Diagnostic Trouble Code (DTC) Information TCM-Dd01
Condition
The transmission control moduel (TCM) and gear selector module (GSM) communicate with each other in a network via standardized serial communication - local interconnect network (LIN). The control modules transmit and receive information.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The signal from the Gear selector module (GSM) is incorrect.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition on.
Substitute Value
- Manual gear shift position (MAN) function is blocked.
- Winter program (W) function is blocked.
Possible Source
- The communication lead between the gear selector module (GSM) and the transmission control module (TCM) is short-circuited to voltage or ground.
Fault symptom[s]
- General warning lamp lit
- Gear selector indicator does not function