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Circuit/System Testing

  1. Ignition OFF, disconnect the inside rear view mirror harness connector.
  2. Ignition ON, test for less than 9.5 volts at the cellular signal circuit terminal 10.
    • If greater than the specified value, repair short to voltage.
  3. Ignition OFF, test for greater than 1 ohm between the cellular signal circuit terminal 10 and ground.
    • If less than specified value, repair short to ground.
  4. Disconnect C3 VCIM harness connector.
  5. Test for less than 1 ohm of resistance between the inside rear view mirror harness connector terminal 2 and VCIM harness connector terminal 10.
    • If greater than the specified value, repair open/high resistance.
  6. Test for less than 1 ohm of resistance between the inside rear view mirror harness connector terminal 10 and VCIM harness connector terminal 9.
    • If greater than the specified value, repair open/high resistance.
  7. If all circuits test normal, test or replace the inside rear view mirror.
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