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Circuit/System Testing

  1. Disconnect the harness connector at the radio antenna.
  2. Ignition OFF, test for less than 10 ohms between the terminal 3 outer shield and ground.
    • If greater than the specified range, test the antenna coax shield for an open/high resistance. If the coax tests normal, replace the VCIM.
  3. Ignition ON, test the terminal 3 center terminal for 0.5-1.0 volts.
    • If greater than the specified range, test the antenna coax center terminal for a short to voltage. If the coax tests normal, replace the VCIM.
    • If less than the specified range, test the antenna coax center terminal for a short to ground or an open/high resistance. If the coax tests normal, replace the VCIM.
  4. If all circuits test normal, replace the antenna.
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