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. refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics

Test

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Step 9 - Step 12: