Ignition Signal Check for NAVI Control Unit

1. Turn ignition switch ON.
2. Check voltage between NAVI control unit harness connector B207 terminal 26 (G) and ground.
   1. Battery voltage should exist. 

OK or NG 

1. OK : Replace NAVI control unit.
2. NG : Check harness for open or short between NAVI control unit and fuse.

Fig 1: Checking Voltage Between NAVI Control Unit Harness Connector B207 Terminal 26 (G) And Ground

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