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Low/Reverse Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals or piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements worn or severely damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Wave springs missing | Inspect for damage. Repair or install new as necessary. | |
| Piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Forward/Coast/Direct Clutch Cylinder | ||
| Reverse seal rings damaged, missing, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Reverse to low/reverse clutch feeds have severe cross- leakage or porosity | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect for damage. Repair or install new as necessary. | |
| Reverse/Overdrive Gear Set | ||
| Damaged | Inspect for damage. Repair or install new as necessary. | |
ENGAGEMENT CONCERN: HARSH REVERSE OR FORWARD
| Possible Component | Reference/Action | |
|---|---|---|
| 203 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, transmission fluid temperature (TFT) sensor, 3-2 timing/coast clutch solenoid (3-2T/CCS) | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article for diagnosis. Go to Pinpoint Test B and Go to Pinpoint Test E . | |
| 303 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| CV Joints/Front Wheel Driveshaft and Joint | ||
| Splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Powertrain Mounts | ||
| Loose, broken, missing or misaligned | Inspect mounts. Repair or install new as necessary. | |
| Powertrain contacting other vehicle components | Inspect for contact. Repair or install new as necessary. | |
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Shift Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Incorrect Pressures | ||
| Incorrect line pressure | Check pressure at line tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . If high, verify engagements at minimum EPC using the scan tool. If line remains high, check the following component: main control. | |
| Fluid Filter and Seal Assembly | ||
| Filter/seal damaged, plugged | Install new filter and seal assembly. Refer to Transaxle . | |
| Recirculating seal damaged or out of position | Install new recirculating seal. Refer to Transaxle . | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Low/reverse accumulator piston and spring (reverse), main regulator valve, forward accumulator piston and spring misassembled, stuck or damaged | Inspect for damage. Repair or install new as necessary. | |
| EPC solenoid stuck or damaged | Inspect for damage, contamination. Activate solenoid using Transmission Tester or scan tool. Repair or install new as necessary. | |
| Forward Clutch Assembly (Forward Only) | ||
| Forward clutch cylinder damaged | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . | |
| Piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Forward clutch return spring damaged or missing | Inspect for damage. Repair or install new as necessary. | |
| Ball check damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston or seal damaged | Inspect for damage. Repair or install new as necessary. | |
| Reverse Clutch Assembly (Reverse Only) | ||
| Seal or piston damaged | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . | |
| Reverse piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Return spring assembly damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Ball check damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Low/Reverse Clutch Assembly (Reverse Only) | ||
| Seals or reverse clutch piston damaged | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . | |
| Wave spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Return spring assembly damaged, worn or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Direct Clutch Assembly (Reverse Only) | ||
| Friction elements severely damaged | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect for damage. Repair or install new as necessary. | |
ENGAGEMENT CONCERN: DELAYED/SOFT REVERSE OR FORWARD
| Possible Component | Reference/Action | |
|---|---|---|
| 305 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Shift Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Incorrect Pressures | ||
| Low line pressure | Check pressure at line tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . If pressure is low, check the following possible components: main control, pump assembly, clutch assemblies, fluid filter and seal assembly, recirculating seal. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks/ball plug missing or leaking, or passage blockage | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings, No. 3 or No. 4 (Forward), or No. 6 or No. 7 (Reverse), damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump gear/pocket damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plate damaged | Inspect for damage. Repair or install new as necessary. | |
| Fluid Filter and Seal Assembly | ||
| Filter/seal damaged, plugged | Install new filter and seal assembly. Refer to Transaxle . | |
| Recirculating seal damaged or out of position | Install new recirculating seal. Refer to Transaxle . | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Manual valve, main regulator valve, low/reverse modulator valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket leaks, damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Low/Reverse Clutch Assembly (Reverse Only) | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Piston or seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Excessive clutch pack end clearance | Inspect for damage. Repair or install new as necessary. | |
| Reverse Clutch Assembly (Reverse Only) | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals or piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Check ball damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Return spring worn, damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Excessive clutch pack end clearance | Inspect for damage. Repair or install new as necessary. | |
| Forward Clutch Assembly (Forward Only) | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals or piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Ball check damaged, missing or not seating correctly | Inspect for damage, correct seating or missing. Install new cylinder as necessary. | |
| Friction elements damaged, worn or excessive end clearance | Inspect for damage and end clearance. Repair or install new as necessary. | |
| Forward/Coast/Direct Clutch Cylinder Assembly | ||
| Reverse seal ring damaged or missing | Inspect for damage. Repair or install new as necessary. | |
| Cylinder damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
ENGAGEMENT CONCERN: NO FORWARD AND NO REVERSE
| Possible Component | Reference/Action | |
|---|---|---|
| 207 - ELECTRICAL ROUTINE | ||
| No Electrical Concerns | ||
| 307 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Shift Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Incorrect Pressures | ||
| Low or no line pressure | Check pressure at line tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . If pressure is low, check the following possible components: fluid filter and seal assembly, main controls, pump assembly. If OK, proceed to turbine shaft. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks/passage(s) blocked | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal ring missing | Inspect for damage. Repair or install new as necessary. | |
| Pump shaft broken, damaged | Inspect for damage. Repair or install new as necessary. | |
| Fluid Filter and Seal Assembly | ||
