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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the B24 Cellular Phone Microphone.
  2. Ignition OFF, test for less than 10 Ω between outer shield and ground.
    • If greater than the specified range, test the outer shield circuit for an open/high resistance. If the circuit tests normal, replace the K82 Mobile Telephone Control Module.
  3. Ignition OFF, test for less than 10 Ω between low reference circuit terminal 2 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K82 Mobile Telephone Control Module.
  4. Ignition ON, test for 9-11 V between the signal circuit terminal 3 and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K82 Mobile Telephone Control Module.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K82 Mobile Telephone Control Module.
  5. If all circuits test normal, replace the B24 Cellular Phone Microphone.
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