Diagnosis Procedure
WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".
- CHECK HARNESS BETWEEN BLUETOOTH® CONTROL UNIT AND MICROPHONE
- Turn ignition switch OFF.
- Disconnect Bluetooth® control unit connector and microphone connector.
- Check continuity between Bluetooth® control unit harness connector B142 (A) and microphone harness connector R109 (B).
A B Continuity Connector Terminal Connector Terminal B142 7 R109 1 Yes 8 2 29 4 - Check continuity between Bluetooth® control unit harness connector B142 (A) and ground.
A - Continuity Connector Terminal B142 7 Ground No 8 29 Are the continuity test results as specified?
YES: GO TO 2.
NO: Repair harness or connector.
- CHECK MICROPHONE POWER SUPPLY
- Connect Bluetooth® control unit connector and microphone connector.
- Turn ignition switch ON.
- Check voltage between microphone harness connector R109 terminal 4 and ground.
(+) (-) Voltage (approx.) Connector Terminal R109 4 Ground 5V Courtesy of NISSAN NORTH AMERICA, INC.
Is voltage reading approx. 5 volts?
YES: GO TO 3.
NO: Replace Bluetooth® control unit. Refer to "REMOVAL AND INSTALLATION ".
- CHECK MICROPHONE SIGNAL
Check signal between Bluetooth® control unit harness connector B142 terminals 7 and 8 with CONSULT or and oscilloscope.
Connector (+) (-) Reference signal Terminal Terminal B142 7 8 While speaking into MIC Fig 3: Checking Signal Between Bluetooth Control Unit Harness Connector B142 Terminals 7 & 8 Using OscilloscopeCourtesy of NISSAN NORTH AMERICA, INC.
Are voltage readings as specified?
YES: Replace Bluetooth® control unit. Refer to "REMOVAL AND INSTALLATION ".
NO: Replace microphone. Refer to "REMOVAL AND INSTALLATION ".