| Filter/seal damaged, plugged | Install new filter and seal assembly. Refer to Transaxle . | |
| Recirculating seal damaged or out of position | Install new recirculating seal. Refer to Transaxle . | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pressure plate/gasket damaged or missing | Inspect for damage. Repair or install new as necessary. | |
| Main regulator valve, manual valve stuck, damaged, plugged, missing, link not connected | Inspect for damage. Repair or install new as necessary. | |
| Flexplate (Starter Gear) | ||
| Damaged, broken | Inspect for damage. Repair or install new as necessary. | |
| Torque Converter Assembly | ||
| Pump drive shaft insert damaged | Inspect for damage. Repair or install new as necessary. | |
| Studs broken or damaged | Inspect torque converter. If damaged, Repair or install new as necessary. | |
| Splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Internal blades damaged, broken | Inspect for damage. Repair or install new as necessary. | |
| Turbine Shaft to Forward/Coast/Direct Clutch Cylinder Housing | ||
| Splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Chain and Sprocket Assembly | ||
| Broken, damaged | Inspect for damage. Repair or install new as necessary. | |
| Park Mechanism | ||
| Parking pawl return spring damaged, missing misassembled | Inspect for damage. Repair or install new as necessary. | |
| Front Wheel Drive (FWD) Shafts and Joints | ||
| Broken or splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Final Drive and Differential Assembly | ||
| Splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Gearset damaged | Inspect for damage. Repair or install new as necessary. | |
| Planetary Gearset | ||
| Gear teeth, carriers, splines damaged or broken | Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: SOME OR ALL SHIFTS MISSING
| Possible Component | Reference/Action | |
|---|---|---|
| 210 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, transmission range (TR) sensor, throttle position (TP) sensor, output shaft speed (OSS) sensor, TC switch | Carry out Shift Point Road Test. Refer to Shift Point Road Test in this Section. Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test A and Go to Pinpoint Test D . | |
| 310 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| For diagnosis related to a specific gear use the scan tool to determine gear | Refer to the following shift routine(s) for further diagnosis: | |
| Shift Concern: No 1-2 Shift | Routine 220/320 | |
| Shift Concern: No 2-3 Shift | Routine 221/321 | |
| Shift Concern: No 3-4 Shift | Routine 222/322 | |
SHIFT CONCERNS: SHIFT TIMING - EARLY/LATE
| Possible Component | Reference/Action | |
|---|---|---|
| 211 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, throttle position (TP) sensor, output shaft speed (OSS) sensor, transmission fluid temperature (TFT) sensor | Carry out Shift Point Road Test. Refer to Shift Point Road Test . Run-On Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B . | |
| 311 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Other | ||
| Tire size change | Refer to the specification decal on door panel and verify that vehicle has original equipment. Changes in tire size or speedometer gear will affect shift timing. | |
SHIFT CONCERNS: TIMING - ERRATIC/HUNTING
| Possible Component | Reference/Action | |
|---|---|---|
| 212 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Engine concerns | Refer to ENGINE SYSTEM - GENERAL INFORMATION article to diagnose erratic engine operations. | |
| Electrical inputs/outputs, vehicle harnesses, PCM, shift solenoids, transmission range (TR) sensor, stop lamp switch, TCC solenoid, output shaft speed (OSS) sensor, throttle position (TP) sensor, TSS, EPC, 3-2T/CCS | Carry out Shift Point Test. Refer to Shift Point Road Test in this Section. Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test A , go to Pinpoint Test C , go to Pinpoint Test D , go to Pinpoint Test F and Go to Pinpoint Test G . | |
| 312 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 3-2 timing valve, pull-in valve, 2-4 accumulator, servo release shuttle valve, 3-2 control valve stuck, damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Solenoid screen blocked | Clean or install a new screen. | |
| Separator plates damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket damaged | Inspect for damage. Repair or install new as necessary. | |
| SSA, SSB, 3-2T/CCS solenoid not functioning correctly, stuck, damaged | Activate solenoids using the scan tool. Inspect for damage. Repair or install new as necessary. | |
| Specific Shifts | ||
| Check shift concerns | Refer to the following shift routine(s) for further diagnosis: | |
| Shift Concern: No 1-2 Shift | Routine 220/320 | |
| Shift Concern: No 2-3 Shift | Routine 221/321 | |
| Shift Concern: No 3-4 Shift | Routine 222/322 | |
| Shift Concern: Soft/Slip 1-2 Shift | Routine 226/326 | |
| Shift Concern: Soft/Slip 2-3 Shift | Routine 227/327 | |
| Shift Concern: Soft/Slip 3-4 Shift | Routine 228/328 | |
| Shift Concern: Soft/Slip 4-3 Shift | Routine 229/329 | |
| Shift Concern: Soft/Slip 3-2 Shift | Routine 230/330 | |
| Shift Concern: Soft/Slip 2-1 Shift | Routine 231/331 | |
| Shift Concern: Harsh 1-2 Shift | Routine 232/332 | |
| Shift Concern: Harsh 2-3 Shift | Routine 233/333 | |
| Shift Concern: Harsh 3-4 Shift | Routine 234/334 | |
| Shift Concern: Harsh 4-3 Shift | Routine 235/335 | |
| Shift Concern: Harsh 3-2 Shift | Routine 236/336 | |
SHIFT CONCERNS: FEEL - SOFT/SLIPPING
| Possible Component | Reference/Action | |
|---|---|---|
| 213 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoid, transmission fluid temperature (TFT) sensor, throttle position (TP) sensor, mass air flow (MAF) sensor | Carry out Shift Point Road Test. Refer to Shift Point Road Test . Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B and Go to Pinpoint Test E . | |
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Incorrect Pressures | ||
| Low line pressure | Check pressures at line tap. Carry out Line Pressure Tests. Refer to Special Testing Procedures . If pressures are low or all shifts are soft/slipping, check the following components: main control, pump assembly, fluid filter/seal assembly. If pressures are OK and a specific shift is soft/slipping, refer to the appropriate routine(s) for additional diagnosis. | |
| Soft/Slip 1-2 Shift | Routine 226/326 | |
| Soft/Slip 2-3 Shift | Routine 227/327 | |
| Soft/Slip 3-4 Shift | Routine 228/328 | |
| Soft/Slip 4-3 Shift | Routine 229/329 | |
| Soft/Slip 3-2 Shift | Routine 230/330 | |
| Soft/Slip 2-1 Shift | Routine 231/331 | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect gaskets. Repair or install new as necessary. | |
| Main regulator valve, line modulator valve stuck, damaged or misassembled or springs missing, tangled or damaged | Inspect for damage. Repair or install new as necessary. | |
| EPC solenoid stuck or damaged | Inspect for damage, contamination. Activate solenoid using Transmission Tester or scan tool. Repair or install new as necessary. | |
| Separator plates damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket damaged or missing | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Fluid Filter/Seal Assembly | ||
| Filter/seal damaged, plugged or missing | Install new filter and seal assembly. Refer to Transaxle . | |
| Recirculating seal damaged or out of position | Install new recirculating seal. Refer to Transaxle . | |
SHIFT CONCERNS: FEEL - HARSH
| Possible Component | Reference/Action | |
|---|---|---|
