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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the inside rearview mirror.
  2. Test for greater than 1 ohm between the keypad supply voltage terminal 12 and ground.
    • If less than specified value, repair short to ground or replace the VCIM.
  3. Ignition ON, test for 9.8-10.2 volts between keypad supply voltage terminal 12 and ground.
    • If less than the specified range, repair open circuit or replace the VCIM.
    • If greater than the specified range, repair short to voltage or replace the VCIM.
  4. If the circuit tests normal, replace the inside rearview mirror.
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