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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 318 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> Door Ajar Indicator Malfunction >> Circuit/System Testing

Circuit/System Testing

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Driver Door Ajar Malfunction

  1. Ignition OFF, disconnect the harness connector at the driver door latch.
  2. Test for less than 5 ohms between the low reference circuit terminal 8 and ground.
    • If greater than the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the DDS.
  3. Ignition ON, verify the scan tool Driver Door Ajar Sw parameter and is Inactive.
    • If not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the DDS.
  4. Install a 3A fused jumper wire between the signal circuit terminal 6 and ground, verify the scan tool Driver Door Ajar Sw parameter is Active.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the DDS.
  5. If all circuits test normal, test or replace the driver door latch.

Passenger Door Ajar Malfunction

  1. Ignition OFF, disconnect the harness connector at the passenger door latch.
  2. Test for less than 25 ohms between the low reference circuit terminal 3 and ground.
    • If greater than the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PDS
  3. Ignition ON, verify the scan tool Passenger Door Ajar Sw parameter and is Inactive.
    • If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the PDS.
  4. Install a 3A fused jumper wire between the signal circuit terminal 1 and ground, verify the scan tool Passenger Door Ajar Sw parameter is Active.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PDS.
  5. If all circuits test normal, test or replace the passenger door latch.

Rear Door Ajar Malfunction

  1. Ignition OFF, disconnect the harness connector at the appropriate rear door latch.
  2. Test for less than 15.0 ohms between the ground circuit terminal listed below and ground:
    • Left rear door latch ground circuit terminal 6
    • Right rear door latch ground circuit terminal 3
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify the scan tool Rear Door Ajar Sw parameter is Door Closed.
    • If not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the BCM;
    • Left rear door latch signal circuit terminal 4
    • Right rear door latch signal circuit terminal 1
  4. Install a 3A fused jumper wire between the signal circuit terminal and the ground circuit terminal listed below, verify the scan tool Rear Door Ajar Sw parameter is Door Ajar;
    • LR door latch signal circuit terminal 4 and ground circuit terminal 6
    • RR door latch signal circuit terminal 1 and ground circuit terminal 3
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
  5. If all circuits test normal, test or replace the door latch.
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