Diagnosis Procedure
WARNING: This page is about a different car, the 2013 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".
- CONNECTOR CHECK
Check the AV control unit, audio amplifier and tweeter connectors for the following:
- Proper connection
- Damage
- Disconnected or loose terminals
Is the inspection result normal?
YES: GO TO 2
NO: Repair the terminals or connectors.
- CHECK FRONT TWEETER SIGNAL CIRCUIT CONTINUITY
- Disconnect audio amplifier connector B159 and suspect front tweeter connector.
- Check continuity between audio amplifier connector B159 and suspect front tweeter connector.
Audio amplifier Front tweeter Continuity Connector Terminal Connector Terminal B159 14 M109 (LH) 1 Yes 30 2 13 M111 (RH) 1 29 2 - Check continuity between audio amplifier connector B159 and ground.
Audio amplifier Ground Continuity Connector Terminal B159 14 - No 30 13 29 Is the inspection result normal?
YES: GO TO 3
NO: Repair or replace harness or connectors.
- CHECK FRONT TWEETER SIGNAL
- Connect audio amplifier connector B159 and suspect front tweeter connector.
- Turn ignition switch to ACC.
- Push AV control unit POWER switch.
- Check signal between the terminals of audio amplifier connector B159.
Audio amplifier connector B159 Condition Reference value (+) (-) Terminal Terminal 14 30 Audio signal output 13 29 Is the inspection result normal?
YES: Replace front tweeter. Refer to "REMOVAL AND INSTALLATION ".
NO: GO TO 4.
- CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY
- Disconnect AV control unit connector M96 and audio amplifier connector B159.
- Check continuity between AV control unit connector M96 and audio amplifier connector B159.
AV control unit Audio amplifier Continuity Connector Terminal Connector Terminal M96 2 B159 22 Yes 3 6 11 21 12 5 - Check continuity between AV control unit connector M96 and ground.
AV control unit Ground Continuity Connector Terminal M96 2 - No 3 11 12 Is the inspection result normal?
YES: GO TO 5.
NO: Repair or replace harness or connectors.
- CHECK PRE-AMP SIGNAL
- Connect AV control unit connector M96 and audio amplifier connector B159.
- Turn ignition switch to ACC.
- Push AV control unit POWER switch.
- Check signal between the terminals of AV control unit connector M96.
AV control unit connector M96 Condition Reference value (+) (-) Terminal Terminal 2 3 Audio signal output 11 12 Is the inspection result normal?
YES: Replace audio amplifier. Refer to "REMOVAL AND INSTALLATION ".
NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".