| 214 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, transmission fluid temperature (TFT) sensor, throttle position (TP) sensor, mass air flow (MAF) sensor, torque converter clutch (TCC) solenoid, transmission range (TR) sensor, 3-2T/CCS | Carry out Torque Converter Clutch Operation Test. Refer to Torque Converter Diagnosis . Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C , go to Pinpoint Test D , go to Pinpoint Test E , go to Pinpoint Test F and Go to Pinpoint Test G . | |
| 314 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| CV Joint/Front Wheel Driveshaft and Joints | ||
| Splines damaged, loose | Inspect for damage. Repair or install new as necessary. | |
| Powertrain Mounts | ||
| Damaged, loose, missing | Inspect for damage. Repair or install new as necessary. | |
| Incorrect Pressures | ||
| High line pressure | Check pressure at line tap. Carry out Line Pressure Test and Stall Speed Tests. Refer to Special Testing Procedures . If pressures are high or all shifts are harsh, go to main controls. If pressures are OK and a specific shift is harsh, refer to the appropriate shift routine for additional diagnosis. | |
| Harsh 1-2 Shift | Routine 232/332 | |
| Harsh 2-3 Shift | Routine 233/333 | |
| Harsh 3-4 Shift | Routine 234/334 | |
| Harsh 4-3 Shift | Routine 235/335 | |
| Harsh 3-2 Shift | Routine 236/336 | |
| Harsh 2-1 Shift | Routine 237/337 | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Main regulator valve, bypass valve, line modulator valve stuck, damaged or misassembled. Springs tangled, missing, damaged | Inspect for damage. Repair or install new as necessary. | |
| EPC solenoid stuck or damaged | Inspect for damage, contamination. Activate solenoid using Transmission Tester or scan tool. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plate damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
| Torque Converter Assembly | ||
| Piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal No. 1 (CBY circuit) leaking, missing or damaged | Inspect for damage. Repair or install new as necessary. | |
| Case leaking | Inspect for damage. Repair or install new as necessary. | |
| Converter assembly damaged | If heat stained, install a new converter. | |
SHIFT CONCERNS: NO 1ST GEAR, ENGAGES IN HIGHER GEAR ("D" POSITION)
| Possible Component | Reference/Action | |
|---|---|---|
| 215 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, transmission range (TR) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test A and Go to Pinpoint Test D . | |
| Starts out and holds 3rd gear in the "D" position, reverse engagement is normal | Smart junction box power disconnected. | |
| 315 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pull-in valve, solenoid regulator valve, shift valves stuck, damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Solenoid filter gasket damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| SSA, SSB solenoid not functioning | Activate solenoid using the scan tool. Repair or install new as necessary. | |
| For diagnosis related to a specific gear, use the scan tool to determine gear | Refer to the following routines: | |
| No. 1-2 Shift | Routine 220/320 | |
| No. 2-3 Shift | Routine 221/321 | |
| No. 3-4 Shift | Routine 222/322 | |
| Mechanical | ||
| Seals, clutches damaged, worn | Repair or install new as necessary. | |
| Direct clutch, 2/4 band, 2/4 servo damaged, stuck on | Repair or install new as necessary. | |
SHIFT CONCERNS: NO MANUAL 1ST GEAR (1ST IN "D" IS OK)
| Possible Component | Reference/Action | |
|---|---|---|
| 216 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, transmission range (TR) sensor. | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test A and Go to Pinpoint Test D . | |
| 316 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Main Controls | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pull-in valve stuck, damaged | Inspect for damage. Repair or install new as necessary. | |
| SSB stuck "ON" | Activate solenoid using the scan tool. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: NO 1-2 SHIFT (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 220 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, transmission range (TR) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test A and Go to Pinpoint Test D . | |
| 320 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Incorrect Pressures | ||
| Line pressure | Check pressure at line tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . If not OK, check the following component: main control. | |
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 1-2 shift valve, 2-4 accumulator, main regulator valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| SSA not functioning correctly | Inspect for damage. Activate solenoid using the Transmission Tester or scan tool. | |
| Pressure tap plate/gasket damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate Overdrive Band and Servo Assembly | ||
| Seals damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Band damaged | Inspect for damage. Repair or install new as necessary. | |
| Springs damaged | Inspect for damage. Repair or install new as necessary. | |
| Servo rod or rod bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Low One-Way Clutch Assembly | ||
| Assembly | Inspect for damage. Repair or install new as necessary. | |
| OD/Reverse Sun Gear and Shell | ||
| Damaged, weld broken | Inspect for damage. Repair or install new as necessary. | |
| Lugs damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Low and intermediate band anchor area damaged | Inspect for damage. If damaged, install a new case. | |
| Porosity/leakage in servo apply, servo release circuits | Inspect the case for leakage/porosity. Carry out Air Pressure Tests. Refer to Special Testing Procedures . Install a new case as required. | |
SHIFT CONCERNS: NO 2-3 SHIFT (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 221 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, transmission range (TR) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test A and Go to Pinpoint Test D . | |
| 321 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Incorrect Pressures | ||
| Line pressure | Check pressure at line pressure tap. Carry out Line Pressure Tests. Refer to Special Testing Procedures . If not OK, check the following components: main control. | |
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gasket leaks | Inspect for damage. Repair or install new as necessary. | |
| 2-3 shift valve (also no 4th), main regulator valve stuck, damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| SSB not functioning correctly (also no 4th) | Inspect for damage. Activate solenoid using Transmission Tester or scan tool. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket leaks | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings, No. 4 or No. 5, damaged | Inspect for damage. Repair or install new as necessary. | |
| Direct Clutch Assembly | ||
| Line pressure | Check pressure at line pressure tap. Carry out Line Pressure Tests. Refer to Special Testing Procedures . | |
| Seals or piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction severely damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Ball check not seating correctly | Inspect for damage. Repair or install new as necessary. | |
| Return spring assembly | Inspect for damage. Repair or install new as necessary. | |
| Cylinder bore/splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Shell/hub damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Servo | ||
