Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect front auxiliary input jacks connector and AV control unit connector.

Check continuity between front auxiliary input jacks harness connector and AV control unit harness connector.

CONTINUITY SPECIFICATION

Front auxiliary input jacks		AV control unit		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M139	7	M209	26	Existed

Check continuity between front auxiliary input jacks harness connector and ground.

CONTINUITY SPECIFICATION

Front auxiliary input jacks		Ground	Continuity
Connector	Terminal
M139	7		Not existed

Is the inspection result normal?

YES: Go to 2.

NO: Repair harness or connector.

CHECK AUX IMAGE SIGNAL

Connect front auxiliary input jacks connector and AV control unit connector.
Turn ignition switch ON.

Check signal between front auxiliary input jacks harness connector and ground.

SIGNAL REFERENCE

(+)		(-)	Condition	Reference value
Front auxiliary input jacks
Connector	Terminal
M139	7	Ground	At front AUX image is displayed.	Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal?

YES: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".

NO: Check that there is no malfunction in the external device.