C0278
DTC C0278
Circuit Description
The body control module (BCM) applies a ground through the brake sensor reference low circuit to the brake position sensor. The BCM supplies a 5-volt reference through the brake sensor reference voltage circuit to the brake position sensor. When the brake pedal is being applied, the brake position sensor then sends a variable voltage signal through the brake sensor signal circuit to the BCM.
Conditions for Running the DTC
The battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
C0278 00
This DTC will set if the brake position sensor is out of calibration.
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.
* A history and current DTCs can be cleared using a scan tool.
Diagnostic Aids
* If DTC C0278 00 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
