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Home >> Hummer >> 2010 >> H3 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Antilock Brake System With Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0220-C0229 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 GMC Canyon and 2010 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the EBCM.
  2. Test for less than 5 ohms of resistance between the ground circuit terminals listed below and ground.
    • Terminal 16
    • Terminal 29
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the Pump Motor supply voltage circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit ABS 2 fuse is open test or replace the brake pressure modulator valve (BPMV).
  4. Connect the harness connector at the EBCM.
  5. Ignition ON, use the scan tool to perform the ABS Motor test.
    • If the motor test failed, replace the EBCM.
  6. If all circuits test normal, replace the BPMV.
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