Diagnostic Routines
WARNING: This page is about a different car, the 2008 Lincoln Navigator L and 2008 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
ENGAGEMENT CONCERNS: NO FORWARD IN D
| Possible Component | Reference/Action | |
|---|---|---|
| 201 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Shift Linkage | ||
| Shift linkage - damage or incorrectly adjusted | Inspect and repair as required. Verify transmission selector lever cable adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust transmission selector lever cable as necessary. | |
| Mechatronics | ||
| Defective manual valve | Inspect connection to shift linkage. | |
| Defective forward clutch (A) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSA (VFS-1) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Forward clutch (A) friction and steel plate - failure | Inspect the forward clutch assembly for damage. Repair as required. Refer to Forward Clutch Assembly . | |
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Low/reverse clutch (D) friction and steel plate - failure | Inspect the low/reverse clutch assembly for damage. Repair as required. Refer to Low/Reverse Clutch Assembly . | |
| Pump | ||
| Pump gear - failure | Install a new pump assembly. Refer to Pump Assembly . | |
ENGAGEMENT CONCERNS: NO REVERSE
| Possible Component | Reference/Action | |
|---|---|---|
| 202 - ROUTINE | ||
| Fluid Level | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Shift Linkage | ||
| Shift linkage - damage or incorrectly adjusted | Inspect and repair as required. Verify transmission selector lever cable adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust transmission selector cable as necessary. | |
| Mechatronics | ||
| Defective direct clutch (B) or low/reverse clutch (D) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Pump | ||
| Pump gear - failure | Install a new pump assembly. Refer to Pump Assembly . | |
ENGAGEMENT CONCERNS: HARSH REVERSE
| Possible Component | Reference/Action | |
|---|---|---|
| 203 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Driveline | ||
| Engine driveline looseness in the driveshaft, U-joints or the engine mounts | Repair as required. | |
ENGAGEMENT CONCERNS: HARSH FORWARD ONLY
| Possible Component | Reference/Action | |
|---|---|---|
| 204 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Mechatronics | ||
| Defective forward clutch (A) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective forward clutch (A) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSA (VFS-1) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Transmission control module (TCM) mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Driveline | ||
| Engine driveline looseness in the driveshaft, U-joints or the engine mounts | Repair as required. | |
ENGAGEMENT CONCERNS: DELAYED/SOFT REVERSE ONLY
| Possible Component | Reference/Action | |
|---|---|---|
| 205 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
ENGAGEMENT CONCERNS: DELAYED/SOFT FORWARD ONLY
| Possible Component | Reference/Action | |
|---|---|---|
| 206 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Mechatronics | ||
| Defective forward clutch (A) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSA (VFS-1) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
ENGAGEMENT CONCERNS: NO FORWARD AND NO REVERSE
| Possible Component | Reference/Action | |
|---|---|---|
| 207 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Mechatronics | ||
| Defective manual valve | Inspect connection to shift linkage. | |
| Pump | ||
| Pump gear - failure | Install a new pump assembly. Refer to Pump Assembly . | |
ENGAGEMENT CONCERNS: HARSH FORWARD AND HARSH REVERSE
| Possible Component | Reference/Action | |
|---|---|---|
| 208 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses, solenoids, transmission range (TR) sensor, SSA solenoid, PCA solenoid | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Multiple shifts missing (more than one gear) | If some shifts are missing, determine which shifts do not occur. Refer to CLUTCH APPLICATION CHART . Monitor appropriate PIDs as listed in diagnostics. Refer to routine 210. | |
| Mechatronics | ||
| Gears 4-6 default to 5th gear and gears 1-3 default to 3rd gear | Retrieve DTCs. | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
ENGAGEMENT CONCERNS: DELAYED FORWARD AND DELAYED REVERSE
| Possible Component | Reference/Action | |
|---|---|---|
| 209 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Mechatronics | ||
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
SHIFT CONCERNS: SOME/ALL SHIFTS MISSING
