Chevrolet Trax: DTC C0277 OR C0890

Diagnostic Instructions

• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
• Review Strategy Based Diagnosis for an overview of the diagnostic approach.
• Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC C0277 06

Brake Pedal Position Sensor Circuit Low Voltage/Open

DTC C0277 07

Brake Pedal Position Sensor Circuit High Voltage

DTC C0277 09

Brake Pedal Position Sensor Circuit Too Fast Transitions

DTC C0277 4B

Brake Pedal Position Sensor Circuit Calibration Not Learned

DTC C0890 03

Control Module Voltage Reference Output 3 Circuit Low Voltage

DTC C0890 07

Control Module Voltage Reference Output 3 Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The brake pedal position (BPP) sensor is used to sense the action of the driver application of the brake pedal.

The BPP sensor provides an analog voltage signal that will increase as the brake pedal is applied. The body control module (BCM) provides a low reference signal and a 5-volt reference voltage to the BPP sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM will apply battery voltage to the left and right stop lamp control circuits as well as the center high mounted stop lamp (CHMSL) control circuit illuminating the left and right stop lamps and the CHMSL.

Conditions for Running the DTC

• Battery voltage must be between 9-16 V.
• Brakes APPLIED.

Conditions for Setting the DTC

DTC C0277 06

• The BCM detects a short to ground or an open/high resistance in the BPP sensor 5 V reference circuit.
• The BCM detects a short to ground or an open/high resistance in the BPP sensor signal circuit.

DTC C0277 07

• The BCM detects a short to voltage in the BPP sensor 5 V reference circuit.
• The BCM detects a short to voltage in the BPP sensor signal circuit.
• The BCM detects an open/high resistance in the BPP sensor low reference circuit.

DTC C0277 09

The BCM detects the BPP sensor signal is changing faster than possible under normal operating conditions.

DTC C0277 4B

The DTC will set when the BPP sensor home position is not learned.

DTC C0890 03

The BCM detects a short to ground in the BPP sensor 5 V reference circuit.

DTC C0890 07

• The BCM detects a short to voltage in the BPP sensor 5 V reference circuit.
• The BCM detects a short to voltage in the BPP sensor low reference circuit

Actions Taken When the DTC Sets

• The Traction Control indicator is commanded ON.
• For DTC C0277 4B, the stop lamps may not activate at the expected brake pedal positions.

Conditions for Clearing the DTC

• The condition responsible for setting the DTC no longer exists.
• For DTC C0277 07 the ignition must be cycled before the code can be cleared.
• For DTC C0277 4B a successful brake pedal position sensor calibration has been performed.
• A history DTC will clear once 50 malfunction-free ignition cycles have occurred.
• A DTC will not clear the current status until the next ignition cycle.

Reference Information

Schematic Reference

Exterior Lights Schematics (Encore) , Exterior Lights Schematics (Trax)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - TRAX

Description and Operation

Exterior Lighting Systems Description and Operation

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

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