| Piston or piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Rod bore or rod damaged, leaking | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Leakage in the servo apply, servo release or direct clutch circuits | Inspect case for damage. Repair or install new as necessary. Carry out Air Pressure Tests. Refer to Special Testing Procedures . | |
SHIFT CONCERNS: NO 3-4 SHIFT (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 222 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, transmission range (TR) sensor, transmission control (TC) switch | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test A and Go to Pinpoint Test D . | |
| 322 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Incorrect Pressures | ||
| Line pressure | Check pressure at line tap. Carry out Line Pressure Tests. Refer to Special Testing Procedures . If out of specification, check Main Control. | |
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 3-4 shift valve, main regulator valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| SSA not functioning correctly (also no 1st) | Activate solenoid using the Transmission Tester or scan tool. Repair or install new as necessary. | |
| Separator plates damaged or orifice blocked | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Intermediate overdrive band damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Servo rod or rod bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Servo piston or cover damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Springs damaged | Inspect for damage. Repair or install new as necessary. | |
| Coast Clutch Assembly | ||
| Seals damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction severely damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Check ball severely damaged | Inspect for damage. Repair or install new as necessary. | |
| Forward One-Way Clutch Assembly | ||
| Damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Band anchor damaged | Inspect for damage. If damaged, install a new case. | |
| Servo apply and servo release circuits leaking | Inspect for damage. Repair as required. | |
SHIFT CONCERNS: SOFT/SLIP 1-2 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 226 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoid, transmission fluid temperature (TFT) sensor | Run On-Board Diagnostic Tests. Refer to the Introduction - Gasoline Engines article. Carry out Stall Speed Tests. Refer to Special Testing Procedures . Go to Pinpoint Test B and Go to Pinpoint Test E . | |
| 326 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 2-4 accumulator piston plug and seal (also soft 3-4 shift), main regulator valve, line modulator valve (also soft 3-4 shift) stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Piston out of torque specification | Inspect for damage. Repair or install new as necessary. | |
| Servo rod or rod bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate overdrive band or reverse clutch drum assembly worn, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Springs damaged | Inspect for damage. Repair or install new as necessary. | |
| Servo cover and seal damaged | Inspect for damage. Repair or install new as necessary. | |
| Forward One-Way Clutch Assembly (Slips in 1st) | ||
| Not holding or damaged | Inspect for damage. Repair or install new as necessary. | |
| Forward clutch assembly (slips in 1st) | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . | |
| Seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump support seals No. 3, No. 4 damaged | Inspect for damage. Repair or install new as necessary. | |
| Low One-Way Clutch Assembly | ||
| Not overrunning, damaged | Inspect for damage. Repair or install new as necessary. | |
| Low Reverse Clutch Assembly | ||
| Friction elements severely damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Band anchor damaged | Inspect for damage. If damaged, install a new case. | |
| Porosity/leakage in servo apply, servo release circuits | Inspect the case for leakage/porosity. Carry out Air Pressure Tests. Refer to Special Testing Procedures . Install a new case as necessary. | |
SHIFT CONCERNS: SOFT/SLIP 2-3 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 227 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoid, transmission fluid temperature (TFT) sensor | Run On-Board Diagnostics Tests. Carry out Stall Speed Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B and Go to Pinpoint Test E . | |
| 327 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pump support seals No. 4 or No. 5 damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Line modulator valve (also soft 1-2 and 3-4 shifts), servo release shuttle valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket leaks | Inspect for damage. Repair or install new as necessary. | |
| Direct Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals or piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn or excessive end clearance | Inspect for damage. Check end clearance. Repair or install new as necessary. | |
| Check ball not seating correctly | Inspect for damage. Repair or install new as necessary. | |
| Return spring assembly damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Servo | ||
| Piston or piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Servo rod or rod bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Leakage in the servo apply, servo release or direct clutch circuits | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect for case damage. | |
| Forward One-Way Clutch Assembly | ||
| Not holding, damaged | Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: SOFT/SLIP 3-4 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 228 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoids, transmission fluid temperature (TFT) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B and Go to Pinpoint Test E . | |
| 328 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specifications. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Line modulator valve, 2-4 accumulator valve plug and seal (also soft 1-2 shift), stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket leaks | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged or orifice blocked | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Intermediate overdrive band or reverse clutch drum assembly worn, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Piston, seals or piston bore damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Servo cover or seal damaged | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect for damage. Repair or install new as necessary. | |
| Servo rod or rod bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Springs damaged | Inspect for damage. Repair or install new as necessary. | |
| Direct Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . | |
| Seals damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Check ball damaged, missing or leaking | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Band anchor damaged | Inspect for damage. If damaged, install a new case. | |
| Servo apply and servo release circuits leaking | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: SOFT/SLIP 4-3 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 229 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoid, output shaft speed sensor (OSS), mass air flow (MAF) sensor, throttle position (TP) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test E . | |
