Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the cellular microphone.
- Test for less than 10 Ω between the drain circuit terminal 2 and ground.
- If greater than the specified range, test the circuit for an open/high resistance.
- Ignition ON, test for 9.5-10.5 V between the signal circuit terminal 3 and ground.
- If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the CIM.
- If less than the specified range, test the signal for a short to ground or an open/high resistance. If the circuit tests normal, replace the CIM.
- If all circuits test normal, replace the cellular microphone.