C0278
DTC C0278
Circuit Description
The body control module (BCM) applies a ground through the brake pedal position sensor reference low circuit to the brake pedal position sensor. The BCM supplies a 10-volt reference through the brake sensor reference voltage circuit to the brake pedal position sensor. The brake pedal position sensor sends a variable voltage signal through the brake pedal position sensor signal circuit to the BCM as the brake pedal is applied.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0278 Brake Pedal Position Sensor Not Calibrated
Conditions for Running the DTC
The battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
DTC C0278 will set if the brake position sensor is out of calibration.
Action Taken When the DTC Sets
The stop lamps may not function correctly
Conditions for Clearing the DTC
* This DTC will clear on current status after the condition for setting the fault is corrected.
* A history DTC will clear after 100 consecutive ignition cycles with out a fault present.
* History and current DTCs can be cleared using a scan tool.
Diagnostic Aids
* If DTC C0278 sets then recalibrate the brake position sensor.
* Perform a visual inspection for a loose or poor connection at all related components. refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics
Test
