C0277
DTC C0277
CIRCUIT DESCRIPTION
The body control module (BCM) applies a ground through the brake sensor reference low circuit to the brake pedal position (BPP) sensor. The BCM supplies a 5-volt reference through the brake sensor reference voltage circuit to the BPP sensor. When the brake pedal is being applied, the BPP sensor then sends a variable voltage signal through the brake sensor signal circuit to the BCM.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC C0277 Brake Pedal Position Sensor Circuit
CONDITIONS FOR RUNNING THE DTC
The battery voltage must be between 9-16 volts.
CONDITIONS FOR SETTING THE DTC
DTC C0277 06: A short to ground or an open in the brake position sensor circuit is present.
DTC C0277 07: A short battery positive voltage in the brake position sensor circuit or the brake position sensor low reference circuit is present.
DTC C0277 09: A malfunctioning BPP sensor or BCM.
ACTION TAKEN WHEN THE DTC SETS
The stop lamps will not function correctly.
CONDITIONS FOR CLEARING THE DTC
- The 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 without a fault present.
- A history or current DTC can be cleared using a scan tool.
DIAGNOSTIC AIDS
- Perform a visual inspection for loose or poor connections at all related components.
- If DTC C0277 09 is set, replace the BPP sensor. If the DTC resets, replace the BCM.
TEST
