B1192

Fault Symptom
TCS system cannot be turned off with the switch.

Condition
Control module pin 1 shorted to ground for longer than 10 seconds, or switch pressed continuously for more than 10 seconds.

Diagnostic Procedure
1. On repeated depression of the TCS switch the TCS OFF-lamp should come on and go out alternately.
If this is OK, clear the trouble code and drive the car to check whether the code is generated afresh.
2. Remove the TCS switch from the dash. Unplug the connector from the switch and check that the resistance across pins 5 and 7 of the switch is <1 ohm when the switch is depressed and infinite (OL) when it is released.
If the readings are incorrect, install a replacement switch.
3. With the ignition switch turned to the Drive position, check that battery + is present across pin 5 of the switch connector and a good ground.
If it is not, check the cable between pin 5 of the connector and pin 1 of the TCS control module for continuity/shorting to ground.
4. Check that battery + is present across pin 7 of the switch connector and B positive (+).
If it is not, check the cable between pin 7 of the connector and grounding point G34S for continuity.
5. Clear the trouble code. Start the car and drive it to check whether the code is generated afresh.
- If it is then see preliminary diagnostic information.