Premium Audio

POWER SUPPLY AND GROUND CIRCUIT

MICROPHONE : Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Premium Audio System.

1. CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)

1.Turn ignition switch ON.
2.Check voltage between microphone harness connector R15 terminal 4 and ground.





Is voltage reading as specified?
YES- GO TO 3
NO- GO TO 2

2. CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

1.Turn ignition switch OFF.
2.Disconnect microphone and Bluetooth(R) control unit harness connectors.
3.Check continuity between microphone harness connector R15 terminal 4 and Bluetooth(R) control unit harness connector B33 terminal 29.





4.Check continuity between microphone harness connector R15 terminal 4 and ground.





Are the continuity results as specified?
YES- Replace the Bluetooth(R) control unit. Refer to "Removal and Installation" Premium Audio.
NO- Repair harness or connector.

3. CHECK GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect microphone harness connector R15 and Bluetooth(R) control unit harness connector B33.
3.Check continuity between microphone harness connector R15 terminal 2 and Bluetooth(R) control unit harness connector B33 terminal 8.





Does continuity exist?
YES- Inspection End.
NO- Repair harness or connector.