Diagnostic Routines

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. 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
	No Electrical Concerns
301 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust fluid to correct level. Refer to Preliminary Inspection .
	Condition	Inspect as under Transmission Fluid Condition Check .
Selector Lever Linkage
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify the Transmission Range (TR) sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Low forward clutch pressure, low line pressure	Carry out Line Pressure Test. Refer to Special Testing Procedures . If pressures are low, check the following components: transmission fluid filter and seal assembly, main controls, pump assembly, forward clutch assembly.
Transmission Fluid Filter and Seal Assembly
	Plugged, damaged	Inspect for damage, install a new transmission fluid filter and seal assembly as required. Refer to Fluid Pan, Gasket and Filter .
	Filter seal damaged
Main Controls
	3-4 shift valve, main regulator valve, manual valve - stuck, damaged	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Gaskets damaged	Inspect gaskets for damage and install a new gasket.
	2-3 accumulator and seals damaged	Inspect piston, seals and bore for damage. Repair as required.
	Pressure regulator valve	Inspect the diameter for wear.
Pump Assembly
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Porosity/cross leaks/ball missing or leaking, plugged hole	Inspect for porosity and leaks. Repair as required.
	No. 3 and No. 4 seal rings damaged	Inspect seals for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Forward Clutch Assembly
	Seals, piston damaged	Inspect seals for damage. Repair as required.
	Check balls damaged, missing, mislocated, not seating correctly	Inspect for mislocation, poor seating, damage. Install a new cylinder as required.
	Friction elements damaged or worn	Check for abnormal wear, damage. Repair as required.
One-Way Clutch (OWC) Assembly (Planetary)
	Worn, damaged or assembled incorrectly	Inspect for damage. Repair as required.
Output Shaft
	Damaged	Inspect for damage. Install new components as required.

ENGAGEMENT CONCERN: NO REVERSE

Possible Component		Reference/Action
202 - ELECTRICAL ROUTINE
	No Electrical Concerns
302 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Shift Linkage
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the Transmission Range (TR) sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Low reverse clutch pressure, low reverse band pressure, low line pressure	Check pressure at line pressure tap; refer to LINE PRESSURE CHART for specifications. If pressures are low, check the following components: oil filter and seal assembly, main controls, reverse servo, pump assembly, reverse clutch assembly.
Fluid Filter and Seal Assembly
	Plugged, damaged	Install a new transmission oil filter and seal assembly.
Main Controls
	No. 6 shuttle ball, manual valve, main regulator valve, 1-2 accumulator seals stuck or damaged	Inspect for damage. Repair as required.
	Loose bolts	Tighten bolts to specifications.
	Gasket damaged	Inspect for damage and install a new gasket.
Low/Reverse Servo
	Seals (piston and cover) damaged	Inspect for damage. Repair as required.
	Servo cover retaining ring damaged
	Anchor pins (case) damaged
Pump Assembly
	Loose bolts	Tighten bolts to specifications.
	Porosity/cross leaks/ball missing or leaking, plugged hole	Inspect pump assembly. Install new as required.
	Gasket damaged	Inspect for damage and install a new gasket.
	No. 1 and 2 seal rings damaged	Inspect for damage. Repair as required.
Reverse Clutch Assembly
	Seals, piston damaged	Inspect for damage. Repair as required.
	Check ball missing or damaged
	Friction elements damaged or worn
Low/Reverse Band
	Band, servo, anchor pins damaged or worn	Inspect for damage. Repair as required.

ENGAGEMENT CONCERN: HARSH REVERSE

Possible Component		Reference/Action
203 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, Transmission Fluid Temperature (TFT) sensor, Electronic Pressure Control (EPC) solenoid	Carry out self-test; refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Carry out engagement test, EPC test and Go to Pinpoint Test B or Go to Pinpoint Test D . Check idle speed. Repair as required. Clear the DTCs, road test and repeat self-test.
303 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Engine Driveline
	Looseness in the driveshaft, U-joints or the engine mounts	Repair as required.
Shift Linkage
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the Transmission Range (TR) sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	High line pressure, high EPC pressure	Check pressure at line and EPC pressure taps; refer to LINE PRESSURE CHART for specifications. If high, check the following components: main controls, transmission oil filter and seal assembly.
Fluid Filter and Seal Assembly
	Plugged or damaged	Install a new transmission oil filter and seal assembly.
	Filter seal damaged
Main Controls
	No. 6 shuttle ball, No. 5 check ball, manual valve, main regulator valve stuck, damaged or missing	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Gasket damaged	Inspect for damage and install a new gasket.
	EPC solenoid stuck or damaged	Inspect for damage, contamination. Carry out EPC test in Routine No. 203. Repair as required.
Low Reverse Servo
	Seals (piston and cover) damaged	Inspect for damage. Repair as required.
	Servo cover retaining ring assembled incorrectly
	Anchor pins (case) damaged
Pump Assembly
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Porosity/cross leaks	Inspect pump assembly. Install new as required.
	Gasket damaged	Inspect for damage and install a new gasket.
	No. 1 and No. 2 seal rings damaged	Inspect for damage. Repair as required.
Reverse Clutch Assembly
	Seals, piston damaged	Inspect for damage. Repair as required.
	Check ball missing or damaged
	Friction elements damaged, worn
	Return spring piston damaged, worn
Low Reverse Band
	Band, servo, anchor pin damaged or worn	Inspect for damage. Repair as required.