| Possible Component | Reference/Action | |
|---|---|---|
| 210 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Shift Linkage Damaged or Incorrectly Adjusted | ||
| External selector lever cable | Inspect and repair as required. Verify transmission selector lever cable adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust transmission selector lever cable as necessary. | |
| Forward Clutch (A) Assembly (No Shifts) | ||
| Seals, piston - damaged | Inspect for damage. Repair as required. | |
| Friction elements - damaged or worn | Inspect for damage. Repair as required. | |
| Return springs - damaged | Inspect for damage. Repair as required. | |
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses, solenoids, TR sensor, SSA solenoid, PCA solenoid | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Multiple shift missing (more than one gear) | If some shifts are missing, determine which shifts do not occur. Refer to CLUTCH APPLICATION CHART . Monitor appropriate PIDs as listed in diagnostics. | |
SHIFT CONCERNS: TIMING - EARLY/LATE
| Possible Component | Reference/Action | |
|---|---|---|
| 211 - ROUTINE | ||
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Engine driveability concerns | Refer to ENGINE SYSTEM - GENERAL INFORMATION article. | |
| Mechatronics | ||
| Bolts not tightened to specification | Tighten to specification. | |
| Mechatronic unit contaminated, solenoid(s) damaged, stuck or bore damaged. Manual valve damaged, stuck or bore damaged | Inspect for damage. If damaged, install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Incorrect Pressures | ||
| Application pressures are incorrect | Incorrect application pressures may be due to non-transmission components, mechatronic assembly or internal transmission damage. Repair all non-transmission components then continue with this routine. | |
| Other | ||
| Tire size change, axle ratio change | Verify that the vehicle has the original equipment. Refer to the certification label. Changes in tire size and axle ratio will affect shift timing. | |
SHIFT CONCERNS: TIMING - ERRATIC/HUNTING (SOME/ALL)
| Possible Component | Reference/Action | |
|---|---|---|
| 212 - ROUTINE | ||
| Fluid | ||
| Incorrect level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Condition | Carry out the fluid level check in Preliminary Inspection . | |
| Fluid over temperature condition | Refer to transmission overheating. | |
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Torque Converter Concerns | ||
| Torque converter clutch | Refer to torque converter clutch operation concern: cycling shutter chatter. | |
SHIFT CONCERNS: FEEL - SOFT OR SLIPPING (SOME OR ALL)
| Possible Component | Reference/Action | |
|---|---|---|
| 213 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Transmission Fluid Temperature (TFT) Sensor Damaged | ||
| Mechatronic assembly | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Bolts not tightened to specification | Tighten to specification. | |
| Mechatronic unit contaminated, solenoid(s) damaged, stuck or bore damaged. Manual valve damaged, stick or bore damaged | Inspect for damage. If damaged, install a new mechatronic assembly. Refer to Main Control Valve Body . | |
SHIFT CONCERNS: FEEL - HARSH (SOME/ALL)
| Possible Component | Reference/Action | |
|---|---|---|
| 214 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Re-flash mechatronic assembly to the latest level calibration. Carry out road test - adaptive drive cycle, refer to Shift Point Road Test . Road test and carry out on-board diagnostic test again. | |
SHIFT CONCERNS: NO 1ST GEAR IN DRIVE, ENGAGES IN A HIGHER GEAR
| Possible Component | Reference/Action | |
|---|---|---|
| 215 - ROUTINE | ||
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Incorrect Gear | ||
| Mechatronic failure | Determine which gear the transmission is in. Refer to the CLUTCH APPLICATION CHART . | |
SHIFT CONCERNS: NO 1ST GEAR MANUAL
| Possible Component | Reference/Action | |
|---|---|---|
| 216 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Shift Linkage | ||
| External selector lever cable system - damaged, misaligned | Inspect and repair as necessary. | |
| Mechatronics | ||
| Defective SSA (VFS-1) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Clutch Plates | ||
| Forward clutch (A) friction and steel plate - failure | Inspect the forward clutch assembly for damage. Repair as required. Refer to Forward Clutch Assembly . | |
| Low/reverse clutch (D) friction and steel plate - failure | Inspect the low/reverse clutch assembly for damage. Repair as required. Refer to Low/Reverse Clutch Assembly . | |
