Automatic Transmission/Transaxle: Testing and Inspection

ENGINE DOES NOT START IN N OR P

1. Faulty ignition switch or starter motor.
2. Improperly adjusted manual linkage.
3. Defective inhibitor switch or wiring.
4. Defective lock-up solenoid (E4N71B).
5. Defective lock-up control unit and/or sensors (E4N71B).

ENGINE STARTS IN RANGES OTHER THAN N OR P

1. Improperly adjusted manual linkage.
2. Defective inhibitor switch or wiring.

NOISE IN N OR P

1. Incorrect oil level.
2. Incorrect throttle pressure (3N71B).
3. Incorrect line pressure (L3N7B, L4N71B, E4N71B).
4. Defective oil pump.

VEHICLE MOVES WHEN SHIFTING INTO P, OR PARKING GEAR DOES NOT DISENGAGE WHEN SHIFTING OUT OF P

1. Improperly adjusted manual linkage.
2. Parking linkage does not disengage.

DRIVE IN N

1. Improperly adjusted manual linkage.
2. Improper oil.
3. Defective manual valve.
4. Defective forward clutch (rear).

NO DRIVE IN R, BUT DRIVE IN D, 2, & 1 (CLUTCH SLIPS, POOR ACCELERATION)

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Incorrect throttle pressure (3N71B).
4. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
5. Defective manual valve.
6. Damaged seals.
7. Defective low and reverse brake.
8. Defective high-reverse clutch (front).
9. Defective forward clutch (rear).
10. Leaking oil passages.
11. Damaged or missing high-reverse clutch (front) check ball.

VEHICLE BRAKES WHEN SHIFTING INTO R

1. Improper oil.
2. Damaged seals.
3. Defective band servo.
4. Defective forward clutch (rear).
5. Defective band brake (3N71B, L3N71B).
6. Defective 2nd band brake (L4N71B).
7. Defective parking linkage.

HARSH SHIFT BETWEEN N & D

1. Improperly adjusted idle speed.
2. Defective vacuum diaphragm or piping.
3. Incorrect throttle pressure (3N71B).
4. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
5. Defective manual valve.
6. Defective forward clutch (rear).

NO DRIVE IN D, BUT DRIVE IN 2, 1, & R

1. Improperly adjusted manual linkage.
2. Incorrect throttle pressure (3N71B).
3. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
4. Defective manual valve.
5. Defective one-way clutch.
6. Incorrect oil level.

NO DRIVE IN D, 1, & 2, BUT DRIVE IN R (CLUTCH SLIPS, POOR ACCELERATION)

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Improper oil.
4. Incorrect throttle pressure (3N71B).
5. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
6. Defective manual valve.
7. Damaged seals.
8. Engine or brake malfunction.
9. Defective forward clutch (rear).
10. Leaking oil passages.
11. Defective high-reverse clutch (front).

SLIPPING CLUTCHES OR BRAKES

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Incorrect throttle pressure.
4. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
5. Improper oil.
6. Defective manual valve.
7. Defective vacuum diaphragm or piping.
8. Damaged seals.
9. Defective oil pump.
10. Leaking oil passages.

EXCESSIVE CREEP

1. Improperly adjusted idle speed.

NO CREEP

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Improperly adjusted idle speed.
4. Improper oil.
5. Defective manual valve.
6. Defective oil pump.
7. Leaking oil passages.
8. Defective forward clutch (rear).
9. Defective high-reverse clutch (front).
10. Defective direct clutch (E4N71B).

NO 1-2 UPSHIFT

1. Improperly adjusted manual linkage.
2. Defective vacuum diaphragm or piping.
3. Defective kickdown solenoid, switch, or wiring.
4. Improper oil.
5. Defective manual valve.
6. Defective governor.
7. Damaged seals.
8. Defective band servo.
9. Defective band brake (3N71B, L3N71B).
10. Defective 2nd band brake (L4N71B, E4N71B).
11. Leaking oil passages.

