DISPLAY UNIT: Diagnosis Procedure

1. CHECK FUSES

   Check that the following fuses are not blown.

   FUSE SPECIFICATIONS
   
   

   Unit	Terminals	Signal name	Fuse No.
   Display unit	9	Battery power	24
   	8	Ignition switch ACC or ON	17

   Are the fuses OK? 

   YES: GO TO 2.

   NO: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2. POWER SUPPLY CIRCUIT CHECK
   1. Turn ignition switch OFF.
   2. Disconnect display unit connector.
   3. Check voltage between the display unit and ground.
   CONNECTOR TERMINAL VOLTAGE CHART
   
   

   (+)		(-)	OFF	ACC	ON
   Connector	Terminal
   M93 (without Bluetooth) M109 (with Bluetooth)	9	Ground	Battery voltage	Battery voltage	Battery voltage
   	8	Ground	0V	Battery voltage	Battery voltage

   Fig 1: Checking Voltage Between Display Unit Connector Terminal 8, 9 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

   Are the voltage results as specified? 

   YES: GO TO 3.

   NO:

   • Check connector housings for disconnected or loose terminals.
   • Repair harness or connector.
3. GROUND CIRCUIT CHECK
   1. Turn ignition switch OFF.
   2. Check continuity between display unit harness connector and ground.
   CONNECTOR TERMINAL CONTINUITY CHART
   
   

   Connector	Terminal	-	Continuity
   M93	3	Ground	Yes

   Fig 2: Checking Continuity Between Display Unit Harness Connector Terminal 3 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

Is the inspection result normal? 

YES: Inspection End.

NO: Repair harness or connector.