C0281

DTC C0281 or C081

Circuit Description

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

Conditions for Running the DTC

Either of the following conditions will cause the DTC to run:

- The ignition is ON and the vehicle achieves at least 56 km/h (35 mph) before coming to a stop.
- The ignition is ON and the vehicle experiences an antilock brake system (ABS) event lasting at least 1 second.

Conditions for Setting the DTC

The EBCM detects an open or shorted brake switch or brake switch circuit.

Action Taken When the DTC Sets

This information-only DTC is stored in EBCM memory until it is cleared by using the specified procedure.

Conditions for Clearing the DTC

The conditions for setting the DTC are no longer present and you use the scan tool Clear DTCs function.

Diagnostic Aids

Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to the following:

- Testing for Electrical Intermittents Diagnostic Aids
- Testing for Intermittent Conditions and Poor Connections Diagnostic Aids
- Wiring Repairs Diagnostic Aids
- Connector Repairs Diagnostic Aids

Test Description

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

4. This step tests for a shorted stoplamp switch.
5. This step tests for an open stoplamp switch.