|
|
AV MICROPHONE SIGNAL CIRCUIT AV-265 < DTC/CIRCUIT DIAGNOSIS > [PREMIUM WITH NAVIGATION] C D E F G H I J K L M B A O P MICROPHONE SIGNAL CIRCUIT Description INFOID:0000000006166620 Voice signals are transmitted from the microphone to the Bluetooth control unit using the microphone signal circuits. Diagnosis Procedure INFOID:0000000006166621 Regarding Wiring Diagram information, refer to AV-285, "Wiring Diagram - With Navigation System" 1. CHECK HARNESS BETWEEN BLUETOOTH CONTROL UNIT AND MICROPHONE 1. Turn ignition switch OFF. 2. Disconnect Bluetooth control unit connector and microphone connector. 3. Check continuity between Bluetooth control unit harness con- nector B142 (A) and microphone harness connector R109 (B). 4. Check continuity between Bluetooth control unit harness connector B142 (A) and ground. Are the continuity test results as specified? YES >> GO TO 2. NO >> Repair harness or connector. 2. CHECK MICROPHONE POWER SUPPLY 1. Connect Bluetooth control unit connector and microphone con- nector. 2. Turn ignition switch ON. 3. Check voltage between microphone harness connector R109 terminal 4 and ground. Is voltage reading approx. 5 volts? YES >> GO TO 3. NO >> Replace Bluetooth control unit. Refer to AV-343, "Removal and Installation" 3. CHECK MICROPHONE SIGNAL A B Continuity Connector Terminal Connector Terminal B142 7 R109 1 Yes 8 2 29 4 A — Continuity Connector Terminal B142 7 Ground No 8 29 WKIA5795E (+) (-) Voltage (approx.) Connector Terminal R109 4 Ground 5V WKIA5796E |