| Pump | ||
| Pump gear - failure | Install a new pump assembly. Refer to Pump Assembly . | |
SHIFT CONCERNS: NO 2ND GEAR MANUAL
| Possible Component | Reference/Action | |
|---|---|---|
| 217 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Shift Linkage | ||
| External selector lever cable system - damaged, misaligned | Inspect and repair as necessary. | |
| Mechatronics | ||
| Defective SSA (VFS-1) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Clutch Plates | ||
| Forward clutch (A) friction and steel plate - failure | Inspect the forward clutch assembly for damage. Repair as required. Refer to Forward Clutch Assembly . | |
| Low/reverse clutch (D) friction and steel plate - failure | Inspect the low/reverse clutch assembly for damage. Repair as required. Refer to Low/Reverse Clutch Assembly . | |
| Pump | ||
| Pump gear - failure | Install a new pump assembly. Refer to Pump Assembly . | |
SHIFT CONCERNS: NO 3RD GEAR MANUAL
| Possible Component | Reference/Action | |
|---|---|---|
| 218 - ROUTINE | ||
| Shift Linkage | ||
| External selector lever cable system - damaged, misaligned | Inspect and repair as necessary. | |
| Mechatronics | ||
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Powertrain Control System | ||
| PCM electrical inputs/outputs, TCM, external vehicle wiring harnesses | Carry out on-board diagnostic tests. Repair as required. Clear DTCs. Road test and carry out on-board diagnostic test again. | |
| Clutch Plates | ||
| Forward clutch (A) friction and steel plate - failure | Inspect the forward clutch assembly for damage. Repair as required. Refer to Forward Clutch Assembly . | |
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Low/reverse clutch (D) friction and steel plate - failure. | Inspect the low/reverse clutch assembly for damage. Repair as required. Refer to Low/Reverse Clutch Assembly . | |
| Pump | ||
| Pump gear - failure | Install a new pump assembly. Refer to Pump Assembly . | |
SHIFT CONCERNS: NO 1-2 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 220 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective intermediate clutch (C) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSC (VFS-3) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Defective SSD (VFS-4) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Intermediate clutch (C) friction and steel plate - failure | Inspect the intermediate clutch assembly for damage. Repair as required. Refer to Intermediate Clutch Assembly . | |
| Low/reverse clutch (D) friction and steel plate - failure | Inspect the low/reverse clutch assembly for damage. Repair as required. Refer to Low/Reverse Clutch Assembly . | |
SHIFT CONCERNS: NO 2-3 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 221 - ROUTINE | ||
| Fluid | ||
| Incorrect fluid level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid filter and seal assembly - plugged, damaged | Install a new filter assembly. | |
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective intermediate clutch (C) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Defective SSC (VFS-3) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Intermediate clutch (C) friction and steel plate - failure | Inspect the intermediate clutch assembly for damage. Repair as required. Refer to Intermediate Clutch Assembly . | |
SHIFT CONCERNS: NO 3-4 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 222 - ROUTINE | ||
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective intermediate clutch (E) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective solenoid multiplex valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Defective SSD (VFS-4) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Defective SSE (SS-1) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Overdrive clutch (E) friction and steel plate - failure | Inspect the overdrive clutch assembly for damage. Repair as required. Refer to Overdrive Clutch Assembly . | |
SHIFT CONCERNS: NO 4-5 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 270 - ROUTINE | ||
| Mechatronics | ||
| Defective forward clutch (A) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective forward clutch (A) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSA (VFS-1) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Forward clutch (A) friction and steel plate - failure | Inspect the forward clutch assembly for damage. Repair as required. Refer to Forward Clutch Assembly . | |
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
SHIFT CONCERNS: NO 5-6 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 272 - ROUTINE | ||
