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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the inside rearview mirror.
  2. Ignition ON, test for less than 1 volt at the keypad signal terminal 11.
    • If greater than specified value, test the circuit for short to voltage. If the circuit tests normal, test or replace the VCIM.
  3. Test for less than 1 ohm of resistance between the VCIM and inside rearview mirror.
    • If greater than specified value, test the circuit for open/high resistance or for short to ground.
  4. If the circuit tests normal, test or replace the inside rearview mirror.
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