EC-at (G4A-El)

Vehicle Does Not Move in D, S, L Or R Range

1. Fluid level too low or fluid contaminated.
2. Incorrectly adjusted selector lever.
3. Malfunctioning control valve(s).
4. Defective oil pump.
5. Problem in hydraulic circuit.
6. Defective torque converter.
7. Defective forward clutch.
8. Defective reverse clutch.
9. Defective one way clutch 1.
10. Defective one way clutch 2.
11. Defective parking gear.

Vehicle Moves In N Range

1. Incorrectly adjusted selector lever.
2. Malfunctioning control valve(s).

Excessive Creep

1. Incorrectly adjusted throttle cable.
2. Check idle speed and ignition timing.
3. Defective torque converter.

No Creep At All

1. Fluid level too low or fluid contaminated.
2. Incorrectly adjusted selector lever.
3. Incorrectly adjusted throttle cable.
4. Malfunctioning control valve(s).
5. Defective oil pump.
6. Problem in hydraulic circuit.
7. Defective forward clutch.
8. Defective reverse clutch.

No Shift

1. Defective inhibitor switch.
2. Defective hold switch.
3. Defective 1-2 solenoid.
4. Defective 2-3 solenoid.
5. Defective 3-4 solenoid.
6. Fluid level too low or fluid contaminated.
7. Incorrectly adjusted selector cable.
8. Malfunctioning control valve(s).
9. Defective oil pump.

Abnormal Shift Sequence

1. Defective inhibitor switch.
2. Defective hold switch.
3. Defective throttle sensor.
4. Defective cruise control switch.
5. Defective water temperature switch.
6. Defective pulse generator.
7. Defective 1-2 solenoid.
8. Defective 2-3 solenoid.
9. Defective 3-4 solenoid.
10. Fluid level too low or fluid contaminated.
11. Incorrectly adjusted selector lever.
12. Malfunctioning control valve(s).
13. Defective 2-4 brake band and/or servo.

Frequent Shifting

1. Defective inhibitor switch.
2. Defective mode switch.
3. Defective throttle sensor.
4. Defective cruise control switch.
5. Defective pulse generator.
6. Defective 1-2 solenoid.
7. Defective 2-3 solenoid.
8. Defective 3-4 solenoid.
9. Defective lockup solenoid.
10. Malfunctioning control valve(s).

Excessively High Or Low Shift Point

1. Defective inhibitor switch.
2. Defective mode switch.
3. Defective hold switch.
4. Defective idle switch.
5. Defective throttle sensor.
6. Defective throttle generator.
7. Defective 1-2 solenoid.
8. Defective 2-3 solenoid.
9. Defective 3-4 solenoid.
10. Incorrectly adjusted selector cable.
11. Malfunctioning control valve(s).

No Lockup

1. Defective brake light switch.
2. Defective throttle sensor.
3. Defective cruise control switch.
4. Defective water temperature switch.
5. Defective pulse generator.
6. Defective 1-2 solenoid.
7. Defective 2-3 solenoid.
8. Defective 3-4 solenoid.
9. Defective lockup solenoid.
10. Incorrectly adjusted selector lever.
11. Defective torque converter.

No Kickdown

1. Defective inhibitor switch.
2. Defective hold switch.
3. Defective throttle sensor.
4. Incorrectly adjusted selector lever.

Engine Runaway Or Slip when Starting Vehicle

1. Defective inhibitor switch.
2. Fluid level too low or fluid contaminated.
3. Malfunctioning control valve(s).
4. Defective oil pump.
5. Defective forward clutch.
6. Defective one way clutch 1.

Engine Runaway Or Slip When Upshifting Or Downshifting

1. Defective inhibitor switch.
2. Fluid level too low or fluid contaminated.
3. Malfunctioning control valve(s).
4. Defective oil pump.
5. Defective forward clutch.
6. Defective reverse clutch.
7. Defective 3-4 clutch.
8. Defective 2-4 brake band and/or servo.
9. Defective one way clutch 1.

Excessive N To D Or N To R Shift Shock

1. Fluid level too low or fluid contaminated.
2. Check idle speed and ignition timing.
3. Malfunctioning control valve(s).
4. Defective accumulator(s).
5. Defective forward clutch.
6. Defective reverse clutch.

Excessive Shift Sock When Upshifting Or Downshifting

1. Fluid level too low or fluid contaminated.
2. Incorrectly adjusted throttle cable.
3. Malfunctioning control valve(s).
4. Defective accumulator(s).
5. Defective coasting clutch.
6. Defective 3-4 clutch.
7. Defective 2-4 brake band and/or servo.

Excessive Shift shock When changing Ranges

1. Defective inhibitor switch.
2. Incorrectly adjusted selector lever.
3. Malfunctioning control valve(s).
4. Defective coasting clutch.
5. Defective low and reverse brake.

Transmission Noisy In N Or P Range

1. Fluid level too low or fluid contaminated.
2. Defective oil pump.
3. Defective torque converter.
4. Defective differential assembly.

Transmission Noisy In D, S, L Or R Range

1. Fluid level too low or fluid contaminated.
2. Defective forward clutch.
3. Defective one way clutch 1.
4. Defective planetary gear.

No Engine Braking

1. Defective 2-3 solenoid.
2. Defective 3-4 solenoid.
3. Malfunctioning control valve(s).
4. Problem in hydraulic circuit.
5. Defective coasting clutch.
6. Defective low and reverse brake.

No Mode Change

1. Defective inhibitor switch.
2. Defective mode switch.
3. Defective hold switch.
4. Defective throttle sensor.
5. Defective water temperature switch.
6. Defective vehicle speed sensor.
7. Defective pulse generator.
8. Defective 1-2 solenoid.
9. Defective 2-3 solenoid.
10. Defective 3-4 solenoid.
11. Defective lockup solenoid.

Transmission Overheats

1. Defective lockup solenoid.
2. Fluid level too low or fluid contaminated.
3. Malfunctioning control valve(s).
4. Defective oil pump.
5. Defective torque converter.

Vehicle Moves In P, Or Parking Gear Nor Disengaged When P Is Disengaged

1. Incorrectly adjusted selector lever.
2. Defective parking gear.

Hold Indicator Flashes

1. Defective throttle sensor.
2. Defective vehicle speed sensor.
3. Defective pulse generator.
4. Defective 1-2 solenoid.
5. Defective 2-3 solenoid.
6. Defective 3-4 solenoid.
7. Defective lockup solenoid.

Engine Will Not Start

1. Defective inhibitor switch.
2. Incorrectly adjusted selector lever.