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Circuit/System Testing

  1. Ignition OFF. Disconnect the harness connector at the cellular microphone and the harness connector C2 at the VCIM.
  2. Test for less than 1 ohm of resistance between terminal A and terminal 10.
    • If greater than the specified value, test the drain wire circuit for an open/high resistance.
  3. Reconnect the harness connector C2 at the VCIM.
  4. Ignition ON, test for less than 9.5 volts at the signal circuit terminal B.
    • If greater than the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the VCIM.
  5. If all circuits test normal, test or replace the cellular microphone.
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