Chevrolet Trax: DTC C0277: Brake pedal position sensor circuit calibration not learned
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 4B
Brake Pedal Position Sensor Circuit Calibration Not Learned
Circuit/System Description
When the brake pedal is applied, the body control module sends a serial data
message to the electronic brake
control module in reference to the brake pedal positions. The electronic brake
control module compares the
correlation between the brake pedal position and the amount of brake pressure it
senses from the brake pressure
sensor, which is internal to the brake pressure modulator. It uses this
information to control the vehicle during
an stability control event
Conditions for Running the DTC
- Brakes Applied.
- Battery voltage must be between 9-16 V.
Conditions for Setting the DTC
- The body control module sends invalid brake pedal position data to the
electronic brake control module.
- The DTC may set in the body control module and/or electronic brake
control module, when the brake
pedal position sensor home position is not learned.
Actions Taken When the DTC Sets
- The ABS indicator is commanded ON.
- The red brake indicator is commanded ON.
- The stop lamps may not activate at the expected brake pedal positions.
- The traction/stability control indicator turns ON, if equipped with
electronic stability control.
Conditions for Clearing the DTC
- The condition responsible for setting the DTC no longer exists.
- A DTC will not clear the current status until the next ignition cycle.
- A successful brake pedal position sensor calibration has been performed.
- A history DTC will clear once 40 malfunction-free ignition cycles have
occurred
Reference Information
Schematic Reference
- Antilock Brake System Schematics(Encore), Antilock Brake System
Schematics (Trax)
- 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
- ABS 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 Verification
- Verify DTC C0277 is not set in the K9 Body Control Module
If DTC is set
Refer to DTC C0277 or C0890 .
If DTC is not set
- Ignition ON
- Verify the scan tool Body Control Module Brake Pedal Position Sensor
Learned Released Position is
YES.
If the released position is not YES
Perform the Brake Pedal Position Sensor Learn. Refer to Brake Pedal Position
Sensor
Calibration .
If the released position is YES
- Verify the DTC does not set while operating the vehicle within the
Conditions for Running the DTC.
If the DTC sets
Replace the K17 Electronic Brake Control Module.
If the DTC does not set
- All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for Electronic Brake Control Module replacement,
programming and setup
READ NEXT:
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.
Diag
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.
Diag
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.
Diag
SEE MORE:
Special Tools
CH-45859 Axle Remover
For regional equivalent tools, refer to Special Tools.
Removal Procedure
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
.
Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and
Installation .
Fig. 30: Removing St
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
DT