2010 Cadillac CTS Sedan AWD V6-3.6L Page 697

2010 Cadillac CTS Sedan AWD V6-3.6L Page 697

- Brake Pedal Position Sensor Circuit Voltage Above Threshold

DTC C0277 09

- Brake Pedal Position Sensor Circuit Rate of Change Above Threshold

DTC C0277 4B

- Brake Pedal Position Sensor Calibration Not Learned

DTC C0890 03

- Device Voltage Reference Output 3 Circuit Voltage Below Threshold

DTC C0890 07

- Device Voltage Reference Output 3 Circuit Voltage Above Threshold

Diagnostic Fault Information

Circuit/System Description

North America

The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position 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 V

reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied,

the BCM will apply battery voltage to the right and left stop lamp control circuits, transmission control module (TCM), engine control module

(ECM), and center high mounted stop lamp (CHMSL) control circuit.

European

The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position 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 V

reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied,

the BCM will apply battery voltage to stop lamp relay coil side control circuit, transmission control module (TCM), engine control module (ECM),

and center high mounted stop lamp (CHMSL). When the stop lamp relay receives battery voltage from the BCM, the relay coil is energized and the

stop lamp relay switch contacts close applying battery voltage from the STOP LAMPS fuse to illuminate the rear stop lamps and trailer stop lamps.

Conditions for Running the DTC

* Battery voltage must be between 9-16 V.