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Home >> Cadillac >> 2007 >> STS V >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> Door Ajar Indicator Malfunction >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the suspect door latch assembly.
  2. Ignition OFF, test for less than 1 ohm of resistance between the ground circuit and ground.
    • If greater than 1 ohm, test the ground circuit for an open/high resistance.
  3. Ignition ON, scan tool installed, verify that the Door Ajar Switch parameter in the Door Data List is Door Closed.
    • If not, test the door ajar switch signal circuit for a short to ground. If the circuit tests normal, replace the suspect door control module.
  4. Ignition ON, install a 3 Amp fused jumper wire between the door ajar switch signal circuit and ground. Verify that the Door Ajar Switch parameter in the Door Data List is Door Ajar.
    • If not, test the door ajar switch signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the suspect door control module.
  5. If all circuits tests normal, replace the suspect door latch assembly.
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