Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to WIRING DIAGRAM (Bose Audio w/Navi w/o Surround) or WIRING DIAGRAM (Bose Audio w/Navi and Surround).
- CHECK FUSE
Check that the following fuses are not blown.
Terminal No. Signal name Fuse No. 1 Battery power supply 15 (15A) 3 ACC power supply 65 (10A) 4 Ignition signal 29 (5A) Are the fuses blown?
YES
Replace the blown fuse after repairing the affected circuit.
NO
GO TO STEP 2 .
- CHECK POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect TCU connector M47.
- Check voltage between TCU connector and ground.
TCU Ground Condition Voltage
(Approx.)Connector Terminal M47 1 - Ignition switch: OFF Battery voltage 3 Ignition switch: ACC 4 Ignition switch: ON
Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Repair or replace harness or connectors.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF.
- Check continuity between TCU connector M47 and ground.
TCU Ground Continuity Connector Terminal M47 2 - Yes 7
Is the inspection result normal?
YES
Inspection End.
NO
Repair or replace harness or connectors.