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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 497 (Hybrid/EV Energy Storage System) >> Diagnostic Information and Procedures >> DTC P0ABB, P0ABC, or P0ABD >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTCs P0A95, P0C77, and P1A20 is not set.
  2. Verify that DTC P0ABD is not set.
    • If the DTC is set, replace the drive motor generator battery assembly. If the DTC resets, replace the drive motor generator battery control module.
  3. Ignition ON, engine OFF, observe the scan tool Hybrid Battery Pack Calculated and Hybrid Battery Terminal parameters. The readings should be between 169 and 408 V and should be within 50 V of each other.
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