Back Door Power Supply and Ground Circuit Inspection

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

BACK DOOR POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect back door control unit connector.
3. Check voltage between back door control unit connector B55 terminal 3 and ground.
  3 (Y/R) - Ground: Approx. battery voltage
OK or NG
1. OK: GO TO 2.
2. NG: Repair the back door control unit power supply circuit.
Fig 1: Checking Voltage Between Back Door Control Unit Connector B55 Terminal 3 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
BACK DOOR GROUND CIRCUIT INSPECTION
Check continuity between back door control unit connector B55 terminal 1, 2 and ground.

1 (B) - Ground: Continuity should exist.

2 (B) - Ground: Continuity should exist.

OK or NG
1. OK: Circuit is OK.
2. NG: Repair the harness between the back door control unit and ground.
Fig 2: Checking Continuity Between Back Door Control Unit Connector B55 Terminal 1, 2 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.