NO 2-3 UPSHIFT

1. Improperly adjusted manual linkage.
2. Defective vacuum diaphragm or piping.
3. Defective kickdown solenoid, switch, or wiring.
4. Improper oil.
5. Defective manual valve.
6. Defective governor.
7. Damaged seals.
8. Defective band servo.
9. Defective high-reverse clutch (front).
10. Leaking oil passages.
11. Damaged or missing high-reverse clutch (front) check ball.

DELAYED UPSHIFTS

1. Defective vacuum diaphragm or piping.
2. Defective kickdown solenoid, switch, or wiring.
3. Incorrect throttle pressure (3N71B).
4. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
5. Improper oil.
6. Defective manual valve.
7. Defective governor.
8. Leaking oil passages.

UPSHIFT FROM 1 DIRECTLY TO 3

1. Improper oil.
2. Defective manual valve.
3. Damaged seals.
4. Defective governor.
5. Defective band brake (N371B, L3N71B).
6. Defective 2nd band brake (L4N71B, E4N71B).
7. Leaking oil passages.

HARSH 1-2 UPSHIFT

1. Defective vacuum diaphragm or piping.
2. Engine stall RPM not within specifications.
3. Improper oil.
4. Defective manual valve.
5. Defective band servo.
6. Defective band brake (3N71B, L3N71B).
7. Defective 2nd band brake (L4N71B, E4N71B).
8. Defective lock-up solenoid (E4N71B).
9. Defective lock-up control unit and/or sensors (E4N71B).
10. Defective lock-up control valve (E4N71B).
11. Defective torque converter (E4N71B).

HARSH 2-3 UPSHIFT

1. Defective vacuum diaphragm or piping.
2. Incorrect throttle pressure (3N71B).
3. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
4. Defective manual valve.
5. Damaged seals.
6. Defective band servo.
7. Defective high-release clutch (front).
8. Defective lock-up solenoid (E4N71B).
9. Defective lock-up control unit and/or sensors (E4N71B).
10. Defective lock-up control valve (E4N71B).
11. Defective torque converter (E4N71B).

SLIPPING 1-2 SHIFT

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Defective vacuum diaphragm or piping.
4. Incorrect throttle pressure (3N71B).
5. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
6. Improper oil.
7. Defective manual valve.
8. Damaged seals.
9. Defective band servo.
10. Defective band brake (3N71B, L3N71B).
11. Leaking oil passages.
12. Defective 2nd band brake (E4N71B).

SLIPPING 2-3 SHIFT

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Defective vacuum diaphragm or piping.
4. Incorrect throttle pressure (3N71B).
5. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
6. Improper oil.
7. Defective manual valve.
8. Damaged seals.
9. Defective band servo.
10. Defective high-reverse clutch (front).
11. Leaking oil passages.
12. Damaged or missing high-reverse clutch (front) check ball.

VEHICLE BRAKES DURING 1-2 UPSHIFT

1. Improper oil.
2. Defective manual valve.
3. Defective low and reverse brake.
4. Defective high-reverse clutch (front).
5. Defective one-way clutch.

VEHICLE BRAKES DURING 2-3 UPSHIFT

1. Improper oil.
2. Defective band servo.
3. Defective manual valve.
4. Defective band brake (3N71B, L3N71B).
5. Defective 2nd band brake (L4N71B, E4N71B).

VEHICLE CANNOT REACH MAXIMUM SPEED

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Improper oil.
4. Incorrect throttle pressure (3N71B).
5. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
6. Engine stall RPM not within specifications.
7. Defective band servo.
8. Defective manual valve.
9. Malfunctioning engine or brakes.
10. Defective band brake (3N71B, L3N71B).
11. Defective 2nd band brake (L4N71B, E4N71B).
12. Defective low and reverse brake.
13. Defective forward clutch (rear).
14. Defective high-reverse clutch (front).
15. Defective oil pump.
16. Defective torque converter (E4N71B).

