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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 332 (Antilock Brake System - Hybrid (Hp2)) >> Diagnostic Information and Procedures >> DTC C0161 or C127D >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
  2. Test for infinite resistance between the signal terminal A and the ignition terminal B with the switch in the open position.
    • If not the specified value, replace the stop lamp switch.
  3. Test for less than 1.0 ohms between the signal terminal A and the ignition terminal B with the switch in the closed position.
    • If greater than the specified range, replace the stop lamp switch.
  4. Install a 3A fused jumper wire between the signal circuit terminal A and the ignition circuit terminal B. Verify the scan tool EBCM Brake Switch Status is Applied.
    • If greater than the specified range, replace the stop lamp switch.
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