| 329 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Servo release shuttle valve, main regulator valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket leaks or damage | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Intermediate overdrive band and reverse clutch drum assembly worn, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Servo return spring broken | Inspect for damage. Repair or install new as necessary. | |
| Servo rod damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston seal damaged | Inspect for damage. Repair or install new as necessary. | |
| Direct Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Check ball damaged, missing or leaking | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged | Inspect for damage. Repair or install new as necessary. | |
| Forward/Coast Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements worn, damaged | Inspect for damage. Repair or install new as necessary. | |
| Check ball not functioning | Inspect for damage. Repair or install new as necessary. | |
| Forward clutch piston and return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Porosity/cross leaks in servo apply, servo release, direct clutch circuits | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: SOFT/SLIP 3-2 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 230 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoid, throttle position (TP) sensor, output shaft speed (OSS) sensor, mass air flow (MAF) sensor, 3-2 timing/coast clutch solenoid (3-2T/CCS) | Run On-Board Diagnostics tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test E and Go to Pinpoint Test G . | |
| 330 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 3-2 timing valve, solenoid regulator valve, 3-2 control valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| 3-2T/CCS solenoid not functioning correctly | Activate solenoid using the scan tool. Repair or install new as necessary. | |
| Pressure tap plate/gasket leaks or damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
| Direct Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Return spring damaged, broken | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Ball check not releasing | Inspect for damage. Repair or install new as necessary. | |
| Piston or seal damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Intermediate overdrive band or reverse clutch drum assembly worn, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Servo piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Servo return and cushion springs damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Springs damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Servo rod bent, damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings No. 4, No. 5, No. 6 damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Forward to direct passage leaks | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Band anchor damaged | Inspect for damage. If damaged, install a new case. | |
| Leakage in servo apply/release circuits | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect for damage. Repair or install new as necessary. | |
| Case bore damaged (servo rod) | Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: SOFT/SLIP 2-1 SHIFT ONLY (AUTOMATIC OR KICKDOWN)
| Possible Component | Reference/Action | |
|---|---|---|
| 231 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoid, transmission fluid temperature (TFT) sensor, throttle position (TP) sensor, mass air flow (MAF) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B and Go to Pinpoint Test E . | |
| 331 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Pump Assembly | ||
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Pump support seals No. 3 or No. 4 leaking, misassembled, damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Servo and Band Assembly | ||
| Servo piston damaged | Inspect for damage. Repair as necessary | |
| Servo piston return spring damaged | Inspect for damage. Repair as necessary | |
| Forward Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Piston or seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged | Inspect for damage. Repair or install new as necessary. | |
| Low One-Way Clutch | ||
| Damaged, not holding | Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: HARSH 1-2 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 232 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoids, transmission fluid temperature (TFT) sensor, TSS, throttle position (TP) sensor, mass air flow (MAF) sensor, TCC solenoid, transmission range (TR) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C , go to Pinpoint Test D , go to Pinpoint Test E and Go to Pinpoint Test F . | |
| 332 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 2-4 accumulator valve, 3-2 control valve (also harsh 3-4 shift) stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings No. 3 or No. 4 damaged | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Cushion return springs damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate overdrive band damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Intermediate overdrive band or reverse clutch drum assembly worn, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Forward Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Band anchor area damaged | Inspect for damage. If damaged, install a new case. | |
SHIFT CONCERNS: HARSH 2-3 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 233 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoid, transmission range (TR) sensor, transmission fluid temperature (TFT) sensor, mass air flow (MAF) sensor, TCC solenoid, turbine shaft speed (TSS) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C , go to Pinpoint Test D , go to Pinpoint Test E and Go to Pinpoint Test F . | |
| 333 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Line modulator valve (also 1-2 and 3-4 harsh shift), servo release shuttle valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings No. 4 or No. 5 damaged | Inspect for damage. Repair or install new as necessary. | |
| Direct Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Piston or piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Ball check not seating correctly | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Clutch cylinder splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Servo | ||
| Servo piston or piston bore damaged | Inspect for damage. Repair or install new as necessary. | |
| Servo rod damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Leakage in the servo apply, servo release or direct clutch circuits | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect case for damage. Repair or install a new case as necessary. | |
| Servo rod bore damaged | Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: HARSH 3-4 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 234 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC Solenoid, 3-2T/CCS, transmission range (TR) sensor, transmission fluid temperature (TFT) sensor, TSS, throttle position (TP) sensor, mass air flow (MAF) sensor, TCC solenoid | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C , go to Pinpoint Test D , go to Pinpoint Test E , go to Pinpoint Test F and Go to Pinpoint Test G . | |
| 334 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Line modulator valve (also 1-2 and 2-3 harsh shift), 3-2 control valve, 2-4 accumulator valve, coast clutch valve, stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Coast clutch Teflon® seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Intermediate overdrive band and reverse clutch drum assembly, damaged, worn, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Servo piston or cover damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Springs damaged | Inspect for damage. Repair or install new as necessary. | |
