Checking Cruise Control Disengagement Function

Fault Symptom
- The cruise control does not disengage when the Traction Control System (TCS) function is activated

Action
1 Connect the ISAT and select the "BRAKE LIGHT SWITCH" command in the "OBTAIN READOUTS" menu.
- Check that the brake light switch is in working order.
If it is, proceed to point 2.
If it is faulty, check the operation of the brake light switch.
Also check for breaks in the leads between crimped connector J32 and TCS control module pin 23.

WARNING:
The car can be jacked up to activate the TCS function. If this method is used, proceed with extreme care. If only the front of the car is raised and supported on stands, the handbrake must always be applied and personnel should never stand in front of the car or beside the front wheels while the test is in progress. Speed should be restricted to the minimum possible above 4 km/h.

2 Select "DISENG CRUISE CONT" in the "OBTAIN READOUTS" menu and check that the operation is correct when the TCS function is activated or the brakes are applied.

Important: The TCS lamp lights for about 1 second before disengagement.

- If this functions correctly, check for breaks and shorts in the lead from TCS control module pin 5 to cruise control pin G.
- If the function is faulty, proceed to Control Module, Procedure Prior To Replacement.