Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
The automatic transmission control module (TCM) receives a signal from the pressure switch for lock-up PS4 to check the lock-up valve position. Diagnostic trouble code (DTC) TCM-0053 is stored if the lock-up solenoid has stuck in the open position.

Substitute value
- The control module (TCM) "Emergency mode II" program has been initiated.

Possible source
- The pressure switch for lock-up is jammed
- Contact resistance in the terminals
- The transmission oil level is too high
- Mechanical fault in the transmission control system
- There is an electrical fault in the pressure sensor circuit.

Fault symptom[s]
- General orange warning lamp lit
- No lock-up function
- Harsh gear shifting.

Hint: Harsh gear shifting can be caused by:
- no reduction of line pressure when shifting
- no reduction of line pressure when moving the gear selector between positions P-R, N-R and N-D
- no torque limiting request to the engine control module (ECM) when shifting.