NO 2-1 OR 3-1 DOWNSHIFT

1. Defective vacuum diaphragm or piping.
2. Improper oil.
3. Defective manual valve.
4. Defective governor.
5. Damaged seals.
6. Defective band servo.
7. Defective band brake (3N71B, L3N71B).
8. Defective 2nd band brake (L4N71B, E4N71B).
9. Defective one-way clutch.

HARSH DOWNSHIFTS

1. Improperly adjusted manual linkage.
2. Defective vacuum diaphragm or piping.
3. Defective kickdown solenoid, switch or wiring.
4. Incorrect throttle pressure.
5. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
6. Defective manual valve.
7. Defective governor.
8. Leaking oil passages.
9. Defective accumulator (E4N71B).

NO KICKDOWN

1. Defective kickdown solenoid, switch or wiring.
2. Defective vacuum diaphragm or piping.
3. Improper oil.
4. Defective manual valve.
5. Defective governor.
6. Defective band brake (3N71B, L3N71B).
7. Defective 2nd band brake (L4N71B, E4N71B).
8. Leaking oil passages.

IMPROPER KICKDOWN

1. Improperly adjusted manual linkage.
2. Defective vacuum diaphragm or piping.
3. Incorrect throttle pressure (3N71B).
4. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
5. Defective governor valve.
6. Defective governor.
7. Damaged seals.
8. Defective high-reverse clutch (front).
9. Leaking oil passages.
10. Improper oil (E4N71B).

SLIPPING 3-2 DOWNSHIFT

1. Defective vacuum diaphragm or piping.
2. Incorrect throttle pressure (3N71B).
3. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
4. Improper oil.
5. Defective manual valve.
6. Damaged seals.
7. Defective band servo.
8. Defective high-reverse clutch (front).
9. Defective band brake (3N71B, L3N71B).
10. Defective 2nd band brake (L4N71B, E4N71B).
11. Leaking oil passages.
12. Damaged or missing high-reverse clutch (front) check ball.

NO DRIVE IN ANY RANGE

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Incorrect throttle pressure (3N71B).
4. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
5. Improper oil.
6. Defective manual valve.
7. Damaged seals.
8. Defective oil pump.
9. Leaking oil passages.
10. Defective parking linkage.
11. Defective lock-up control unit and/or sensors (E4N71B).
12. Defective lock-up solenoid (E4N71B).
13. Defective lock-up control valve (E4N71B).

NOISE IN D, 2, 1 & R

1. Incorrect oil level.
2. Incorrect throttle pressure (3N71B).
3. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
4. Defective forward clutch (rear).
5. Defective oil pump.
6. Defective one-way clutch.
7. Defective planetary gear.
8. Defective torque converter (E4N71B).

NO 3-2 DOWNSHIFT WHEN SHIFTING TO 2

1. Improperly adjusted manual linkage.
2. Incorrect throttle pressure (3N71B).
3. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
4. Improper oil.
5. Defective manual valve.
6. Defective band servo.
7. Defective band brake (3N71B, L3N71B).
8. Defective 2nd band brake (L4N71B, E4N71B).
9. Leaking oil passages.

2-1 DOWNSHIFT OR 2-3 UPSHIFT IN 2

1. Improperly adjusted manual linkage.
2. Incorrect throttle pressure.
3. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
4. Defective manual valve.

NO 3-2 DOWNSHIFT WHEN SHIFTED TO 1

1. Improperly adjusted manual linkage.
2. Incorrect throttle pressure (3N71B).
3. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
4. Improper oil.
5. Defective manual valve.
6. Defective governor.
7. Damaged seals.
8. Defective band servo.
9. Defective high-reverse clutch (front).
10. Defective band brake (3N71B, L3N71B).
11. Defective 2nd band brake (L4N71B, E4N71B).
12. Leaking oil passages.

