C0277

DTC C0277

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 (BPPS). When the brake pedal is being applied, the BPPS 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
- An open or a short to battery positive voltage or ground on the low reference circuit of the BPPS is present.
- A short to ground or an open in the stop lamp switch signal circuit is present.
- A short to ground or an open in the 10-volt reference circuit on the BPPS.
- A short to ground in the instrument panel (I/P) dimming voltage reference circuit.
- A malfunctioning BPPS 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.

TEST

Step 1 - Step 9:

Step 10 - Step 12: