Automatic Transmission/Transaxle: Testing and Inspection

ENGINE DOES NOT START IN N OR P

1. Manual linkage adjustment.
2. Inhibitor switch and wiring.

ENGINE STARTS IN EVERY POSITION EXCEPT N OR P

1. Manual linkage adjustment.
2. Inhibitor switch or wiring.

HARSH ENGAGEMENT WHEN SHIFTED FROM N TO D

1. Engine idle speed high.
2. Vacuum diaphragm or line.
3. Check control pressure.
4. Valve body.
5. Forward clutch.

NO DRIVE IN D ONLY

1. Manual linkage adjustment.
2. Check control pressure.
3. Valve body.
4. One-way clutch.

NO DRIVE IN D, 1, 2; SLIPS EASILY OR IS DIFFICULT TO ACCELERATE

1. Manual linkage adjustment.
2. Check control pressure.
3. Valve body.
4. Defective gasket between transmission case and differential and reduction case or between differential and reduction case and converter housing.
5. Forward clutch.
6. Leakage in hydraulic system.
7. Reverse clutch.

NO DRIVE IN R; SLIPS EASILY OR IS HARD TO ACCELERATE

1. Manual linkage adjustment.
2. Check control pressure.
3. Valve body.
4. Reverse clutch.
5. Forward clutch.
6. Leakage in hydraulic system.
7. Reverse clutch check ball.

NO DRIVE IN ANY SELECTOR POSITION

1. Check fluid level.
2. Manual linkage adjustment.
3. Check control pressure.
4. Valve body.
5. Oil pump.
6. Leakage in hydraulic system.
7. Parking linkage.

VEHICLE MOVES SLUGGISHLY

1. Check fluid level.
2. Manual linkage adjustment.
3. Check control pressure.
4. Valve body.
5. Oil pump.
6. Leakage in hydraulic system.
7. One-way clutch.

VEHICLE MOVES IN N

1. Manual linkage adjustment.
2. Valve body.
3. Forward clutch.

MAXIMUM SPEED TOO LOW OR INSUFFICIENT ACCELERATION

1. Check fluid level.
2. Manual linkage adjustment.
3. Check control pressure.
4. Check stall speed.
5. Band adjustment.
6. Valve body.
7. Defective band.
8. Low-reverse brake.
9. Forward clutch.
10. Reverse clutch.
11. Oil pump.

DRAGS WHEN SHIFTED TO R

1. Band adjustment.
2. Forward clutch.
3. Defective band.
4. Parking linkage.

EXCESSIVE CREEPING

1. Engine idle speed high.

TOTAL ABSENCE OF CREEPING

1. Check fluid level.
2. Manual linkage adjustment.
3. Incorrect engine idle speed.
4. Valve body.
5. Oil pump.
6. Leakage in hydraulic system.
7. Forward clutch.
8. Reverse clutch.

NO 1-2 SHIFT IN D

1. Manual linkage adjustment.
2. Vacuum diaphragm or line.
3. Valve body.
4. Governor valve.
5. Band adjustment.
6. Servo pipe.
7. Defective band.
8. Leakage in hydraulic system.

NO 2-3 SHIFT IN D

1. Manual linkage adjustment.
2. Vacuum diaphragm or line.
3. Valve body.
4. Governor valve.
5. Band adjustment.
6. Servo pipe.
7. Reverse clutch.
8. Leakage in hydraulic system.
9. Reverse clutch check ball.

1-2 OR 2-3 SHIFT SPEED TOO HIGH

1. Vacuum diaphragm or line.
2. Downshift solenoid, kickdown switch and wiring.
3. Check control pressure.
4. Valve body.
5. Governor valve.
6. Leakage in hydraulic system.

SHIFTS FROM 1-3

1. Valve body.
2. Governor valve.
3. Defective band.
4. Leakage in hydraulic system.

HARSH 1-2 SHIFT

1. Vacuum diaphragm or line.
2. Check stall speed.
3. Valve body.
4. Band adjustment.
5. Defective band.

HARSH 2-3 SHIFT

1. Vacuum diaphragm or line.
2. Check control pressure.
3. Valve body.
4. Band adjustment.
5. Reverse clutch.

1-2 SLIPS

1. Check fluid level.
2. Manual linkage adjustment.
3. Vacuum diaphragm or line.
4. Check control pressure.
5. Valve body.
6. Band adjustment.
7. Servo pipe.

2-3 SLIPS

1. Check fluid level.
2. Manual linkage adjustment.
3. Vacuum diaphragm or line.
4. Check control pressure.
5. Valve body.
6. Band adjustment.
7. Servo pipe.
8. Reverse clutch.
9. Leakage in hydraulic system.
10. Reverse clutch check ball.

DRAGS WHEN SHIFTED FROM 1-2

1. Valve body.
2. Low and reverse band.
3. Reverse clutch.
4. One-way clutch.

NO 3-2 SHIFT

1. Vacuum diaphragm or line.
2. Valve body.
3. Governor valve.
4. Band adjustment.
5. Servo pipe.
6. Reverse clutch.
7. Defective band.
8. Leakage in hydraulic system.

NO 2-1 OR 3-1 SHIFT

1. Vacuum diaphragm or line.
2. Valve body.
3. Governor valve.
4. Band adjustment.
5. Defective band.
6. One-way clutch.

SHOCK DUE TO SPEED SHIFTING FELT WHEN ACCELERATOR PEDAL IS RELEASED

1. Manual linkage adjustment.
2. Vacuum diaphragm or line.
3. Downshift solenoid, kickdown switch and wiring.
4. Check control pressure.
5. Valve body.
6. Governor valve.
7. Leakage in hydraulic system.

