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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Door Lock Systems & Door Handles) >> Diagnostic Information and Procedures >> DTC B153B >> Circuit/System Testing

Circuit/System Testing

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  1. Disconnect the liftgate control module connector C3.
  2. Ignition ON, verify that battery voltage is present between the full open switch signal circuit and low reference circuit terminals in the liftgate control module.
    • If battery voltage is not present, replace the liftgate control module.
  3. If the circuits test normal, replace the liftgate motor assembly.
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