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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 942 (Anti-Lock Brake System) >> Diagnostic Information and Procedures >> DTC C0287: Delivered Torque Circuit; P1644: Delivered Torque Output Circuit; P1689: Traction Control Delivered Torque Circuit >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 3.  This step tests for voltage supplied to the PCM from the EBCM.
  2. 9.  The PCM may be damaged if the delivered torque signal circuit is shorted to voltage.
Fig 1: DTC C0287, P1644 Or P1689 Table (Steps 1-5)
G01706137Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC C0287, P1644 Or P1689 Table (Steps 6-12)
G01706138Courtesy of GENERAL MOTORS CORP.
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