Power Supply And Ground Circuit Inspection

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.

FUSE INSPECTION
Check if any of the following fuses are blown.

Fig 1: Identifying Fuse Inspection Table (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying Fuse Inspection Table (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Refer to "WIRING DIAGRAM - KEYLESS ".

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 ".
POWER SUPPLY CIRCUIT INSPECTION
Disconnect the connectors of BCM and driver door control unit (LCU) or passenger, rear LH, RH door control units, measure the voltage between the following terminal No. of the connector and ground.

Fig 3: Identifying Power Supply Circuit Inspection Table
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK >> GO TO 3.

NG >> Check harness for open or short.

Fig 4: Checking Power Supply Circuit Inspection Terminal
Courtesy of NISSAN MOTOR CO., U.S.A.
GROUND CIRCUIT INSPECTION
Check the continuity between the following terminals on the vehicle side connector for BCM, driver door LCU, passenger or rear LH, RH door control units and ground.

Fig 5: Identifying Ground Circuit Inspection Table
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK >> Power supply and ground circuit is "OK".

NG >> Repair or replace harness.

Fig 6: Checking Ground Circuit Inspection Terminal
Courtesy of NISSAN MOTOR CO., U.S.A.