Diagnosis Procedure
WARNING: This page is about a different car, the 2018 Infiniti Q60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FUSE
- Turn ignition switch OFF.
- Check that the following fuse is not blown (open).VR30DDTT engine
Power source
Fuse No.
Capacity
Ignition switch ON
#14
5 A
2.0L turbo gasoline enginePower source
Fuse No.
Capacity
Ignition switch ON
#77
10 A
Is the fuse blown (open)?
YES
Replace fuse after repairing the applicable circuit.
NO
GO TO 2.
- CHECK IGNITION POWER SUPPLY CIRCUIT
- Turn ignition switch ON.
- Check the voltage between sonar control unit harness connector and ground.
Terminals
Voltage
(+)
(-)
Sonar control unit
Connector
Terminal
M76
12
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 3.
NO
Repair sonar control unit power supply harness.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect sonar control unit harness connector.
- Check the continuity between sonar control unit harness connector and ground.
Terminals
Continuity
(+)
(-)
Sonar control unit
Connector
Terminal
M76
15
Ground
Existed
Is the inspection result normal?
YES
INSPECTION END
NO
Repair sonar control unit ground harness.