Power Supply and Ground Circuit Check for NAVI Control Unit

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Fuse Inspection Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : GO TO 2.
- NG : If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to "POWER SUPPLY ROUTING CIRCUIT ".
CHECK POWER SUPPLY CIRCUIT
Check voltage between NAVI control unit harness connector terminals and ground.

Fig 2: NAVI Control Unit Harness Connector Terminals & Ground Voltage Specifications Table
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: NAVI Control Unit Harness Connector Terminals & Ground Voltage Test
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : GO TO 3.
- NG : Repair harness or connector.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector.
3. Check continuity between NAVI control unit harness connector B104 terminals 1 (B), 4 (B) and ground.
  - 1, 4 - Ground : Continuity should exist.
OK or NG
- OK : INSPECTION END
- NG : Repair harness or connector.
Fig 4: NAVI Control Unit Harness Connector B104 Terminals 1 (B), 4 (B) & Ground Continuity Test
Courtesy of NISSAN MOTOR CO., U.S.A.