C0273

DTC C0271-C0273, C0284








Circuit Description
This DTC identifies a malfunction within the EBCM

Conditions for Running the DTC
The ignition is ON.

Conditions for Setting the DTC
The EBCM detects an internal malfunction.

Action Taken When the DTC Sets
If equipped, the following actions may occur:
^ The EBCM disables the ABS/TCS/DRP.
^ The ABS indicator turns ON.
^ The TRACTION OFF indicator turns ON.
^ The red brake warning indicator turns ON.

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
Replace the EBCM if DTC C0273 or DTC C0284 continues to set intermittently.





DTC C0271-C0273, C0284

DTC C0281
Circuit Description
The stop lamp switch signal informs the 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 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.

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.