Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and front display unit connector.
3. Check continuity between AV control unit harness connector and front display unit harness connector.

   AV control unit		Front display unit		Continuity
   Connector	Terminal	Connector	Terminal
   M193	67	M155	19	Existed
   	68		18

4. Check continuity between AV control unit harness connector and ground.

   AV control unit		Ground		Continuity
   Connector	Terminal
   M193	67			Not existed
   	68

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair harness or connector.

1. Connect AV control unit connector and front display unit connector.
2. Turn ignition switch ON.
3. Check signal between front display unit harness connector.

   Probe				Condition	Standard	Reference value
   (+)		(+)
   Front display unit
   Connector	Terminal	Connector	Terminal
   M155	18	M155	19	When DVD, USB or AUX image is displayed.	Waveform according to composite image is input.	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES 

Replace front display unit. Refer to REMOVAL AND INSTALLATION .

NO 

Replace AV control unit. Refer to REMOVAL AND INSTALLATION .