ENGAGEMENT CONCERN: HARSH FORWARD

Possible Component		Reference/Action
204 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, Transmission Fluid Temperature (TFT) sensor, Electronic Pressure Control (EPC) solenoid	Carry out self-test; refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Carry out engagement test and EPC test. Go to Pinpoint Test B or Go to Pinpoint Test D . Check idle speed. Repair as required. Clear the DTCs, road test and repeat self-test.
304 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Engine Driveline
	Looseness in the driveshaft, U-joints or the engine mounts	Repair as required.
Incorrect Pressures
	High forward clutch pressure, high line pressure, high EPC pressure	Check pressure at line, EPC and forward pressure taps. Refer to LINE PRESSURE CHART for specifications. If pressures are high, check the following possible components: main controls, pump assembly.
Main Controls
	Main regulator valve stuck, damaged	Inspect and repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Gaskets damaged	Inspect for damage and install a new gasket.
	EPC solenoid stuck or damaged	Inspect for damage or contamination. Carry out EPC test in Routine 204. Repair as required.
Case
	2-3 accumulator seal/retainer stuck, damaged	Inspect for damage. Repair as required.
Pump Assembly
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Porosity/cross leaks	Inspect for porosity/leaks. Install a new pump as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Forward Clutch Assembly
	Check balls missing or damaged	Inspect for mislocation, poor seating, damage. Install a new forward clutch cylinder.
	Friction element damaged or worn	Inspect for damage. Repair as required.
	Forward clutch wave spring damaged	Inspect for damage. Repair as required.
	Forward clutch return spring damaged	Inspect for damage. Repair as required.

ENGAGEMENT CONCERN: DELAYED/SOFT REVERSE

Possible Component		Reference/Action
205 - ELECTRICAL ROUTINE
		No electrical concerns.
305 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Shift Linkage
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the Transmission Range (TR) sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Low reverse clutch pressure, low reverse band pressure, low line pressure	Check pressure at line tap; refer to LINE PRESSURE CHART for specifications. If pressures are low, check the following components: main controls, pump assembly, reverse clutch assembly, reverse servo.
Fluid Filter and Seal Assembly
	Plugged, damaged	Install a new transmission oil filter and seal assembly.
		Filter seal damaged.
Main Controls
	No. 6 shuttle ball, manual valve, main regulator valve stuck or damaged	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Gaskets damaged	Inspect for damage and install a new gasket.
Case
	1-2 accumulator seals stuck or damaged	Inspect for damage. Repair as required.
Low Reverse Servo
	Seals (piston and cover) damaged	Inspect for damage. Repair as required.
	Servo cover retaining ring assembled incorrectly
Pump Assembly
	Bolts not tightened to specification	Tighten bolts to specification.
	Porosity/cross leaks/ball missing or leaking	Inspect pump assembly. Install new as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
	No. 1 and No. 2 seal rings damaged	Inspect for damage. Repair as required.
Reverse Clutch Assembly
	Seals, piston damaged	Inspect for damage. Install new components as required.
	Check ball missing or damaged
	Friction elements damaged, worn
	Return spring and piston damaged, worn
Low Reverse Band
	Damaged, worn	Inspect for damage. Repair as required.

ENGAGEMENT CONCERN: DELAYED/SOFT FORWARD

Possible Component		Reference/Action
206 - ELECTRICAL ROUTINE
		No electrical concerns.
306 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Shift Linkage
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the Transmission Range (TR) sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Low forward clutch pressure, low line pressure, low Electronic Pressure Control (EPC) pressure	Check pressure at line, forward clutch and EPC taps; refer to LINE PRESSURE CHART for specifications. If pressures are low, check the following components: transmission oil filter and seal assembly, main controls and pump assembly.
Fluid Filter and Seal Assembly
	Plugged, damaged	Install a new transmission oil filter and seal assembly.
	Filter seal damaged
Main Controls
	3-4 shift valve, main regulator valve stuck or damaged	Inspect and repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Gaskets damaged	Inspect for damage and repair as required.
Case
	2-3 or 1-2 accumulator, bore damaged or stuck	Inspect for damage. Repair as required.
Pump Assembly
	Bolts not tightened to specification	Tighten bolts to specifications.
	Porosity/cross leaks	Inspect pump assembly. Repair as required.
	Gaskets damaged	Inspect for damage. Repair as required.
	No. 3 and No. 4 seal rings damaged	Inspect for damage. Repair as required.
Forward Clutch Assembly
	Seals, piston damaged	Inspect for damage. Repair as required.
	Check balls missing, damaged	Inspect for mislocation, poor seating, damage. Install a new cylinder as required.
	Friction elements damaged, worn	Check for damage. Repair as required.