| Coast Clutch Assembly | ||
| Piston or seals damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Check ball not functioning | Inspect for damage. Repair or install new as necessary. | |
| Direct Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Piston or seals damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Check ball damaged, missing or leaking | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged | Inspect for damage. Repair or install new as necessary. | |
| Clutch cylinder splines damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Band anchor damaged | Inspect for damage. If damaged, install a new case. | |
SHIFT CONCERNS: HARSH 4-3 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 235 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, transmission range (TR) sensor, 3-2T/CCS, transmission fluid temperature (TFT) sensor, OSS, TSS, throttle position (TP) sensor, mass air flow (MAF) sensor, TCC solenoid | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C , go to Pinpoint Test D , go to Pinpoint Test E , go to Pinpoint Test F and Go to Pinpoint Test G . | |
| 335 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Servo release shuttle valve, 3-2 timing/coast valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Porosity/cross leaks, seal rings damaged, missing or leaking ball plug | Inspect for damage. Repair or install new as necessary. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings No. 2, No. 3, No. 4 or No. 5 (coast and direct clutch circuits) damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Servo rod bent, damaged | Inspect for damage. Repair or install new as necessary. | |
| Servo return spring broken | Inspect for damage. Repair or install new as necessary. | |
| Coast Clutch Assembly | ||
| Seals damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements worn, damaged | Inspect for damage. Repair or install new as necessary. | |
| Check ball not functioning | Inspect for damage. Repair or install new as necessary. | |
| Forward clutch piston and return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Porosity/cross leaks in servo apply, servo release, direct clutch, coast clutch circuits | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect for damage. Repair or install new as necessary. | |
SHIFT CONCERNS: HARSH 3-2 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 236 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, electronic pressure control (EPC) solenoid, transmission range (TR) sensor, 3-2T/CCS, transmission fluid temperature (TFT) sensor, OSS, TSS, throttle position (TP) sensor, mass air flow (MAF) sensor, TCC solenoid | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C , go to Pinpoint Test D , go to Pinpoint Test E , go to Pinpoint Test F and Go to Pinpoint Test G . | |
| 336 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 3-2 timing valve, solenoid regulator valve, 3-2 control valve stuck, damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged or blocked | Inspect for damage. Repair or install new as necessary. | |
| 3-2T/CCS solenoid not functioning correctly | Activate solenoid using the scan tool. If coast clutch operation is OK, proceed to direct clutch assembly. | |
| Direct Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Return spring damaged, broken | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Check ball not exhausting | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Intermediate overdrive band or reverse clutch drum assembly damaged, worn or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Servo piston damaged | Inspect for damage. Repair or install new as necessary. | |
| Servo return and cushion springs damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Springs damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Servo rod bent or damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Band anchor damaged | Inspect for damage. If damaged, install a new case. | |
SHIFT CONCERNS: HARSH 2-1 SHIFT ONLY (AUTOMATIC)
| Possible Component | Reference/Action | |
|---|---|---|
| 237 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, EPC solenoids, transmission fluid temperature (TFT) sensor, TSS, throttle position (TP) sensor, mass air flow (MAF) sensor, TCC solenoid, transmission range (TR) sensor | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C , go to Pinpoint Test D , go to Pinpoint Test E and Go to Pinpoint Test F . | |
| 337 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| 2-4 accumulator valve, 3-2 control valve (also harsh 3-4 shift) stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal rings No. 3 or No. 4 damaged | Inspect for damage. Repair or install new as necessary. | |
| Porosity/cross leaks | Inspect for damage. Repair or install new as necessary. | |
| Intermediate/Overdrive Band and Servo Assembly | ||
| Cushion return springs damaged | Inspect for damage. Repair or install new as necessary. | |
| Intermediate overdrive band damaged, worn | Inspect for damage. Repair or install new as necessary. | |
| Intermediate overdrive band or reverse clutch drum assembly worn, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| Forward Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Friction elements damaged | Inspect for damage. Repair or install new as necessary. | |
| Case | ||
| Band anchor area damaged | Inspect for damage. If damaged, install a new case. | |
TORQUE CONVERTER CLUTCH OPERATION CONCERNS: NO APPLY
| Possible Component | Reference/Action | |
|---|---|---|
| 240 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, transmission fluid temperature (TFT) sensor, TCC solenoid, brake pedal position (BPP) switch, OSS, TSS | Carry out Torque Converter Clutch Operation Test. Refer to Torque Converter Diagnosis . Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C , and Go to Pinpoint Test F . | |
| 340 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Solenoid pressure regulator valve, bypass clutch control valve and plunger, converter regulator valve stuck, damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| TCC solenoid not functioning correctly | Activate solenoid using the scan tool. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged or blocked | Inspect for damage. Repair or install new as necessary. | |
| Torque Converter Assembly | ||
| Leakage, internal damage | Inspect for damage and leakage. Carry out Torque Converter Clutch Operation Test. Refer to Torque Converter Diagnosis . | |
TORQUE CONVERTER CLUTCH OPERATION CONCERNS: ALWAYS APPLIED/MAY STALL ENGINE
| Possible Component | Reference/Action | |
|---|---|---|
| 241 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, transmission fluid temperature (TFT) sensor, TCC solenoid | Carry out Torque Converter Clutch Operation Tests. Refer to Torque Converter Diagnosis . Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B and Go to Pinpoint Test C . | |
| 341 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Bypass clutch control valve and plunger (always applied), converter regulator valve stuck, damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Separator plates damaged, blocked | Inspect for damage. Repair or install new as necessary. | |
|
NOTE:
Torque converter clutch not applied in 1st gear or reverse gear. TCC solenoid not functioning correctly. |
