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.
For Wiring Diagram information, refer to appropriate wiring diagram.
- CHECK FUSE
Check that the following fuses are not blown.
Terminal No.
Signal name
Fuse No.
7
ACC power supply
25 (5A)
19
Battery power supply
15 (20A)
Are the fuses blown?
YES
Replace the blown fuse after repairing the affected circuit.
NO
GO TO 2 .
- CHECK POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect audio unit connector M171.
- Check voltage between audio unit connector M171 and ground.
Audio unit
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
M171
7
-
Ignition switch: ON
Battery voltage
19
Ignition switch: OFF
Is the inspection result normal?
YES
GO TO 3 .
NO
Repair or replace harness or connectors.
- CHECK GROUND CIRCUIT
Check continuity between audio unit connectors and ground.
Audio unit
Ground
Continuity
Connector
Terminal
M171
20
-
Yes
Is the inspection result normal?
YES
Inspection End.
NO
Repair or replace harness or connectors.