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Home >> Saturn >> 2009 >> Vue Red Line, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 260 (Computer/Integrating Systems) >> Diagnostic Information and Procedures >> Retained Accessory Power (RAP) Malfunction >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: If any door open switch input to the BCM is reporting a door open when it is not the RAP function will not operate after the key is turned off or removed and the courtesy lamps will remain on longer than 30 seconds after exiting the vehicle and closing all doors. Before continuing diagnosis, ensure that the courtesy lamps turn off properly after closing all doors. If courtesy lamps remain on, refer to Symptoms - Lighting Systems .
  1. Ignition OFF, remove the RAP relay.
  2. Test for less than 1 ohm of resistance between the relay coil ground circuit and ground.
    • If greater than 1 ohm, repair the ground circuit for an open/high resistance.
  3. Connect a test lamp between the RAP relay control circuit and ground. Close all vehicle doors.
  4. Observe the test lamp, cycle the ignition key to the RUN position and back to the OFF position, wait 10 seconds, open the driver door. The test lamp should turn ON when key is in RUN and remain on until the driver door is opened.
    • If the test lamp remains ON all the time, test for a short to voltage on the relay coil control circuit. If the circuit tests normal, replace the BCM.
    • If the test lamp remains OFF all the time, test for a short to ground or open/high resistance on the relay coil control circuit. If the circuit tests normal, replace the BCM.
  5. If all circuits test normal, test or replace the RAP relay.
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