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Home >> Hummer >> 2009 >> H3 Base, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC C0244 or P1689 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector X3 at the ECM.
  2. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal 12 and ground.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
  3. If the circuits test normal, replace the ECM.
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