Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) TCM-001F is stored if the control module registers that the signal from the speed sensor is missing.

Substitute value
- None.

Possible source
- Contact resistance in the terminals
- Open-circuit in the power supply
- Open-circuit in the signal cable
- Defective vehicle speed sensor (VSS).

Fault symptom[s]
- Warning lamp for the automatic transmission flashes
- No lock-up function
- Harsh gear shifting.

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