Power Supply and Ground Circuit Inspection

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSES
Check for blown combination meter fuses.

Fig 1: Combination Meter Fuses Description Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Refer to "WIRING DIAGRAM - METER - ".

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
1. Disconnect combination meter connector.
2. Check voltage between combination meter harness connector terminals and ground.
  
  Fig 2: Combination Meter Harness Connector Terminals And Ground Voltage Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Voltage Between Combination Meter Harness Connector Terminals And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 3.
- NG: Check the harness for open between combination meter and fuse.
CHECK GROUND CIRCUIT
Check continuity between combination meter harness connector terminal and ground.

Fig 4: Combination Meter Harness Connector Terminal And Ground Continuity Specification Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking Continuity Between Combination Meter Harness Connector Terminal And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: Inspection End.
- NG: Repair harness or connector.