Diagnosis Procedure

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

   Front display unit		AV control unit		Continuity
   Connector	Terminal	Connector	Terminal
   M156	8	M184	38	Existed

4. Check continuity between front display unit harness connector and ground.

   Front display unit		Ground	Continuity
   Connector	Terminal
   M156	8		Not existed

Is the inspection result normal?

YES 

GO TO STEP 2. 

NO 

Repair harness or connector.

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

   Probe				Standard	Reference value
   (+)		(-)
   Front display unit
   Connector	Terminal	Connector	Terminal
   M156	8	M156	1	Waveform of 1.0 V - 5.5 V is output.	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES 

Replace AV control unit. Refer to REMOVAL AND INSTALLATION .

NO 

Replace front display unit. Refer to REMOVAL AND INSTALLATION .