Diagnostic Trouble Code (DTC) Information TCM-0194

Condition 

Fig 1: Identifying Top Panel Assembly

Courtesy of VOLVO CARS CORPORATION

The gear selector module (GSM) communicates with the transmission control module (TCM) via an internal network, Local Interconnect Network (LIN). The gear selector module (GSM) controls functions such as shift-lock, manual shifting (Man) and the indication of the chosen gear position in the top panel of the gear selector.

The diagnostic trouble code (DTC) is stored if the gear selector module (GSM) receives ten fault messages on the network.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value 

• None.

Possible Source 

• Communication interference.

Fault symptom[s] 

• General warning lamp lit.