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective intermediate clutch (C) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Defective SSC (VFS-3) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Intermediate clutch (C) friction and steel plate - failure | Inspect the overdrive clutch assembly for damage. Repair as required. Refer to Intermediate Clutch Assembly . | |
SHIFT CONCERNS: NO 6-5 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 273 - ROUTINE | ||
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective intermediate clutch (C) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSC (VFS-3) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Intermediate clutch (C) friction and steel plate - failure | Inspect the overdrive clutch assembly for damage. Repair as required. Refer to Intermediate Clutch Assembly . | |
SHIFT CONCERNS: NO 5-4 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 271 - ROUTINE | ||
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective forward clutch (A) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Forward clutch (A) friction and steel plate - failure | Inspect the forward clutch assembly for damage. Repair as required. Refer to Forward Clutch Assembly . | |
SHIFT CONCERNS: NO 4-3 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 223 - ROUTINE | ||
| Mechatronics | ||
| Defective overdrive clutch (E) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective overdrive clutch (E) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Solenoid multiplex valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Drive enable valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Defective SSD (VFS-4) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Overdrive clutch (E) friction and steel plate - failure | Inspect the overdrive clutch assembly for damage. Repair as required. Refer to Overdrive Clutch Assembly . | |
SHIFT CONCERNS: NO 3-2 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 224 - ROUTINE | ||
| Mechatronics | ||
| Defective direct clutch (B) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective direct clutch (B) latch valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective intermediate clutch (C) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSB (VFS-2) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Defective SSC (VFS-3) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (B) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Intermediate clutch (C) friction and steel plate - failure | Inspect the overdrive clutch assembly for damage. Repair as required. Refer to Intermediate Clutch Assembly . | |
SHIFT CONCERNS: NO 2-1 SHIFT
| Possible Component | Reference/Action | |
|---|---|---|
| 225 - ROUTINE | ||
| Mechatronics | ||
| Defective intermediate clutch (C) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective low/reverse clutch (D) regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective SSC (VFS-3) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| TCM mechatronic unit - failed | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Electronic component - failure | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Clutch Plates | ||
| Direct clutch (C) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Direct Clutch Assembly . | |
| Low/reverse clutch (D) friction and steel plate - failure | Inspect the direct clutch assembly for damage. Repair as required. Refer to Low/Reverse Clutch Assembly . | |
TORQUE CONVERTER CLUTCH OPERATION CONCERNS: DOES NOT APPLY
| Possible Component | Reference/Action | |
|---|---|---|
| 240 - ROUTINE | ||
| Fluid | ||
| Fluid condition | Carry out the fluid level check in Preliminary Inspection . | |
| Mechatronics | ||
| Defective torque converter apply regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective torque converter release regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective TCC (VFS-6) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Mechatronic assembly bolts - not tightened to specification | Tighten to specification. | |
| Mechatronic unit contaminated, solenoid(s) damaged, stuck or bore damaged. Manual valve damaged, stuck or bore damaged | Inspect for damage. If damaged, install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Powertrain Control Module | ||
| Powertrain control system electrical inputs/outputs, TCM, vehicle wiring harnesses, torque converter clutch (TCC) solenoid, transmission fluid temperature (TFT) sensor | Carry out on-board diagnostic tests. Repair as required. Clear DTCs, road test and carry out on-board diagnostic test again. | |
