Power Supply Circuit Inspection

Check that the following fuses are not blown.

Fig 1: Power Supply Circuit Inspection - Fuse Check Reference

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 problem before installing new fuse. Refer to "POWER SUPPLY ROUTING CIRCUIT ".

1. Disconnect audio unit connector M43, subwoofer connector B72 and BOSE speaker amp. connector M112.
2. Check voltage between the audio unit and ground.
   Fig 2: Audio Unit Connector M43 Terminals And Ground Voltage Specifications

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

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check voltage between subwoofer and ground.
   Fig 4: Subwoofer Connector B72 Terminal 6 And Ground Voltage Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 5: Checking Voltage Between Subwoofer And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between BOSE speaker amp. and ground.
   Fig 6: BOSE Speaker Amp. Connector M112 Terminal 1 And Ground Voltage Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 7: Checking Voltage Between BOSE Speaker Amp. And Ground

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

OK or NG

• OK: GO TO 3.
• NG:
  • Check connector housings for disconnected or loose terminals.
  • Repair harness or connector.

Check continuity between subwoofer harness connector B72 terminal 5 (B) and BOSE speaker amp. harness connector M112 terminal 17 (B) and ground.

• Continuity should exist. 

OK or NG

• OK: Inspection End.
• NG:
  • Check connector housings for disconnected or loose terminals.
  • Repair harness or connector.

Fig 8: Checking Continuity Between Subwoofer Harness Connector B72 Terminal 5 And BOSE Speaker Amp. Harness Connector M112 Terminal 17 And Ground

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