SHIFT CONCERNS: SOME/ALL SHIFTS MISSING

Possible Component		Reference/Action
210 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Output Shaft Speed (OSS) sensor, Transmission Range (TR) sensor	Carry out self-test; refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A , go to Pinpoint Test C or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
310 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Shift Linkage, TR Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
		Refer to the following shift routine(s) for further diagnosis: Shift 1-2, Routine 220/320 Shift 2-3, Routine 221/321 Shift 3-4, Routine 222/322 Shift 4-3, Routine 223/323 Shift 3-2, Routine 224/324 Shift 2-1, Routine 225/325

SHIFT CONCERNS: TIMING CONCERNS - EARLY/LATE

Possible Component		Reference/Action
211 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Electronic Pressure Control (EPC) solenoid, Transmission Fluid Temperature (TFT) sensor, Output Shaft Speed (OSS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A , go to Pinpoint Test C or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
311 - HYDRAULIC/MECHANICAL ROUTINE
Other
	Tire size change, axle ratio change	Verify vehicle has original equipment. Refer to Certification Label and Safety Standard Certification Label. Changes in tire size or axle ratio will affect shift timing.
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Powertrain Control System
	Engine driveability concerns	Refer to Routine 253.
Incorrect Pressures
	Line pressure, EPC pressure	Check pressure at line and EPC taps; refer to LINE PRESSURE CHART for specifications. If not OK, check the main controls. If OK, refer to the shift routine(s) for further diagnosis: Shift 1-2, Routine 320 Shift 2-3, Routine 321 Shift 3-4, Routine 322 Shift 4-3, Routine 323 Shift 3-2, Routine 324 Shift 2-1, Routine 325
Main Controls
	EPC solenoid, stuck or damaged hydraulically or mechanically	Inspect for damage, contamination. Carry out EPC tests in Routine No. 211. Repair as required.
	Valves, accumulators, seals stuck or damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
	Solenoid screen blocked or damaged	Clean or install a new screen.

SHIFT CONCERNS: TIMING CONCERNS - ERRATIC/HUNTING

Possible Component		Reference/Action
212 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Torque Converter Clutch (TCC) solenoid, Transmission Range (TR) sensor, Output Shaft Speed (OSS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis. Go to Pinpoint Test A , go to Pinpoint Test C or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
	Poor engine performance	Refer to Routine 253.
312 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Main Controls
	Valves, accumulators, seals, assembled wrong, stuck or damaged	Inspect for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
	Solenoid screen blocked or damaged	Clean or install a new screen.
TCC
	Torque converter	Refer to Torque Converter Operation Concerns: Cycling/Shudder/Chatter Hydraulic/Mechanical Routine 342. Refer to Diagnosis By Symptom .
Specific Shifts
		Refer to the following shift routine(s) for further diagnosis: Shift 1-2, Routine 320 Shift 2-3, Routine 321 Shift 3-4, Routine 322 Shift 4-3, Routine 323 Shift 3-2, Routine 324 Shift 2-1, Routine 325

SHIFT CONCERNS: FEEL - SOFT/SLIPPING

Possible Component		Reference/Action
213 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, Electronic Pressure Control (EPC) solenoid, Output Shaft Speed (OSS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test D or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
	Engine driveability concerns	Refer to Routine 253.
313 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Incorrect Pressures
	Low line pressure, low EPC pressure	Check pressures at line and EPC taps; refer to LINE PRESSURE CHART for specifications. If pressures are low or all shifts are soft/slipping, go to main controls. If pressures are OK and a specific shift is soft/slipping, refer to the following routine(s) for further diagnosis: Shift 1-2, Routine 320 Shift 2-3, Routine 321 Shift 3-4, Routine 322 Shift 4-3, Routine 323 Shift 3-2, Routine 324 Shift 2-1, Routine 325
Main Controls
	Main regulator valve, Overdrive (O/D) servo regulator valve stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	EPC solenoid stuck or damaged	Inspect for damage and contamination. Carry out EPC tests in Routine 213. Repair as required.
Case
	1-2 accumulator stuck or damaged	Inspect for damage. Repair as required.
Filter and Seal Assembly
	Filter plugged, damaged	Inspect for damage. Install a new transmission oil filter as required.
	Seal damaged or cut	Inspect for damage. Replace as required.

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, Output Shaft Speed (OSS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test D or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
	Engine driveability concerns	Refer to Routine 253.
314 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Incorrect Pressures
	High line pressure, high EPC pressure	Check pressures at line and EPC taps. See the LINE PRESSURE CHART for specifications. 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 following shift routine(s) for further diagnosis: Shift 1-2, Routine 320 Shift 2-3, Routine 321 Shift 3-4, Routine 322 Shift 4-3, Routine 323 Shift 3-2, Routine 324 Shift 2-1, Routine 325
Main Controls
	Main regulator valve, Overdrive (O/D) servo regulator valve stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	EPC solenoid stuck or damaged	Inspect for damage or contamination. Carry out EPC tests in Routine 214. Repair as required.

