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Home >> Hummer >> 2008 >> H3 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 204 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC P0703 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Fix any Brake System related DTCs or symptoms before using this diagnostic.
  • This DTC may be stored as a history DTC without affecting the operation of the ECM. Do not replace the BCM or ECM if this DTC is stored only as a history DTC and is not retrieved as a current DTC.
  1. Ignition ON, perform the brake pedal position (BPP) sensor calibration procedure and verify the BPP is calibrated properly. Refer to Brake Pedal Position Sensor Calibration .
    • If the BPP will not calibrate properly, replace the BPP.
  2. Cycle the ignition, apply and release the brake pedal. Using a scan tool, check for DTC P0703 in the ECM.
    • If DTC P0703 sets as current in the ECM, replace the ECM.
    • If DTC P0703 does not set in the ECM, the system is OK.
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