Power Supply and Ground Circuit Inspection for Display

WARNING: This page is about a different car, the 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSES
- Check 15A fuse [No. 52, located in fuse, fusible link and relay block (J/B)] is blown.
- Check 10A fuse [No. 21, located in fuse block (J/B) NO. 1] is blown.
OK or NG

OK >> GO TO 2.

NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
CHECK POWER SUPPLY CIRCUIT
1. Disconnect display connector.
2. Check voltage between display and ground.
  
  Fig 1: Checking Voltage Between Display & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Identifying Terminal And Ignition Switch Position
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK >> GO TO 3.

NG >> Check harness for open or short between display and fuse.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between display and ground.
  
  Fig 3: Checking Continuity Between Display & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Identifying Terminal Continuity Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK >> Inspection end.

NG >> Repair harness or connector.