Diagnosis Procedure
WARNING: This page is about a different car, the 2010 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 AV CONTROL UNIT AND MICROPHONE
- Turn ignition switch OFF.
- Disconnect AV control unit connector and microphone connector.
- Check continuity between AV control unit harness connector M165 (A) and microphone harness connector R109 (B).CONTINUITY CHART
A B Continuity Connector Terminal Connector Terminal M165 72 R109 1 Yes 71 2 70 4 - Check continuity between AV control unit harness connector M165 (A) and ground.CONTINUITY CHART
A - Continuity Connector Terminal M165 70 Ground No 71 72 Are the continuity test results as specified?
YES: GO TO 2.
NO: Repair harness or connector.
- CHECK MICROPHONE POWER SUPPLY
- Connect AV control unit connector and microphone connector.
- Turn ignition switch ON.
- Check voltage between microphone harness connector R109 terminal 4 and ground.VOLTAGE SPECIFICATION
(+) (-) Voltage (approx) Connector Terminal R109 4 Ground 5V Courtesy of NISSAN MOTOR CO., U.S.A.
Is voltage reading approx. 5 volts?
YES: GO TO 3.
NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".
- CHECK MICROPHONE SIGNAL
Check signal between AV control unit harness connector M165 terminals 71 and 72.
SIGNAL REFERENCEConnector (+) (-) Reference signal Terminal Terminal M165 72 71 While speaking into MIC Courtesy of NISSAN MOTOR CO., U.S.A.
Are voltage readings as specified?
YES: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".
NO: Replace microphone. Refer to "REMOVAL AND INSTALLATION ".