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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 B153B >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF, disconnect the X3 harness connector at the LGM.
  2. Ignition ON, verify the scan tool LGM Full Open Switch parameter is Inactive.
    • If not the specified value, replace the LGM.
  3. Liftgate OPEN, test for less than 1 ohm between the signal circuit terminal 5 and the ground circuit terminal 6.
    • If greater than the specified range, replace the liftgate motor assembly.
  4. Liftgate CLOSED, test for infinite resistance between the signal circuit terminal 5 and the ground circuit terminal 6.
    • If less than the specified value, replace the liftgate motor assembly.
  5. If all circuits test normal, replace the LGM.
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