NO ENGINE BRAKE IN 1

1. Improperly adjusted manual linkage.
2. Incorrect throttle pressure (3N71B).
3. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
4. Improper oil.
5. Defective manual valve.
6. Damaged seals.
7. Defective low and reverse brake.
8. Leaking oil passages.

1-2 OR 2-3 UPSHIFT IN 1

1. Improperly adjusted manual linkage.
2. Defective manual valve.
3. Leaking oil passages.

NO 2-1 DOWNSHIFT IN 1

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Improper oil.
4. Defective manual valve.
5. Defective governor.
6. Defective band servo.
7. Damaged seals.
8. Defective low and reverse brake.
9. Leaking oil passages.

HARSH 2-1 SHIFT IN 1

1. Defective vacuum diaphragm or piping.
2. Engine stall RPM not within specifications.
3. Improper oil.
4. Defective manual valve.
5. Defective low and reverse brake.

OIL SHOOTS OUT OR WHITE SMOKE IS EMITTED FROM EXHAUST PIPE DURING OPERATION

1. Improper oil level.
2. Incorrect rear lubrication.
3. Defective vacuum diaphragm or piping.
4. Improper oil.
5. Incorrect throttle pressure (3N71B).
6. Incorrect line pressure (L3N71B, L4N71B, E4N71B).
7. Engine stall RPM not within specifications.
8. Defective manual valve.
9. Damaged seals.
10. Defective high-reverse clutch (front).
11. Defective band brake (3N71B, L3N71B).
12. Defective 2nd band brake (L4N71B, E4N71B).
13. Defective low and reverse brake.
14. Defective oil pump.
15. Leaking oil passages.
16. Defective one-way clutch.
17. Defective planetary gear.
18. Defective direct clutch (E4N71B).
19. Defective forward clutch (rear).
20. Defective torque converter (E4N71B).

FOUL ODOR AT FILL PIPE

1. Incorrect oil level.
2. Improper oil.
3. Defective forward clutch (rear).
4. Defective direct clutch (L4N71B).
5. Defective high-reverse clutch (front).
6. Defective band brake (3N71B, L3N71B).
7. Defective O.D. band brake (L4N71B, E4N71B).
8. Defective 2nd band brake (L4N71B, E4N71B).
9. Defective low and reverse brake.
10. Defective oil pump.
11. Leaking oil passages.
12. Defective one-way clutch.
13. Defective planetary gear.
14. Defective torque converter (E4N71B).

TRANSMISSION OVERHEATS

1. Incorrect oil level.
2. Improper rear lubrication.
3. Incorrect line pressure.
4. Engine stall RPM not within specifications.
5. Improper oil.
6. Defective manual valve.
7. Damaged seals.
8. Defective band servo.
9. Defective high-reverse clutch (front).
10. Defective band brake (3N71B, L3N71B).
11. Defective 2nd band brake (L4N71B, E4N71B).
12. Defective low and reverse brake.
13. Defective oil pump.
14. Leaking oil passages.
15. Defective one-way clutch.
16. Defective planetary gear.
17. Defective O-ring in input shaft (3N71B, L3N71B).
18. Clogged lock-up orifice in oil pump cover (3N71B, L3N71B).
19. Defective torque converter.
20. Defective O.D. band servo (E4N71B).
21. Defective direct clutch (E4N71B).
22. Defective forward clutch (rear) (E4N71B).
23. Defective O.D. band brake (E4N71B).

NO 3-2 DOWNSHIFT (3N71B, L3N71B)

1. Defective vacuum diaphragm or piping.
2. Improper oil.
3. Defective manual valve.
4. Defective governor.
5. Damaged seals.
6. Defective band servo.
7. Defective high-reverse clutch (front).
8. Defective band brake.
9. Leaking oil passages.

HIGH DOWNSHIFT POINT BETWEEN 3-2 & 2-1 (3N71B, L3N71B)

1. Improperly adjusted manual linkage.
2. Defective vacuum diaphragm or piping.
3. Defective kickdown solenoid, switch, or wiring.
4. Incorrect throttle pressure (3N71B).
5. Incorrect line pressure (L3N71B).
6. Defective manual valve.
7. Defective governor.
8. Leaking oil passages.

