Power Supply and Ground Circuit Check for NAVI Control Unit

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE
Make sure the following fuses of the NAVI control unit are not blown.

Fig 1: Fuse Terminal Specification
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK : GO TO 2.
2. NG : If fuse is blown, be sure to eliminate case of malfunction before installing new fuse. Refer to "POWER SUPPLY ROUTING CIRCUIT ".
CHECK POWER SUPPLY CIRCUIT
Check voltage between connector terminals and ground as follows.

Fig 2: Terminal Switch Position Specification
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Checking Voltage Between Connector Terminals And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK : GO TO 3.
2. NG : Check harness for open or short between NAVI control unit and fuse.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector.
3. Check continuity between the following NAVI control unit and ground.
Fig 4: Terminal Switch Specification
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking Continuity Between NAVI Control Unit And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK : INSPECTION END
2. NG : Repair harness or connector.