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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 212 (Hybrid Engine Electrical System) >> Diagnostic Information & Procedures >> DTC C0895 (ESC) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector of the ESC module.
  2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 ohms between the ground circuit terminal 47 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Verify that a test lamp illuminates between the 12V B+ circuit terminal 32 of the ESC module and ground.
    • If the test lamp does not illuminate, test the 12V B+ circuit for a short to ground or an open/high resistance.
  4. If all circuits test normal, replace the ESC module.
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