TORQUE CONVERTER NOT LOCKED UP (L3N71B, L4N71B)

1. Clogged governor tube.
2. Defective governor.
3. Incorrect line pressure.
4. Defective O-ring in input shaft.
5. Defective oil pump.
6. Defective lock-up control valve.
7. Clogged lock-up orifice in oil pump cover.
8. Defective torque converter.

SLIPPING LOCK-UP PISTON (L3N71B, L4N71B)

1. Incorrect line pressure.
2. Defective O-ring in input shaft.
3. Clogged lock-up orifice in oil pump cover.
4. Defective oil pump.
5. Defective torque converter.

LOCK-UP POINT TOO HIGH OR TOO LOW (L3N71B, L4N71B)

1. Clogged governor tube.
2. Defective governor.
3. Defective lock-up control valve.

NO DRIVE IN R, D, 2 & 1 (L3N71B, L4N71B)

1. Defective lock-up control valve.
2. Defective torque converter.

NO 3-4 UPSHIFT (L4N71B, E4N71B)

1. Improperly adjusted manual linkage.
2. Defective vacuum diaphragm or piping.
3. Defective kickdown solenoid, switch, or wiring.
4. Improper oil.
5. Defective manual valve.
6. Defective governor.
7. Damaged seals.
8. Defective band servo.
9. Defective O.D. band brake.
10. Leaking oil passages.

UPSHIFT FROM 2 DIRECTLY TO 4 (L4N71B, E4N71B)

1. Improper oil.
2. Defective manual valve.
3. Damaged seals.
4. Defective governor.
5. Defective forward clutch (rear).
6. Leaking oil passages.
7. Defective high-reverse clutch (front) (E4N71B).

HARSH 3-4 UPSHIFT (L4N71B, E4N71B)

1. Defective vacuum diaphragm or piping.
2. Incorrect line pressure.
3. Defective manual valve.
4. Damaged seals.
5. Defective band servo (L4N71B).
6. Defective O.D. band brake.
7. Defective O.D. band servo (E4N71B).
8. Defective lock-up solenoid (E4N71B).
9. Defective lock-up control unit and/or sensors (E4N71B).
10. Defective lock-up control valve (E4N71B).
11. Defective torque converter (E4N71B).

SLIPPING 3-4 UPSHIFT (L4N71B, E4N71B)

1. Incorrect oil level.
2. Improperly adjusted manual linkage.
3. Defective vacuum diaphragm or piping.
4. Incorrect line pressure.
5. Improper oil.
6. Defective manual valve.
7. Damaged seals.
8. Defective band servo.
9. Defective O.D. band brake.
10. Leaking oil passages.

VEHICLE BRAKES DURING 3-4 UPSHIFT (L4N71B, E4N71B)

1. Improper oil.
2. Defective manual valve.
3. Defective direct clutch.
4. Defective high-reverse clutch (front).

NO 4-3 DOWNSHIFT (L4N71B, E4N71B)

1. Defective vacuum diaphragm or piping.
2. Improper oil.
3. Defective manual valve.
4. Defective governor.
5. Damaged seals.
6. Defective direct clutch.
7. Defective high-reverse clutch (front).
8. Defective O.D. band brake.
9. Leaking oil passages.
10. Defective power shift switch (E4N71B).
11. Defective O.D. cancel solenoid (E4N71B).
12. Defective lock-up solenoid (E4N71B).
13. Defective O.D. cancel valve (E4N71B).

NO 3-2 OR 4-2 DOWNSHIFT (L4N71B, E4N71B)

1. Defective vacuum diaphragm or piping.
2. Improper oil.
3. Defective manual valve.
4. Defective governor.
5. Damaged seals.
6. Defective band servo.
7. Defective high-reverse clutch (front).
8. Defective 2nd band brake.
9. Leaking oil passages.
10. Defective O.D. band brake.