SHIFT CONCERNS: NO 1ST GEAR, ENGAGES IN HIGHER GEAR

Possible Component		Reference/Action
215 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Transmission Range (TR) sensor	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A or Go to Pinpoint Test C . Repair as required. Clear the DTCs, road test and repeat self-test.
315 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, TR Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Low reverse clutch pressure, low reverse band pressure, low line pressure Forward Off, Intermediate Off, Direct X Forward Off, Intermediate X, Direct Off Forward Off, Intermediate X, Direct X Forward X, Intermediate Off, Direct X Forward X, Intermediate X, Direct Off Forward X, Intermediate X, Direct X Forward X, Intermediate Off, Direct Off	Check for which pressures are on and refer to Band/Clutch Application Chart 601 and corresponding routines. 324, 301 325, 301 323, 324, 325, 301 324 325 323, 324, 325 Refer to appropriate mechanical diagnosis.
Mechanical
	Bands, clutches or seals damaged or worn	Refer to Transmission DISASSEMBLY and ASSEMBLY .
X = pressure applied

SHIFT CONCERNS: NO MANUAL 1ST GEAR

Possible Component		Reference/Action
216 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Transmission Range (TR) sensor	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A or Go to Pinpoint Test C . Repair as required. Clear the DTCs, road test and repeat self-test.
316 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Cable, TR Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Low reverse clutch pressure, low reverse band pressure, low line pressure, low Electronic Pressure Control (EPC) pressure	Check pressure at line and EPC pressure taps; refer to LINE PRESSURE CHART for specifications. If pressures are low, check the following components: transmission oil filter and seal assembly, main controls, reverse clutch assembly and reverse servo assembly.
Fluid Filter and Seal Assembly
	Plugged or damaged	Install a new transmission oil filter and seal assembly.
Main Controls
	No. 6 shuttle ball, manual valve, main regulator valve, low servo modulator valve stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Gaskets damaged	Inspect for damage and install a new gasket.
Low Reverse Servo
	Seals (piston and cover) damaged	Inspect for damage. Repair as required.
		Servo cover retaining ring assembled incorrectly.
		Anchor pins (case) damaged.

SHIFT CONCERNS: NO MANUAL 2ND GEAR

Possible Component		Reference/Action
217 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Transmission Range (TR) sensor	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A or Go to Pinpoint Test C . Repair as required. Clear the DTCs, road test and repeat self-test.
317 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Cable, TR Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Main Controls
	3-4 shift valve, 1-2 and 2-3 shift valve, 3-4 capacity modulator valve stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Gaskets damaged	Inspect for damage and install a new gasket.

SHIFT CONCERNS: 1-2 SHIFT (AUTOMATIC)

Possible Component		Reference/Action
220 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Output Shaft Speed (OSS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
	Poor engine performance	Refer to Routine 253.
320 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Transmission Range (TR) Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Intermediate clutch pressure, line pressure	Check pressure at line and intermediate clutch taps; see the LINE PRESSURE CHART for specifications. If not OK, check the main controls.
Main Controls
	1-2 shift valve, stuck or damaged	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specification.
	Shift Solenoid A (SSA) malfunction	Activate SSA using scan tool. If SSA operation cannot be felt when placing hand on SSA, install a new solenoid. Inspect O-rings for damage. Repair as required.
	Gasket damaged	Inspect for damage and install a new gasket.
	No. 8 ball not seating	Inspect for damage. Repair as required.
Case
	1-2 accumulator stuck or damaged	Inspect for damage. Repair as required.
Pump
	Porosity/cross leaks, balls missing, damaged or leaking	Inspect for porosity/leaks, balls missing. Install a new pump as required.
	Gasket damaged	Inspect for damage and install a new gasket.
Intermediate Clutch Assembly
	Seals damaged	Inspect for damage. Repair as required.
	Piston damaged	Inspect for damage. Repair as required.
	Friction elements damaged or worn	Inspect for damage. Repair as required.
Intermediate One-Way Clutch (OWC) Assembly
	Not holding or damaged	Inspect for damage. Repair as required.
Planetary OWC Assembly
	Not overrunning or damaged	Inspect for damage. Repair as required.
1-2 Accumulator
	Damaged accumulator piston	Inspect for damage. Repair as required.
	Springs damaged or broken	Inspect for damage. Repair as required.
	Case bore scored	Inspect for damage. Repair as required.