Activate solenoid using the scan tool. Repair or install new as necessary. | |
| Pressure tap plate/gasket damaged | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pump support No. 1 seal ring damaged, missing, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Torque Converter Assembly | ||
| Internal seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston plate damaged/stuck to cover | If cover is heat stained, install a new torque converter. | |
| Case | ||
| Porosity/cross leaks from the clutch bypass circuit | Inspect for damage. Repair or install new as necessary. | |
TORQUE CONVERTER CLUTCH CONCERNS: CYCLING SHUDDER CHATTER
| Possible Component | Reference/Action | |
|---|---|---|
| 242 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, TCC solenoid, transmission range (TR) sensor, throttle position (TP) RPM, PCM calibration may not be at current level | Carry out Torque Converter Clutch Operation Tests. Refer to Torque Converter Diagnosis . Clear codes. Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test C . | |
| 342 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| TCC solenoid malfunction | Activate solenoid using the scan tool. Repair or install new as necessary. | |
| Pump Assembly | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Cross leaks | Inspect for porosity leaks, gasket damage, install a new pump as required | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Torque Converter Assembly | ||
| Internal seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston plate damaged/stuck to cover | If cover is heat stained, install a new torque converter. | |
OTHER CONCERNS: SELECTOR LEVER EFFORT IS HIGH
| Possible Component | Reference/Action | |
|---|---|---|
| 251 - ELECTRICAL ROUTINE | ||
| No Electrical Concerns | ||
| 351 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Brake Shift Interlock Solenoid | ||
| Out of adjustment | Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. | |
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Manual control lever damaged, park mechanism damaged, shaft bent, detent lever shaft bore (in case) damaged, detent spring bent/damaged, nut loose | Inspect for damage. Repair as required. | |
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Manual valve stuck, damaged | Inspect for damage. Repair or install new as necessary. | |
OTHER CONCERNS: EXTERNAL LEAKS
| Possible Component | Reference/Action | |
|---|---|---|
| 252 - ELECTRICAL ROUTINE | ||
| No Electrical Concerns | ||
| 352 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . | |
| Seals/Gaskets | ||
| Differential seals, retainer seal, pump assembly, main control cover, servo cover, split flange gasket, converter impeller hub, manual lever shaft seal, fluid level indicator tube | Locate source of leak. Repair as required. If differential seal or converter impeller hub is leaking, inspect drain back holes in case/converter housing, inspect surface front wheel driveshaft and joint for a rough surface. Rough surface may cause seal leakage. Repair or install new as necessary. | |
| Other | ||
| Fluid tube fitting, line pressure tap, pressure port plugs, drain plug, cooler tubes, case porosity, cracked case, cooler bypass valve | Locate source of leak. Repair or install new as necessary. | |
| Vent blocked or damaged | Check vent for damage or blockage. Repair or install new as necessary. | |
| Bolts at split flange or main control cover leaking | Inspect for leaks. Repair or install new as necessary. | |
| Sensors/Connectors | ||
| Transmission connectors, transmission range (TR) sensor. TSS sensor or seal | Locate source of leak. Repair or install new as necessary. | |
OTHER CONCERNS: VEHICLE DRIVEABILITY
| Possible Component | Reference/Action | |
|---|---|---|
| 253 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Base engine concerns | Refer to ENGINE SYSTEM - GENERAL INFORMATION article. | |
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, transmission fluid temperature (TFT) sensor, TCC solenoid, transmission range (TR) sensor, throttle position (TP) sensor | Carry out Torque Converter Clutch Operation Test. Refer Torque Converter Diagnosis . Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C and Go to Pinpoint Test D . | |
| 353 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Verify correct shift points and engagements | Refer to Road Testing Vehicle . | |
| Torque Converter | ||
| Torque converter clutch always applied/may stall engine | Go to Routine 341. | |
| Torque converter one-way clutch | Inspect torque converter. Repair or install new as necessary. | |
| Damaged | Inspect torque converter. Repair or install new as necessary. | |
NOTE:
Noise, vibration and harness (NVH) symptoms should be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, refer to NOISE, VIBRATION AND HARSHNESS
article. Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system. If this is not the causal system for the symptom, refer back to NOISE, VIBRATION AND HARSHNESS
article for the next likely system and continue diagnose.
OTHER CONCERNS: NOISE/VIBRATION - FORWARD/REVERSE
| Possible Component | Reference/Action | |
|---|---|---|
| 254 - ELECTRICAL ROUTINES | ||
| No Electrical Concerns | ||
| 354 - HYDRAULIC/MECHANICAL ROUTINES | ||
| For Noises/Vibrations That Change With Engine Speed | ||
| Torque converter components | Locate source of disturbance. Repair or install new as necessary. | |
| Fluid level (low) pump cavitation | Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Pump assembly | Refer to Pump Assembly . | |
| Engine drive accessories | Refer to ENGINE - 2.3L article or ENGINE - 3.0L (4V) article. | |
| Cooler tubes grounding out | Refer to TRANSAXLE/TRANSMISSION COOLING - CD4E article. | |
| Flexplate | Refer to ENGINE - 2.3L article or ENGINE - 3.0L (4V) article. | |
| For Noises That Change With Vehicle Speed | ||
| Powertrain mounts loose, damaged | Locate source of disturbance. Repair or install new as necessary. | |
| Tires | Refer to SUSPENSION SYSTEM - GENERAL INFORMATION article. | |
| Driveline concerns: front wheel driveshaft and joint or differential: final drive/chain, suspension, modifications | Refer to SUSPENSION SYSTEM - GENERAL INFORMATION article. | |
| Planetary gear sets | Refer to Planetary Gearsets And Chain Drive Parts . | |
| Chain grounding to chain pan | Inspect chain pan for signs of damage or wrong installation. Repair or install new as necessary. | |
| Forward one-way clutch | Refer to Forward One-Way Clutch - Sprag Type or Low One-Way Clutch - Mechanical Diode Type . | |
| Torque converter assembly | Refer to Torque Converter . | |
| Hydraulic pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Other Noises/Vibrations | ||
| Speedometer cable or gears | Locate source of disturbance. Repair or install new as necessary. | |
| Selector lever cable and bracket vibration, grounding out | Locate source of disturbance. Repair or install new as necessary. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article or AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - HYBRID article. | |
| Loose exhaust pipe or heat shield | Locate source of disturbance. Repair or install new as necessary. Refer to EXHAUST SYSTEM article. | |
| Loose flexplate-to-converter nuts | Adjust bolts to specification. | |
OTHER CONCERNS: ENGINE WILL NOT CRANK
| Possible Component | Reference/Action | |
|---|---|---|
| 255 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Base engine concerns | Refer to the Introduction - Gasoline Engines article. | |