HIGH DOWNSHIFT POINT FROM 4-3, 3-2 & 2-1 (L4N71B, E4N71B)

1. Improperly adjusted manual linkage.
2. Defective vacuum diaphragm or piping.
3. Defective kickdown solenoid, switch or wiring.
4. Incorrect line pressure.
5. Defective manual valve.
6. Defective governor.
7. Leaking oil passages.
8. Defective lock-up control unit and/or sensors (E4N71B).

SLIPPING 4-3 DOWNSHIFT (L4N71B, E4N71B)

1. Defective vacuum diaphragm or piping.
2. Incorrect line pressure.
3. Improper oil.
4. Defective manual valve.
5. Damaged seals.
6. Defective band servo.
7. Defective direct clutch.
8. Defective high-reverse clutch (front).
9. Defective O.D. band brake.
10. Leaking oil passages.
11. Damaged or missing high-reverse clutch (front) check ball.

SHIFTS TO OVERDRIVE WITH O.D. CANCEL SWITCH ON (L4N71B, E4N71B)

1. Defective O.D. cancel switch or wiring.
2. Defective O.D. cancel solenoid.
3. Defective O.D. cancel valve.

O.D. CANCEL SWITCH NOT ILLUMINATED WITH IGNITION SWITCH AT ON (L4N71B, E4N71B)

1. Defective O.D. cancel switch or wiring.
2. Defective O.D. indicator switch.

O.D. CANCEL SWITCH NOT ILLUMINATED WITH TRANSMISSION IN OVERDRIVE (L4N71B, E4N71B)

1. Defective O.D. cancel switch or wiring.
2. Defective O.D. indicator switch.

NO LOCK-UP IN ANY RANGE (E4N71B)

1. Defective lock-up solenoid.
2. Defective lock-up control unit and/or sensors.
3. Defective torque converter.
4. Defective lock-up control valve.

NO LOCK-UP IN 4 (L4N71B)

1. Defective governor.
2. Defective O.D. band servo.
3. Defective lock-up control valve.
4. Defective O.D. band brake.

HARSH SHIFT CHANGING FROM LOCK-UP OFF TO ON (E4N71B)

1. Improper oil.
2. Incorrect line pressure.
3. Defective governor.
4. Defective lock-up control unit and/or sensors.
5. Defective lock-up control valve.
6. Defective O.D. brake band.

NO KICKDOWN IN 4 (E4N71B)

1. Defective kickdown solenoid, switch, or wiring.
2. Defective vacuum diaphragm or piping.
3. Improper oil.
4. Defective control valve.
5. Defective governor.
6. Defective high-reverse clutch (front).
7. Defective direct clutch.
8. Leaking oil passages.

IMPROPER KICKDOWN IN 4 (E4N71B)

1. Improperly adjusted manual linkage.
2. Defective vacuum diaphragm or piping.
3. Incorrect line pressure.
4. Improper oil.
5. Defective control valve.
6. Defective governor.
7. Damaged seals.
8. Defective O.D. brake band.
9. Leaking oil passages.

SHIFT PATTERN DOES NOT CHANGE (E4N71B)

1. Defective vacuum diaphragm or piping.
2. Defective O.D. cancel switch.
3. Defective kickdown solenoid, switch, or wiring.
4. Defective O.D. cancel solenoid.
5. Engine stall RPM not within specifications.
6. Defective lock-up control unit and/or sensors.
7. Defective control valve.
8. Defective O.D. cancel valve.

O.D. CANCEL SWITCH NOT ILLUMINATED WITH TRANSMISSION IN OVERDRIVE (E4N71B)

1. Defective O.D. cancel switch.
2. Defective lock-up control unit and/or sensors.

POWER SHIFT SWITCH NOT ILLUMINATED WHEN SHIFT PATTERN TURNED TO POWER (E4N71B)

1. Defective O.D. cancel switch.
2. Defective lock-up control unit and/or sensors.