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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1626 (Door Lock System And Door Handles) >> Diagnostic Information and Procedures >> DTC B2991 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the appropriate passenger door latch.
  2. With the switch in the open position, test for infinite resistance between the signal terminal and the ground terminal listed below:
    • Front passenger door latch signal terminal 1 and ground terminal 3
    • Right rear door latch signal terminal 1 and ground terminal 3
    • Left rear door latch signal terminal 4 and ground terminal 6
    • If not the specified value, replace the door latch.
  3. With the switch in the closed position, test for less than 2 ohms between the signal and the ground terminals listed below:
    • Front passenger door latch signal terminal 1 and ground terminal 3
    • Right rear door latch signal terminal 1 and ground terminal 3
    • Left rear door latch signal terminal 4 and ground terminal 6
    • If not the specified value, replace the passenger door latch.