3-2 OR 2-1 SHIFT SPEED TOO HIGH

1. Manual linkage adjustment.
2. Vacuum diaphragm or line.
3. Downshift solenoid, kickdown switch and wiring.
4. Check control pressure.
5. Valve body.
6. Governor valve.
7. Leakage in hydraulic system.

NO 3-2 DOWNSHIFT WITHIN KICKDOWN LIMITS

1. Downshift solenoid, kickdown switch and wiring.
2. Vacuum diaphragm or line.
3. Valve body.
4. Governor valve.
5. Servo pipe.
6. Defective band.
7. Forward clutch.

DOWNSHIFT AT SPEED ABOVE KICKDOWN LIMIT

1. Manual linkage adjustment.
2. Vacuum diaphragm or line.
3. Check control pressure.
4. Valve body.
5. Governor valve.
6. Reverse clutch.
7. Leakage in hydraulic system.

SLIPS 3-2 DOWNSHIFT

1. Vacuum diaphragm or line.
2. Check control pressure.
3. Valve body.
4. Band adjustment.
5. Servo pipe.
6. Reverse clutch.
7. Defective band.
8. Leakage in hydraulic system.
9. Reverse clutch check ball.

NO 3-2 FORCED DOWNSHIFT

1. Manual linkage adjustment.
2. Check control pressure.
3. Valve body.
4. Band adjustment.
5. Defective band.
6. Leakage in hydraulic system.

DOWNSHIFTING 2-1 OR UPSHIFTING 2-3 WHEN SELECTOR LEVER IS PLACED IN 2

1. Manual linkage adjustment.
2. Check control pressure.
3. Valve body.

NO 3-2 DOWNSHIFT WHEN SELECTOR LEVER IS PLACED IN 1

1. Manual linkage adjustment.
2. Check control pressure.
3. Valve body.
4. Governor valve.
5. Band adjustment.
6. Reverse clutch.
7. Defective band.
8. Leakage in hydraulic system.

NO ENGINE BRAKING IN 1

1. Manual linkage adjustment.
2. Check control pressure.
3. Valve body.
4. Low and reverse band.
5. Leakage in hydraulic system.

UPSHIFTING FROM 1-2 OR 2-3 WHEN SELECTOR LEVER IS PLACED IN 1

1. Manual linkage adjustment.
2. Valve body.
3. Leakage in hydraulic system.

NO 2-1 SHIFT WHEN SELECTOR LEVER IS PLACED IN 1

1. Check fluid level.
2. Manual linkage adjustment.
3. Valve body.
4. Governor valve.
5. Band adjustment.
6. Low and reverse band.
7. Leakage in hydraulic system.

HARSH 2-1 DOWNSHIFT WHEN SELECTOR IS PLACED IN 1

1. Vacuum diaphragm or line.
2. Check stall speed.
3. Valve body.
4. Low and reverse band.

TRANSMISSION OVERHEATED

1. Check fluid level.
2. Check control pressure.
3. Check stall speed.
4. Valve body.
5. Band adjustment.
6. Reverse clutch.
7. Defective band.
8. Low and reverse band.
9. Oil pump.
10. Leakage in hydraulic system.
11. Planetary gear.

EXCESSIVE CHATTER IN N OR P

1. Check fluid level.
2. Check control pressure.
3. Valve body.

NO SHOCK FELT OR ENGINE RACES WHEN SHIFTED FROM 1-2

1. Check control pressure.
2. Band adjustment.
3. Servo pipe.
4. Check fluid.

CREEPING IN P

1. Parking linkage.

DRAGS WHEN SHIFTED FROM 2-3

1. Band adjustment.
2. Fluid contamination.
3. Valve body.
4. Brake band and band servo.

VEHICLE EXHAUST EMITS WHITE SMOKE OR FLUID SPOUTS OUT WHILE RUNNING

1. Stall speed.
2. Check control pressure.
3. Vacuum diaphragm or line.
4. Reverse clutch.
5. Brake band.
6. Low & reverse brake.
7. One-way clutch.
8. Forward clutch.

UNUSUAL OIL SMELL FROM SUPPLY PIPE

1. Drain and inspect fluid.
2. Forward clutch.
3. Reverse clutch.
4. Brake band.
5. Low & reverse brake.

LOUD NOISE IN R, 2 OR 1

1. Oil pump.
2. One-way clutch.
3. Transfer gear.

4 WHEEL DRIVE TROUBLESHOOTING

The following symptoms apply to 4 wheel drive models only. Refer to ``2 & 4 Wheel Drive Troubleshooting'' for symptoms common to 2 & 4 wheel drive models.

SLIP WHEN STARTING IN 4 WHEEL DRIVE

1. Transfer valve, transfer pipe, rear drive shaft seal ring.

DIFFERENTIAL GEAR OIL IS CONTAMINATED WITH AUTOMATIC TRANSMISSION FLUID

1. Leak in hydraulic system.
2. Drive pinion rear oil seal.
3. Governor shaft oil seal.
4. Stator shaft and reduction gear oil seal and O-rings.

AUTOMATIC TRANSMISSION FLUID CONTAMINATED WITH DIFFERENTIAL GEAR OIL

1. Drive pinion rear oil seal.
2. Governor shaft oil seal.
3. Stator shaft and reduction gear oil seal and O-ring.

LOUD NOISE WHEN RUNNING IN 3

1. Hypoid gear.
2. Reduction gear.

LOUD NOISE WHEN DRIVEN IN 4 WHEEL DRIVE 3

1. Transfer gear.