Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to WIRING DIAGRAM .
- CHECK MICROPHONE SIGNAL CIRCUIT CONTINUITY
- Turn ignition switch OFF.
- Disconnect Bluetooth® control unit connector B3 and microphone connector.
- Check continuity between Bluetooth®
control unit connector B3 terminals 7, 8, 29 and microphone connector R109 terminals 4, 3, 1.
Bluetooth® control unit Microphone Continuity Connector Terminal Connector Terminal B3 7 R109 4 Yes 8 3 29 1 - Check continuity between Bluetooth®
control unit connector B3 terminals 7, 8, 29 and ground.
Bluetooth® control unit Ground Continuity Connector Terminal B3 7 - No 8 29
Is inspection result normal?
YES
GO TO STEP 2 .
NO
Repair or replace harness or connectors.
- CHECK MICROPHONE VCC VOLTAGE
- Connect Bluetooth® control unit connector B3.
- Turn ignition switch ON.
- Check voltage between terminals of Bluetooth®
control unit connector B3.
Bluetooth® control unit connector B3 Voltage
(Approx.)(+) (-) Terminal Terminal 29 8 5.0 V
Is the inspection result normal?
YES
GO TO STEP 3.
NO
Replace Bluetooth® control unit. Refer to REMOVAL AND INSTALLATION .
- CHECK MICROPHONE SIGNAL
- Connect microphone connector.
- Check signal between terminals of Bluetooth®
control unit connector B3.
Bluetooth® control unit connector B3 Condition Reference value (+) (-) Terminal Terminal 7 8 Speak into microphone.
Is the inspection result normal?
YES
Replace Bluetooth® control unit. Refer to REMOVAL AND INSTALLATION .
NO
Replace microphone. Refer to REMOVAL AND INSTALLATION .