| Torque Converter | ||
| Torque converter components | Remove the transmission. Inspect for damage. install a new or remanufactured torque converter. Refer to Transmission - Four Wheel Drive (4WD) or Transmission - Rear Wheel Drive (RWD) . | |
TORQUE CONVERTER CLUTCH OPERATION CONCERNS: CYCLING/CHATTER
| Possible Component | Reference/Action | |
|---|---|---|
| 241 - ROUTINE | ||
| Fluid | ||
| Fluid condition | Carry out the fluid level check in Preliminary Inspection . | |
| Mechatronics | ||
| Defective torque converter apply regulator valve | Inspect mechatronic assembly for stuck valves or contamination. Refer to Main Control Valve Body . | |
| Defective TCC (VFS-6) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Mechatronic assembly bolts - not tightened to specification | Tighten to specification. | |
| Mechatronic unit contaminated, solenoid(s) damaged, stuck or bore damaged. Manual valve damaged, stuck or bore damaged | Inspect for damage. If damaged, install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Powertrain Control Module | ||
| Powertrain control system electrical inputs/outputs, TCM, vehicle wiring harnesses, TCC solenoid, TFT sensor | Carry out on-board diagnostic tests. Repair as required. Clear DTCs, road test and carry out on-board diagnostic test again. | |
| Torque Converter | ||
| Torque converter components | Remove the transmission. Inspect for damage. Install a new or remanufactured torque converter. Refer to Transmission - Four Wheel Drive (4WD) or Transmission - Rear Wheel Drive (RWD) . | |
TORQUE CONVERTER CLUTCH OPERATION CONCERNS: ALWAYS APPLIED/STALLS VEHICLE
| Possible Component | Reference/Action | |
|---|---|---|
| 242 - ROUTINE | ||
| Fluid | ||
| Fluid condition | Carry out the fluid level check in Preliminary Inspection . | |
| Mechatronics | ||
| Defective TCC (VFS-6) shift solenoid | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Mechatronic assembly bolts - not tightened to specification | Tighten to specification. | |
| Mechatronic unit contaminated, solenoid(s) damaged, stuck or bore damaged. Manual valve damaged, stuck or bore damaged | Inspect for damage. If damaged, install a new mechatronic assembly. Refer to Main Control Valve Body . | |
| Powertrain Control Module | ||
| Powertrain control system electrical inputs/outputs, TCM, vehicle wiring harnesses, TCC solenoid, TFT sensor | Carry out on-board diagnostic tests. Repair as required. Clear DTCs, road test and carry out on-board diagnostic test again. | |
| Torque Converter | ||
| Torque converter components | Remove the transmission. Inspect for damage. install a new or remanufactured torque converter. Refer to Transmission - Four Wheel Drive (4WD) or Transmission - Rear Wheel Drive (RWD) . | |
OTHER CONCERNS: EXTERNAL LEAKS
| Possible Component | Reference/Action | |
|---|---|---|
| 252 - ROUTINE | ||
| Fluid | ||
| Incorrect level | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Transmission case vent - damaged, case porosity | Inspect for damage. If damaged, repair as necessary. | |
| Leakage at gaskets, seals, bulkhead connector | Refer to Leakage Inspection , Fluid Leakage in the Torque Converter Area and Transmission Leak Check Test Procedures for potential leak locations. Remove all traces of lubricant on exposed surface of the transmission. Repair as necessary. | |
| Fluid Cooler Tubes | ||
| Cooler tube fittings | Locate leak source. Repair as required. Refer to TRANSAXLE/TRANSMISSION COOLING article. | |
| Cooler tube O-rings, cooler tubes | Locate leak source. Repair as required. Refer to TRANSAXLE/TRANSMISSION COOLING article. | |
| Fluid Pump | ||
| Fluid pump O-ring | Install a new O-ring. Refer to Pump Assembly . | |
| Fluid pump seal ring | Install a new seal ring. Refer to Pump Assembly . | |
| Transmission Case | ||
| Case - leaking | Install a new transmission case. Refer to Transmission . | |
| Transmission electrical bulkhead connector | Install a new transmission electrical bulkhead connector O-ring. | |
| Fluid fill plug | Install a new fill plug. | |
| Output shaft seal | Install a new seal. Refer to Output Shaft Seal . | |
| Manual control lever seal | Install a new seal. | |
| Transmission fluid pan seal (gasket) | Install a new seal. | |
| Torque Converter | ||
| Torque converter studs | Install a new torque converter. | |
| Torque converter hub seal | Install a new torque converter hub seal. | |
| Torque converter weld | Install a new torque converter. | |
NOTE:
Noise, vibration and harshness (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 diagnosis.
