GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Canyon Pickup - 2WD 🢒 Brakes 🢒 Antilock Brake System 🢒 DTC C0287

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 C0287 00: Longitudinal Accelerometer Sensor Circuit

Circuit/System Description

The longitudinal accelerometer and the yaw rate sensors are combined into one sensor external to the electronic brake control module (EBCM). The vehicle stability enhancement system (VSES) uses the longitudinal accelerometer input when calculating the desired yaw rate. The usable output signal is a serial data CAN circuits.

Conditions for Running the DTC

The ignition switch is in the ON position.

Conditions for Setting the DTC
    • The yaw/longitudinal combination sensor reports an internal failure.
    • calculated offset of yaw/longitudinal combination sensor signal is out of the specified range

Action Taken When the DTC Sets

One or more of the following actions may occur:

    • VSES are disabled.
    • A DIC message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC
    • The condition for the DTC is no longer present.
    • The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

Possible causes of this DTC are as follows:

    • Incorrectly mounted/loose yaw/longitudinal sensor
    • Internal failure in the yaw/longitudinal sensor

Reference Information

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation Reference

ABS Description and Operation

Electrical Information Reference

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

Scan Tool Reference

Control Module References for Scan Tool Information

Circuit/System Testing
  1. Verify DTC C0186 or C0196 is not set.
    2. ⇒If either of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle
  2. Replace the yaw/longitudinal sensor

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Longitudinal Accelerometer Replacement
    •  Control Module References for EBCM replacement, setup and/or programming