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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 192 (Door Lock Systems & Door Handles) >> Diagnostic Information and Procedures >> DTC B396B >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF, disconnect the X3 harness connector at the LGM.
  2. Test for less than 15 ohms between the control terminal 4 at the LGM and ground.
    • If greater than the specified range, replace the LGM.
  3. Test for less than 15 ohms between the control terminal 3 at the LGM and ground.
    • If greater than the specified range, replace the LGM.
  4. Test for 9-10 ohms between the control circuit terminal 3 and control circuit terminal 4 at the liftgate motor assembly.
    • If less than the specified range, test either control circuit for a short to ground. If the circuits test normal, replace the liftgate motor assembly.
    • If greater than the specified range, test either control circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the liftgate motor assembly.
  5. If all circuits test normal, replace the liftgate motor assembly.
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