Diagnosis Procedure
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FUSES
- Turn ignition switch OFF.
- Check that the following fuses are not blown (open)
Power source
Fuse No.
Capacity
Battery
#15
15 A
Ignition switch ACC
#65
10 A
Are the fuses blown (open)?
YES
Replace fuse after repairing the applicable circuit.
NO
GO TO 2.
- CHECK AV CONTROL UNIT BATTERY POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect AV control unit harness connector.
- Check the voltage between AV control unit harness connector and ground.
Terminals
Voltage
(Approx.)
(+)
(-)
AV control unit
Connector
Terminal
M161
19
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 3.
NO
Perform trouble diagnosis for battery power supply circuit.
- CHECK AV CONTROL UNIT ACCESSORY POWER SUPPLY
- Turn ignition switch ACC.
- Check the voltage between AV control unit harness connector and ground.
Terminals
Voltage
(Approx.)
(+)
(-)
AV control unit
Connector
Terminal
M161
7
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 4.
NO
Perform trouble diagnosis for accessory power supply circuit.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF.
- Check the continuity between AV control unit and ground.
Terminals
Continuity
(+)
(-)
AV control unit
Connector
Terminal
M161
20
Ground
Yes
Is the inspection result normal?
YES
Inspection End.
NO
Repair or replace malfunctioning parts.