C1294

DTC C1294 Brake Lamp Switch Circuit Always Active






Circuit Description

This DTC occurs when the internal self-checking safety logic has determined that the stoplamp/BTSI switch is continuously on. The TCS cannot be activated when the stoplamp/BTSI switch is on.

Conditions for Setting the DTC

The DTC sets if the following occur:

- The vehicle speed is greater than 40 km/h (25 mph).
- The brake was never off during 2 consecutive drive cycles.

Action Taken When the DTC Sets

- A malfunction DTC is stored.
- The TCS is disabled.
- The TRACTION CONTROL indicator is turned ON.
- The ABS remains functional.

Conditions for Clearing the DTC

- The condition for DTC is no longer present and you used scan tool Clear DTCs function.
- The condition for DTC is no longer present and you used the On-Board Clear DTCs function.
- The EBTCM does not detect the DTC in 50 drive cycles.

Diagnostic Aids

- It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
- An intermittent malfunction can be caused by poor connections, broken insulation, or a wire that is broken inside the insulation.
- If an intermittent malfunction exists, refer to Intermittents and Poor Connections.
- This condition may be cause by the following:
- A short to voltage in the stoplamp/BTSI switch circuit.
- A misadjusted or shorted stoplamp/BTSI switch.
- A pedal that is binding.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

4. This step tests for a short to voltage.