SHIFT CONCERNS: 2-3 SHIFT (AUTOMATIC)

Possible Component		Reference/Action
221 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Output Shaft Speed (OSS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
	Engine driveability concerns	Refer to Routine 253.
321 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the Transmission Range (TR) sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Direct clutch pressure	Check pressure at direct clutch tap; refer to LINE PRESSURE CHART for specifications. If not OK, check the main controls.
Main Controls
	2-3 shift valve, check ball No. 9 or No. 3, solenoid pressure regulator valve, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Shift Solenoid B (SSB) malfunction	Activate SSB using scan tool. If SSB operation cannot be felt when placing hand on SSB, install a new SSB. Inspect O-rings for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
	Output shaft seals damaged or cup plug leaking or missing	Inspect for damage and repair as required.
	2-3 accumulator damaged or stuck	Inspect piston seal and bore for damage. Repair as required.
	Solenoid screen (in main control) blocked or damaged	Clean or install a new screen.
Intermediate One-Way Clutch (OWC) Assembly
	Not overrunning or damaged	Inspect for damage. Repair as required.
Output Shaft
	Seal rings damaged	Inspect for damage. Repair as required.
	Cup plug damaged or missing
Direct Clutch Assembly
	Seals or piston damaged	Inspect for damage. Repair as required.
	Friction elements worn or damaged	Inspect for damage. Repair as required.
	Check ball not seating	Inspect for damage. Repair as required.
	Return spring assembly damaged	Inspect for damage. Repair as required.
Case
	Output shaft rear seals leaking or damaged	Inspect for damage. Repair as required. Inspect case for damaged seal area. If damaged, install a new case.
2-3 Accumulator
	Damaged accumulator piston	Inspect for damage. Repair as required.
	Springs damaged or broken	Inspect for damage. Repair as required.
	Case bore scored	Inspect for damage. Repair as required.

SHIFT CONCERNS: 3-4 SHIFT (AUTOMATIC)

Possible Component		Reference/Action
222 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Output Shaft Speed (OSS), Transmission Control Switch (TCS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
	Engine driveability concerns	Refer to Routine 253.
322 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Transmission Range (TR) Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Forward clutch pressure, direct clutch pressure, line pressure	Check line, direct and forward clutch pressures at appropriate taps; refer to LINE PRESSURE CHART for specifications. If pressures are out of specification, check main controls.
Main Controls
	3-4 shift valve, solenoid pressure regulator valve, Overdrive (O/D) servo regulator, 3-4 capacity modulator valve, 1-2 and 2-3 shift valves stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Shift Solenoid A (SSA) or Shift Solenoid B (SSB) malfunction	Activate SSA/SSB using scan tool. If SSA/SSB operation cannot be felt when placing hand on SSA/SSB, install a new SSA orSSB solenoid. Inspect O-rings for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
	O/D servo rod and piston cushion spring or seals damaged	Inspect for damage. Repair as required.
	Worn or damaged O/D servo anchor pins	Inspect for damage. Repair as required.
	No. 2, No. 4, No. 7 and No. 9 check balls damaged or missing	Inspect for damage. Repair as required.
	Solenoid screen blocked or damaged	Clean or install a new screen.
Pump
	Porosity/cross leaks, balls missing, damaged or leaking	Inspect for porosity/leaks, balls missing. Install a new pump as required.
	Gaskets damaged	Inspect for damage. Install new gaskets as required.
O/D Band
	O/D band and reverse clutch drum assembly damaged, worn or assembled incorrectly	Inspect for damage. Repair as required.
	Intermediate One-Way Clutch (OWC) assembly damaged	Inspect for damage. Repair as required.
Forward Clutch Assembly
	Seals or piston damaged	Inspect for damage. Repair as required.
	Friction elements worn or damaged	Inspect for damage. Repair as required.
	Check ball stuck, damaged or not seating correctly	Inspect for damage. Repair as required.
Input Shaft
	Seals damaged	Inspect for damage. Repair as required.

SHIFT CONCERNS: 4-3 SHIFT (AUTOMATIC)

Possible Component		Reference/Action
223 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, Transmission Control Switch (TCS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A . Repair as required. Clear the DTCs, road test and repeat self-test.
323 - HYDRAULIC/MECHANICAL ROUTINE
Incorrect Pressures
	Forward clutch pressure, line pressure	Check line and forward clutch at pressure taps; refer to LINE PRESSURE CHART for specifications. If out of specification, check the main controls.
Main Controls
	3-4 shift valve, solenoid pressure regulator valve, Overdrive (O/D) servo regulator, 3-4 capacity modulator, 1-2 and 2-3 shift valves stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Check balls No. 2, No. 7, No. 9 damaged, missing or not seating correctly	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specification.
	Shift Solenoid A (SSA) malfunction	Activate SSA using scan tool. If SSA operation cannot be felt when placing hand on SSA, install a new SSA solenoid. Inspect O-rings for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
	O/D servo, seal, rod damaged	Inspect for damage. Repair as required.
	Solenoid screen blocked or damaged	Clean or install a new screen.
Pump
	Porosity/cross leaks, balls missing, damaged or leaking	Inspect for porosity/leaks, balls missing. Install a new pump as required.
	Seal rings damaged	Inspect for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
O/D Band
	O/D band and reverse clutch assembly damaged, worn or assembled incorrectly	Inspect for damage. Repair as required.
	Intermediate One-Way Clutch (OWC) assembly damaged	Inspect for damage. Repair as required.
Forward Clutch Assembly
	Seals or piston damaged	Inspect for damage. Repair as required.
	Friction elements damaged, worn	Inspect for damage. Repair as required.
	Check ball stuck, damaged or not seating correctly	Inspect for damage. Repair as required.
	Forward clutch piston and return spring damaged	Inspect for damage. Repair as required.
Input Shaft
	Seals damaged	Inspect for damage. Repair as required.

