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 FUSE
Check for blown fuse.
Power source
Fuse No.
Capacity
Battery
15
15 A
Is the fuse blown?
YES
Replace the blown fuse after repairing the affected circuit.
NO
GO TO 2.
- CHECK HEADREST DISPLAY UNIT POWER SUPPLY CIRCUIT
Check voltage between headrest display unit harness connector and ground.
Headrest display unit LHProbe
Reference value
(Approx.)
+
-
Headrest display unit LH
Connector
Terminal
B252
1
Ground
Battery voltage
7
Headrest display unit RHProbe
Reference value
(Approx.)
+
-
Headrest display unit RH
Connector
Terminal
B377
1
Ground
Battery voltage
7
Is the inspection result normal?
YES
GO TO 3.
NO
Repair headrest display unit power supply circuit.
- CHECK HEADREST DISPLAY UNIT GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect headrest display unit connector.
- Check for continuity between headrest display unit harness connector and ground.Headrest display unit LH
Headrest display unit LH
Ground
Continuity
Connector
Terminal
B252
2
Yes
8
Headrest display unit RHHeadrest display unit RH
Ground
Continuity
Connector
Terminal
B377
2
Yes
8
Is the inspection result normal?
YES
Inspection End.
NO
Repair headrest display unit ground circuit.