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POWER SUPPLY AND GROUND CIRCUIT (SEDAN)

MICROPHONE : Diagnosis Procedure

Regarding Wiring Diagram information, Sedan.

1. CHECK POWER SUPPLY CIRCUIT






Check voltage between microphone harness connector R7 terminal
4 and ground.





Is approximately 5V present?
YES- GO TO 3.
NO- GO TO 2.


2. CHECK POWER SUPPLY CIRCUIT (CONTINUITY)






1.Turn ignition switch OFF.
2.Disconnect microphone and AV control unit harness connectors.
3.Check continuity between microphone harness connector R7
(A) terminal 4 and AV control unit harness connector M102 (B) terminal 44.





4.Check continuity between microphone harness connector R7
(A) terminal 4 and ground.





Are the continuity test results as specified?
YES- Replace the AV control unit. Service and Repair.
NO- Repair harness or connector.

3. CHECK GROUND CIRCUIT






1.Turn ignition switch OFF.
2.Disconnect microphone harness connector R7 and AV control unit harness connector M102.
3.Check continuity between microphone harness connector R7
(A) terminal 2 and AV control unit harness connector M102 (B) terminal 43.





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