SHIFT CONCERNS: 3-2 SHIFT (AUTOMATIC)

Possible Component		Reference/Action
224 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A . Repair as required. Clear the DTCs, road test and repeat self-test.
324 - HYDRAULIC/MECHANICAL ROUTINE
Incorrect Pressures
	Direct clutch	Check pressure at direct clutch tap; refer to LINE PRESSURE CHART for specifications. If not within specification, check the main controls.
Main Controls
	2-3 shift valve stuck or damaged	Inspect for damage. Repair as required.
	Check balls damaged or missing	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Shift Solenoid B (SSB) malfunction	Activate SSB using scan tool. If SSB operation cannot be felt when placing hand on SSB, install a new SSB solenoid. Inspect O-rings for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Intermediate One-Way Clutch (OWC)
	Not holding or damaged	Inspect for damage. Repair as required.
	Intermediate OWC retaining snap ring not seated	Inspect for damage. Repair as required.
Direct Clutch Assembly
	Seals or piston damaged	Inspect for damage. Repair as required.
	Friction element damaged, worn	Inspect for damage. Repair as required.
	Check ball stuck, damaged or not seating correctly	Inspect for damage. Repair as required.

SHIFT CONCERNS: 2-1 SHIFT (AUTOMATIC)

Possible Component		Reference/Action
225 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A . Repair as required. Clear the DTCs, road test and repeat self-test.
325 - HYDRAULIC/MECHANICAL ROUTINE
Incorrect Pressures
	Intermediate clutch	Check pressure at intermediate clutch tap; refer to LINE PRESSURE CHART for specifications. If not within specifications, check main controls and pump.
Main Controls
	1-2 shift valve, 1-2 accumulator solenoid pressure regulator valve stuck, damaged or assembled wrong	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Shift Solenoid A (SSA) malfunction	Activate SSA using scan tool. If SSA operation cannot be felt when placing hand on SSA, install a new SSA solenoid. Inspect O-rings for damage. Install new as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Pump
	Gaskets damaged	Inspect for damage and install a new gasket.
	Porosity/cross leaks	Inspect for leak/porosity. Install a new pump as required.
Intermediate Clutch Assembly
	Piston damaged	Inspect for damage. Repair as required.
	Friction elements damaged, worn	Inspect for damage. Repair as required.
	End clearance incorrect	Inspect and correct; refer to Transmission Assembly.
Intermediate One-Way Clutch (OWC)
	Damaged	Inspect for damage. Repair as required.
	Intermediate OWC retaining snap ring not seated	Inspect for damage. Repair as required.
Planetary OWC
	Not holding or damaged	Inspect for damage. Repair as required.

TORQUE CONVERTER CLUTCH (TCC) OPERATION CONCERNS: NO APPLY

Possible Component		Reference/Action
240 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, Torque Converter Clutch (TCC) solenoid, Transmission Fluid Temperature (TFT) sensor, Output Shaft Speed (OSS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test B or Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
340 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the Transmission Range (TR) sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Incorrect Pressures
	Low line pressure, low Electronic Pressure Control (EPC) pressure	Check pressure at line and EPC taps; refer to LINE PRESSURE CHART for specifications. If pressure is low, check EPC and main regulator valve. If within specifications, check the main controls.
Main Controls
	Solenoid pressure regulator valve, manual valve, bypass clutch control valve and plunger, converter pressure limit valve, drain back valve stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Solenoid screen blocked or damaged	Clean or install a new screen.
	TCC solenoid malfunction	Activate TCC solenoid using scan tool. If TCC solenoid operation cannot be felt when placing hand on TCC solenoid, install a new TCC solenoid. Inspect O-rings for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Torque Converter Assembly
	Leakage, friction material damaged, internal seals damaged	Inspect torque converter. Repair or install a new or remanufactured torque converter as required.
Pump Assembly
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Porosity/cross leaks, balls leaking	Inspect for porosity/leaks, ball missing. Install a new pump as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Input Shaft
	Seals damaged	Inspect for damage. Repair as necessary.

TORQUE CONVERTER CLUTCH (TCC) OPERATION CONCERNS: ALWAYS APPLIED/STALLS VEHICLE

Possible Component		Reference/Action
241 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, Torque Converter Clutch (TCC) solenoid, Transmission Fluid Temperature (TFT) sensor	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test B or Go to Pinpoint Test A . Repair as required. Clear the DTCs, road test and repeat self-test.
341 - HYDRAULIC/MECHANICAL ROUTINE
Main Control
	Drain back valve, TCC and plunger stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	TCC solenoid malfunction	Activate TCC solenoid using scan tool. If TCC solenoid operation cannot be felt when placing hand on TCC solenoid, install a new TCC solenoid. Inspect O-rings for damage. Repair as required.
	No. 7 ball incorrect seating	Inspect for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Torque Converter Assembly
	No end clearance	Inspect converter and install a new or remanufactured torque converter as required.
	Piston plate damaged or stuck to cover	If cover is heat-stained, install a new converter and determine the cause of the overheat condition.
Pump Assembly
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Ball missing, leaking, porosity/cross leaks	Inspect for porosity/leaks, balls missing. Install a new pump as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Input Shaft
	Seals damaged	Inspect for damage. Repair as required.

