B1192

TCS Switch Shorted To Ground

Fault Symptom
- The Traction Control System (TCS) system cannot be turned off with the TCS switch

Conditions
- Control module input pin 1 shorted to ground for more than 10 seconds, or switch held depressed for more than 10 seconds.

Action
- Check the function of the switch.
- Ignition in ON position.

1 If the TCS switch is pressed repeatedly, the TCS OFF lamp should alternately go on and off.
- If this is OK, proceed to point 5.
- If the function is faulty, proceed to point 2.
2 Remove the TCS switch from the facia.
- Unplug the connector from the switch and check that the resistance across pins 5 and 7 of the switch is below 1 Ohm when the switch is depressed and infinite (OL) when the switch is not depressed.
- If values are incorrect, change the switch
3 With the ignition in the drive position, check that there is Batt+ across pin 5 of the switch contact and a safe grounding point.
- If this is not the case, check the lead between pin 5 of the contact and pin 1 of the TCS control module for breaks/short circuit to ground.
4 Check that there is Batt+ between pin 7 of the switch contact and B plus.
- If this is not the case, check for breaks in the lead between pin 7 on the connector and grounding point G8.
5 Erase the diagnostic trouble code, test-drive the car and see if the diagnostic trouble code is reregistered.
- If the trouble code is registered, proceed to Control Module, Procedure Prior To Replacement.
- If the diagnostic trouble code is not registered, the action taken was correct or the fault was of the intermittent type.