Power Supply and Ground Circuit Check for Display Unit and NAVI Switch

Check that the following fuses of the display unit and NAVI switch are not blown.

Fig 1: Power Supply & Ground Circuit Check For Display Unit & Navi Switch

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

OK or NG 

• OK: GO TO 2.
• NG: If fuse is blown, be sure to eliminate case of malfunction before installing new fuse. Refer to "POWER SUPPLY ROUTING CIRCUIT ".

1. Check voltage between display unit harness connector and ground.
   Fig 2: Display Unit Connector M35 Terminal 19, 21, 23 & Ground Voltage Specifications Table

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 3: Display Unit Connector M35 Terminal 19, 21, 23 & Ground Voltage Test

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check voltage between NAVI switch harness connector and ground.
   Fig 4: Navi Switch Harness Connector M37 Terminal 1 & Ground Voltage Specifications Table

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 5: Navi Switch Harness Connector M37 Terminal 1 & Ground Voltage Test

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

OK or NG 

• OK: GO TO 3.
• NG: Check the following.
  • Harness for open or short between display unit and fuse.
  • Harness for open or short between NAVI switch and fuse.

1. Turn ignition switch OFF.
2. Disconnect display unit connector.
3. Check continuity between display unit harness connector and ground.
   Fig 6: Display Unit Connector M35 Terminal 22, 24 & Ground Continuity Specifications Table

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 7: Display Unit Connector M35 Terminal 22, 24 & Ground Continuity Test

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Disconnect NAVI switch connector.
5. Check continuity between NAVI switch harness connector M37 terminal 7 (B) and ground.

   Continuity should exist. 

OK or NG 

• OK: Inspection end.
• NG: Repair or replace harness.
  Fig 8: Navi Switch Harness Connector M37 Terminal 7 & Ground Continuity Test

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