TORQUE CONVERTER CLUTCH (TCC) OPERATION CONCERNS: CYCLING/SHUDDER/CHATTER

Possible Component		Reference/Action
242 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, PCM, Torque Converter Clutch (TCC) solenoid, Output Shaft Speed (OSS)	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test E . Repair as required. Clear the DTCs, road test and repeat self-test.
	Speed control equipped vehicles	Evaluate with speed control off.
342 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Condition	Inspect transmission fluid condition. If burnt, drain transmission fluid and converter. Install new transmission fluid and transmission oil filter. Bring vehicle to normal operating temperature. Carry out Transmission Drive Cycle Test. Carry out Transmission Self-Test. If condition still exists, continue diagnostics.
Main Controls
	Solenoid pressure regulator valve, No. 7 check ball, bypass clutch control valve and plunger, converter pressure limit valve stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.
	Solenoid screen blocked or damaged	Clean or install a new screen.
	TCC solenoid malfunction	Activate TCC solenoid using scan tool. If TCC solenoid operation cannot be felt when placing hand on TCC solenoid, install a new TCC solenoid. Inspect O-rings for damage. Repair as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Torque Converter
	Excessive end clearance	Inspect converter. Install a new or remanufactured torque converter as required.
Pump Assembly
	Bolts not tightened to specification	Tighten bolts to specification.
	Porosity/cross leaks, missing balls or leaking	Inspect for porosity/leaks or missing balls. Install a new pump as required.
	Gaskets damaged	Inspect for damage and install a new gasket.
Input Shaft
	Seals damaged	Inspect for damage. Repair as required.

OTHER CONCERNS: NO ENGINE BRAKING IN MANUAL 2ND OR MANUAL 1ST POSITION

Possible Component		Reference/Action
250 - ELECTRICAL ROUTINE
		No electrical concerns.
350 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the Transmission Range (TR) sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Main Controls
	3-4 shift valve, 1-2 and 2-3 shift valve, gaskets, 3-4 capacity modulator valve, stuck or damaged or assembled incorrectly	Inspect for damage. Repair as required.
	Overdrive (O/D) servo assembly damaged or stuck in manual 2nd only.	Inspect cover, piston and seal for damage. Repair as required.
	Low/Reverse servo assembly damaged or stuck in manual 1st only	Inspect cover, piston and seal for damage. Repair as required.
O/D
	Reverse band, manual 1st (only) damaged	Inspect for damage. Repair as required.
	O/D band, reverse clutch drum assembly worn or damaged (manual 2nd only)	Inspect for damage. Repair as required.
Reverse Band (Manual 1st Only)
	Damaged or incorrectly adjusted	Inspect for damage. Repair as required.

OTHER CONCERNS: SELECTOR LEVER EFFORTS HIGH

Possible Component		Reference/Action
251 - ELECTRICAL ROUTINE
		No electrical concerns.
351 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Transmission Range (TR) Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
	Brake Shift Interlock Actuator (BSIA) system, solenoid damaged	Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article.
Manual Lever
	Retaining pin damaged, nut loose, detent spring bent or damaged or park mechanism damaged	Inspect for damage. Repair as required.
Main Controls
	Manual valve stuck or damaged	Inspect for damage. Repair as required.
	Bolts not tightened to specifications	Tighten bolts to specifications.

OTHER CONCERNS: EXTERNAL LEAKS

Possible Component		Reference/Action
252 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, sensor seals leaking Transmission Range (TR), Output Shaft Speed (OSS), Vehicle Speed Sensor (VSS), if equipped, or transmission connector)	Inspect for leakage and repair as required.
352 - HYDRAULIC/MECHANICAL ROUTINE
Case
	Case vent, case porosity, case cracked	Check the vent for free breathing. Check the fluid level. Check the transmission for overheat conditions. Repair as required.
Seals/Gaskets
	Leakage at gaskets, seals, etc. (refer to external sealing illustration for potential leak locations)	Remove all traces of lubricant on exposed surfaces of the transmission. Check the vent for free breathing. Operate the transmission at normal temperatures and perform Leakage Inspection check. Repair as required.
Other
	Cooler fitting, cooler tubes pressure tap, band anchor pins	Locate the source of the leak. Repair as required.