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, transmission range (TR) sensor damaged, misadjusted | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test D . | |
| 355 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Starter/Flexplate | ||
| Damaged or misassembled | Inspect for damage, misassembly. Repair or install new as necessary. | |
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
OTHER CONCERNS: NO PARK RANGE
| Possible Component | Reference/Action | |
|---|---|---|
| 256 - ELECTRICAL ROUTINE | ||
| No Electrical Concerns | ||
| 356 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Park Mechanism | ||
| Park gear on driven sprocket assembly, parking pawl return spring, park pawl ratchet springs, parking pawl shaft, manual control lever, cam apply lever, manual lever detent spring, transmission range (TR) sensor, parking pawl apply cam, manual shaft nut damaged, missing or misassembled | Inspect for damage. Repair or install new as necessary. | |
OTHER CONCERNS: TRANSAXLE OVERHEATING
| Possible Component | Reference/Action | |
|---|---|---|
| 257 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, TCC solenoid, transmission fluid temperature (TFT) sensor, OSS, TSS | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test B , go to Pinpoint Test C and Go to Pinpoint Test F . | |
| 357 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Vehicle Overheating | ||
| Engine overheating | Refer to ENGINE COOLING article. | |
| Fluid | ||
| Incorrect Fluid Level | Fill fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Inspect fluid condition. Refer to Preliminary Inspection . If fluid is aerated, check thermal valve and filter seals. Repair or install new as necessary. | |
| Cooler Tubes | ||
| Damaged, blocked, reversed | Inspect for damage. Repair or install new as necessary. | |
| AC Condenser Combo Cooler | ||
| Damaged, blocked, restricted or leaking | Inspect for damage or incorrect installation. Repair or install new as necessary. Refer to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article or CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS - HYBRID article. | |
| Main Control | ||
| Bolts out of torque specification | Adjust bolts to specification. | |
| Main regulator valve, bypass clutch control valve, converter regulator valve stuck, damaged, misassembled | Inspect for damage. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plates/gaskets damaged | Inspect for damage. Repair or install new as necessary. | |
| Torque Converter Clutch | ||
| TCC solenoid not functioning correctly (off) | Activate solenoid using the scan tool. Repair or install new as necessary. | |
| No Apply | Go to Routine 240/340. | |
| Pump Assembly | ||
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Rear lube passage blocked | Inspect for damage. Repair or install new as necessary. | |
| Chain Pan | ||
| Missing | Inspect for missing pan. Install pan if missing. | |
| Thermostatic Fluid Level Control Valve | ||
| Stuck open or damaged | Inspect for damage. Repair or install new as necessary. | |
| Gasket damaged or missing | Inspect for damage. Repair or install new as necessary. | |
| Bolt or bracket damaged, missing, or incorrect installed | Inspect for damage. Repair or install new as necessary. | |
| Case/Converter Housing/Stator Support | ||
| Front lube passage blocked or restricted | Check pressure at line pressure tap. Carry out Line Pressure Test, refer to Special Testing Procedures . Inspect passages. | |
OTHER CONCERNS: NO ENGINE BRAKING IN MANUAL 1ST POSITION
| Possible Component | Reference/Action | |
|---|---|---|
| 258 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, 3-2 timing/coast clutch solenoid | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test G . | |
| 358 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Main Controls | ||
| Bolts out of specification | Adjust bolts to specification. | |
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Low/reverse modulator valve, coast clutch valve stuck, damaged or misassembled | Inspect for damage. Repair or install new as necessary. | |
| 3-2 timing/coast clutch solenoid stuck or damaged | Inspect for damage, contamination. Activate solenoid using the Transmission Tester or scan tool. Repair or install new as necessary. | |
| Hydraulic passages damaged | Inspect for damage. Repair or install new as necessary. | |
| Pressure tap plate/gasket damaged | Inspect for damage. Repair or install new as necessary. | |
| Separator plate/gasket damaged | Inspect for damage. Repair or install new as necessary. | |
| Coast Clutch Assembly | ||
| Assembly misassembled, damaged | Inspect for damage. Repair or install new as necessary. | |
| Forward clutch hub seal damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston or seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Check ball damaged, missing | Inspect for damage. Repair or install new as necessary. | |
| Low/Reverse Clutch Assembly | ||
| Low line pressure | Check pressure at line pressure tap. Carry out Line Pressure and Stall Speed Tests. Refer to Special Testing Procedures . | |
| Assembly misassembled, damaged | Inspect for damage. Repair or install new as necessary. | |
| Piston or seals damaged | Inspect for damage. Repair or install new as necessary. | |
| Pump Assembly | ||
| Pump support No. 2 or No. 3 seal rings for the coast clutch circuit damaged, missing | Inspect for damage. Repair or install new as necessary. | |
OTHER CONCERNS: NO ENGINE BRAKING IN DRIVE (TC SWITCH ON) OR MANUAL 2ND POSITION
| Possible Component | Reference/Action | |
|---|---|---|
| 259 - ELECTRICAL ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, vehicle wiring harnesses, PCM, 3-2 timing/coast clutch solenoid | Run On-Board Diagnostics Tests. Refer to the Introduction - Gasoline Engines article. Go to Pinpoint Test G . Carry out Stall Speed Tests. Refer to Special Testing Procedures in this section. | |
| 359 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Pump Assembly | ||
| Pump support No. 2 or No. 3 seal rings for the coast clutch circuit damaged, missing | Inspect for damage. Repair or install new as necessary. | |
OTHER CONCERNS: VEHICLE MOVEMENT WITH GEAR SELECTOR IN THE "N" POSITION
| Possible Component | Reference/Action | |
|---|---|---|
| 262 - ELECTRICAL ROUTINE | ||
| No Electrical Concerns | ||
| 362 - HYDRAULIC/MECHANICAL ROUTINE | ||
| Selector Lever Linkage | ||
| Damaged, out of adjustment | Inspect and repair as required. Verify the selector lever linkage adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - CD4E article. After adjusting the selector lever linkage, verify that the transmission range (TR) sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Internal Selector Lever Linkages | ||
| Damaged, disconnected | Inspect and service as required. After inspecting the selector lever linkage, verify that the TR sensor is correctly adjusted. Refer to Transmission Range (TR) Sensor Adjustment . | |
| Pump Assembly | ||
| Gaskets damaged or leaking | Inspect for damage. Repair or install new as necessary. | |
| Pump support seal ring No. 2, leakage from lube circuit into forward clutch circuit | Inspect for damage. Repair or install new as necessary. | |
| Forward/Coast Clutch Assembly | ||
| Friction plates severely damaged | Inspect for damage. Repair or install new as necessary. | |
| Return spring damaged | Inspect for damage. Repair or install new as necessary. | |
| Check ball damaged, missing | Inspect for damage. Repair or install new as necessary. | |