C1294

DTC C1294





Circuit Description
The stop lamp switch signal informs the electronic brake control module (EBCM) when the brake pedal is pressed.

DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C1294 Brake Lamp Switch Circuit always Active

Conditions for Running the DTC
The vehicle speed is greater than 40 km/h (25 mph).

Conditions for Setting the DTC
The stop lamp switch input was active for 2 consecutive ignition cycles.

Action Taken When the DTC Sets
^ The EBCM disables the TCS for the duration of the ignition cycle.
^ The Traction Off indicator turns ON.
^ The ABS remains functional.

Conditions for Clearing the DTC
^ The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
^ The electronic brake control module (EBCM) automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids
Possible causes of this DTC are the following conditions:
^ The stop lamp switch circuit is shorted to voltage.
^ The stop lamp switch is misadjusted.
^ The stop lamp switch is stuck closed.
^ A brake pedal that is binding.
^ Both brake light bulbs are burned out.

Test Description
The number below refers to the step number on the diagnostic table.
2. Test for the current state of the brake lamp switch parameter.