NOISE/VIBRATION IN FORWARD OR REVERSE
| Possible Component | Reference/Action | |
|---|---|---|
| 254 - ROUTINE | ||
| Torque Converter | ||
| Check the torque converter components/balance weight | Locate source of disturbance. Repair as required. | |
| Fluid | ||
| Fluid level (low) pump cavitation. | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Engine Driveline | ||
| Engine drive accessories | Refer to ENGINE SYSTEM - GENERAL INFORMATION article. | |
| Fluid Cooler Tubes | ||
| Cooler line grounding out | Adjust or reposition cooler tubes. | |
NOISE/VIBRATION THAT CHANGES WITH VEHICLE SPEED
| Possible Component | Reference/Action | |
|---|---|---|
| 255 - ROUTINE | ||
| Engine Driveline | ||
| Engine mounts - loose or damaged | Locate source of disturbance. Repair as required. | |
Driveline concerns:
|
Inspect and repair as required. | |
First gear:
|
||
Second gear:
|
||
Third gear:
|
||
Fourth gear:
|
||
Fifth gear:
|
||
Sixth gear:
|
||
Reverse gear:
|
||
| Other Noise/ Vibrations | ||
| Main control valve resonance | Locate source of disturbance. Repair as required. | |
| Output shaft splines - worn or damaged | Install a new output shaft seal. Refer to Output Shaft Seal . | |
Selector lever cable:
|
Inspect and repair as required. | |
Cooler lines:
|
Inspect and repair as required. | |
ENGINE WILL NOT CRANK
| Possible Component | Reference/Action | |
|---|---|---|
| 257 - ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, TCM, vehicle wiring harnesses, engine starting system, TR sensor | Carry out on-board diagnostic tests. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of engine components. Check PIDs for TR park and neutral positions. Repair as required. Clear DTCs, road test and carry out on-board diagnostic test again | |
| Vehicle Starter | ||
| Starter system concerns | Inspect and repair as necessary. Refer to STARTING SYSTEM article. | |
| External Selector Lever Cable System | ||
| Cable system - damaged, misaligned | Inspect and repair as necessary. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. | |
| TR Sensor Assembly | ||
| TR Assembly - damaged | Inspect and repair as necessary. | |
| Torque Converter | ||
| Flexplate - damaged | Inspect for damage. Repair as necessary. | |
| Fluid Pump Assembly | ||
| Internal parts seized | Inspect for damage. Repair as necessary. | |
NO PARK RANGE
| Possible Component | Reference/Action | |
|---|---|---|
| 258 - ROUTINE | ||
| Selector Lever Cable | ||
| Cable system - damaged, misaligned | Inspect and repair as necessary. | |
| Manual control lever assembly damaged, manual valve inner lever pin bent, manual valve inner lever damaged, spring rod damaged, park pawl pin loose or damaged, park rod actuating plate loose, damaged or missing | Inspect for damage. If damaged, repair as necessary. | |
| Transmission case assembly | Inspect for damage. If damaged, repair as necessary. | |
| Park gear, parking pawl, parking pawl return spring, part or guide, parking actuating rod, parking pawl shaft, manual lever | Inspect for damage. If damaged, repair as necessary. | |
| External linkages/brackets - damaged | Inspect for damage. If damaged, repair as necessary. | |
| TR Assembly Damaged, Manual Lever Detent Spring Damaged | ||
| TR assembly | Install a new mechatronic assembly. Refer to Main Control Valve Body . | |
TRANSMISSION OVERHEATING
| Possible Component | Reference/Action | |
|---|---|---|
| 259 - ROUTINE | ||
| Powertrain Control System | ||
| Electrical inputs/outputs, TCM, vehicle wiring harnesses, TCC solenoid | Carry out on-board diagnostic tests. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of engine components. Check PIDs for TR park and neutral positions. Repair as required. Clear DTCs, road test and carry out on-board diagnostic test again. | |
| Fluid | ||
| Incorrect level | Check fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Fluid condition | Carry out the fluid level check. Refer to Preliminary Inspection . | |
| Case Vent Damaged | ||
| Transmission case assembly | Inspect for damage. If damaged, repair as necessary. | |
| Torque Converter Clutch Not Engaging | ||
| Torque converter | Install a new torque converter. | |
| Other | ||
| Restriction in transmission cooling system | Check transmission cooling system efficiency. Refer to TRANSAXLE/TRANSMISSION COOLING article for automatic transmission cooling system diagnostic procedures. | |
| Excessive trailer tow load | Refer to the Owner's Literature for specifications on trailer towing. | |
| Vehicle heat shield - missing or damaged | Inspect for damage. If damaged, repair as necessary. | |
| Vehicle airflow is restricted | Inspect for damage. If damaged, repair as necessary. | |
FLUID VENTING/FOAMING
| Possible Component | Reference/Action | |
|---|---|---|
| 260 - ROUTINE | ||
| Incorrect Level | ||
| Fluid | Check the fluid level. Adjust fluid to correct level. Refer to Preliminary Inspection . | |
| Case Vent Damaged | ||
| Transmission case assembly | Inspect for damage. If damaged, repair as necessary. | |