Symptom Related Diagnostic Procedures

NO UPSHIFT FROM 1ST TO 2ND

1. 1-2 shift valve defective.
2. 2nd brake solenoid defective.
3. Controller defective, disconnected or poor connection.

NO UPSHIFT FROM 2ND TO 3RD

1. 2-3 shift valve defective.
2. Direct clutch solenoid defective.
3. Controller defective, disconnected or poor connection.

NO DOWNSHIFT FROM 2ND TO 1ST OR 3RD TO 2ND

1. Accelerator switch defective.
2. Controller defective, disconnected or poor connection.

STALL SPEED TOO LOW

1. Defective torque converter.
2. Engine malfunction.

STALL SPEED TOO HIGH IN DRIVE

1. Forward clutch slipping
2. Defective one-way clutch.

STALL SPEED TOO HIGH IN REVERSE

1. Slipping direct clutch.
2. Slipping first-reverse brake.

LINE PRESSURE TOO HIGH IN DRIVE AND REVERSE

1. Defective regulator valve.
2. Defective throttle valve.
3. Improperly adjusted accelerator cable.
4. Improperly adjusted oil pressure control cable.

LINE PRESSURE TOO LOW IN DRIVE AND REVERSE

1. Defective oil pump.
2. Defective regulator valve.
3. Defective throttle valve.
4. Improperly adjusted accelerator cable.
5. Improperly adjusted oil pressure control cable.

LINE PRESSURE TOO LOW IN DRIVE

1. Leaking forward clutch oil circuit.
2. Leaking oil circuit in Drive range.

LINE PRESSURE TOO LOW IN REVERSE

1. Leaking direct clutch oil circuit.
2. First-reverse brake oil circuit leakage.
3. Leaking oil circuit in Reverse range.