OTHER CONCERNS: POOR VEHICLE PERFORMANCE

Possible Component		Reference/Action
253 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, shift solenoids, Transmission Range (TR) sensor, Torque Converter Clutch (TCC) solenoid, Transmission Fluid Temperature (TFT) sensor	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the Powertrain Control System. Go to Pinpoint Test A , go to Pinpoint Test B or Go to Pinpoint Test C . Repair as required. Clear the DTCs, road test and repeat self-test. Also refer to Routines 241/341 Torque Converter Operation Concern: Always Applied.
	Engine driveability concerns	Inspect air intake/air filter system. Check the fuel system and fuel pressure. Refer to the Introduction - Gasoline Engines article. Inspect the exhaust system for restriction. Refer to EXHAUST SYSTEM article.
353 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Transmission Range (TR) Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Verify Correct Shift Scheduling and Engagements
	See Reference/Action	Go to the appropriate diagnostic routines.
Torque Converter Clutch (TCC) Always Applied
	See Reference/Action	Go to Hydraulic/Mechanical Routine 241/341.
TCC
	Damaged	Inspect torque converter. Install a new converter as outlined.

NOTE: 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 & 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 & HARSHNESS article for the next likely system and continue diagnosis.

OTHER CONCERNS: NOISE/VIBRATION - FORWARD OR REVERSE

Possible Component		Reference/Action
254 - ELECTRICAL ROUTINE
		No electrical concerns.
354 - HYDRAULIC/MECHANICAL ROUTINE
For Noises/Vibrations that Change with Engine Speed
	Converter components/balance weight	Locate source of disturbance. Repair as required.
	Fluid level (low) pump cavitation
	Pump assembly
	Engine drive accessories
	Transmission fluid cooler tubes grounding out
	Flexplate
For Noises/Vibrations that Change with Vehicle Speed
	Engine mounts loose or damaged	Locate source of disturbance and repair as required.
	Driveline concerns: U-joints Rear axle Suspension Modifications 1st Gear: Low One-Way Clutch (OWC) Gearset Friction elements	Refer to the following shift routine(s) for further diagnosis: Shift 1-2, Routine 320 Shift 2-3, Routine 321 Shift 3-4, Routine 322 Shift 4-3, Routine 323 Shift 3-2, Routine 324 Shift 2-1, Routine 325 Torque Converter Cycling 242/342
	2nd Gear: Intermediate OWC Intermediate clutch piston bleed hole out of 12 o'clock position Friction elements
	3rd Gear: Torque converter Case to planet support spring Friction elements
	4th Gear: Gear set Friction elements Torque converter
	Reverse: Gear set Friction elements
	Output shaft splines worn or damaged
Other Noises/Vibrations
	Main controls, valve resonance
	Selector lever cable: Vibration Grounding Cooler lines Grounding	Locate source of disturbance and repair as required.

OTHER CONCERNS: ENGINE WILL NOT CRANK

Possible Component		Reference/Action
255 - ELECTRICAL ROUTINE
Powertrain Control System
	Electrical inputs/outputs, vehicle wiring harnesses, engine starting system hardware, Transmission Range (TR) sensor	Carry out self-test. Refer to the Introduction - Gasoline Engines article for diagnosis and testing of the powertrain control system. Go to Pinpoint Test C . Repair and adjust as required.
355 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Transmission Range (TR) Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .

OTHER CONCERNS: NO PARK (P) RANGE

Possible Component		Reference/Action
256 - ELECTRICAL ROUTINE
		No electrical concerns.
356 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Transmission Range (TR) Sensor
	Damaged or incorrectly adjusted	Inspect and repair as required. Verify selector lever cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. Adjust selector lever cable as necessary. After repairing selector lever cable, verify that the TR sensor is correctly adjusted. Adjust the TR sensor as necessary. Refer to Transmission Range (TR) Sensor Adjustment .
Park Mechanism
	Output shaft ring, park brake pawl, park pawl return spring, park rod guide cup, park pawl shaft, park pawl actuating rod, manual lever detent spring damaged or assembled incorrectly	Inspect for damage or incorrect assembly and repair as required.

OTHER CONCERNS: OVERHEATING

Possible Component		Reference/Action
257 - ELECTRICAL ROUTINE
Refer to Routine 240/340, Torque Converter Operation Concern: No Apply
357 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
	Incorrect level	Adjust transmission fluid to correct level.
	Condition	Inspect condition of transmission fluid.
Other
	Damaged, blocked or reversed cooler tubes or restriction in the transmission fluid cooler	Inspect for damage and correct installation. Repair as required.
	Damaged or blocked thermostatic bypass valve	A thermostatic bypass valve that is stuck closed will only allow transmission fluid to circulate through the supply and return tubes, preventing transmission fluid from circulating through the transmission fluid cooler. Refer to TRANSAXLE/TRANSMISSION COOLING article.
Vehicle Concerns Causing Engine Overheating
		Refer to the appropriate engine cooling article.
Main Controls
	Drain back valve, torque clutch control valve, converter limit valve stuck, damaged or assembled incorrectly	Inspect for damage and repair as required.
Torque Converter Clutch (TCC)
	No apply	Refer to Routine 240/340.