Vehicle Condition Setting is not Possible

1. Disconnect connectors of AV control unit, combination meter and BCM.
2. Check continuity AV control unit harness connector M77 terminal 34 (LG) and BCM harness connector M4 terminal 31 (LG).
   1. Continuity should exist. 
3. Check continuity AV control unit harness connector M77 terminal 35 (PU) and BCM harness connector M4 terminal 30 (PU).
   1. Continuity should exist. 
4. Check continuity between AV control unit harness connector M77 terminal 34 (LG), 35 (PU) and ground.
   1. Continuity should not exist. 
   Fig 1: Checking Harness (Vehicle Condition Setting Is Not Possible)

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

OK or NG 

1. OK: Go to 2.
2. NG:
   • Check connector housings for disconnected or loose terminals.
   • Repair harness or connector.

1. Connect AV control unit connector, combination meter connector and BCM connector.
2. Turn ignition switch ON.
3. Check voltage signal between AV control unit harness connector M77 terminal 34 (LG) and ground with CONSULT-II or oscilloscope.
   Fig 2: Checking Voltage Signal Between AV Control Unit Harness Connector M77 Terminal 34 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. 34 (LG) - Ground: Refer to  TERMINALS AND REFERENCE VALUE FOR AV CONTROL UNIT  

OK or NG 

1. OK: Go to 3.
2. NG: Replace AV control unit.

1. Turn ignition switch to ON and display "VEHICLE ELECTRONIC SYSTEMS" screen.
2. Check voltage signal between AV control unit harness connector M77 terminal 35 (PU) and ground with CONSULT-II or oscilloscope.
   Fig 3: Checking Voltage Signal Between AV Control Unit Harness Connector M77 Terminal 35 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. 35 (PU) - Ground: Refer to  TERMINALS AND REFERENCE VALUE FOR AV CONTROL UNIT  

OK or NG 

1. OK: Replace AV control unit.
2. NG: Replace BCM.