Diagnosis Procedure
WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to the appropriate Wiring Diagram .
- CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND BOSE SPEAKER AMP.
- Turn ignition switch OFF.
- Disconnect AV control unit connector M43 and audio amp. connector M113.
- Check continuity between AV control unit connector M43 and audio amp. connector M113.
AV control unit
Audio amp.
Continuity
Connector
Terminal
Connector
Terminal
M43
1
M113
9
Yes
- Check continuity between AV control unit connector M43 and ground.
AV control unit
Ground
Continuity
Connector
Terminal
M43
1
-
No
Is the inspection result normal?
YES
GO TO 2 .
NO
Repair or replace harness or connectors.
- CHECK AV CONTROL UNIT VOLTAGE
- Connect AV control unit connector M43.
- Turn ignition switch ON.
- Check voltage between AV control unit connector M43 and ground.
AV control unit
Ground
Voltage
(Approx.)
(+)
Connector
Terminal
M43
1
-
Battery voltage
Is the inspection result normal?
YES
Replace audio amp. Refer to Removal and Installation .
NO
Replace AV control unit. Refer to Removal and Installation .