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Home >> Hummer >> 2007 >> H3 Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System With TCS & VSES >> Diagnostic Information and Procedures >> Traction Off Indicator Inoperative >> Circuit/System Testing
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Circuit/System Testing

Note: Diagnose all vehicle DTCs before using this diagnostic.

  1. With the scan tool, select instrument panel special functions Lamp Test. Command the instrument panel warning lamps ON.
    • If the ABS warning lamp does not turn on, replace the IPC.
  2. Turn the ignition OFF. Disconnect the traction control switch harness connector. Turn the ignition ON. Touch and release a 3-amp fused jumper wire between ground and the Traction Control System (TCS) switch signal circuit.
    • If the traction off indicator illuminates, replace the traction control switch.
  3. Disconnect the body control module (BCM) harness connector. Touch and release a 3-amp fused jumper wire between ground and the TCS switch signal circuit at the BCM.
    • If the traction off indicator illuminates, repair an open in the TCS switch signal circuit.
    • If the traction off indicator does not illuminate replace the BCM.
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