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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Mirror System) >> Diagnostic Information and Procedures >> DTC B1544, B1600, or B1605 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the X1 harness connector at the appropriate outside rearview mirror.
  2. Connect a test lamp between the control circuit terminal 9 and the control circuit terminal 10.
  3. Ignition ON, command the mirror LEFT and RIGHT with a scan tool. The test lamp should turn ON when commanding the LEFT and RIGHT states.
    • If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on either control circuits. If the circuits test normal, replace the door module.
  4. Connect a test lamp between the control circuit terminal 11 and the control circuit terminal 10.
  5. Ignition ON, command the mirror LEFT and RIGHT with a scan tool. The test lamp should turn ON when commanding the LEFT and RIGHT states.
    • If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on either control circuits. If the circuits test normal, replace the door module.
  6. If all circuits test normal, test or replace the outside rearview mirror motor.
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