Back Door Control Unit Power Supply and Ground Circuit Inspection

WARNING: This page is about a different car, the 2008 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

BACK DOOR CONTROL UNIT POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect back door control unit.
3. Check voltage between back door control unit connector B55 terminals 3, 10 and ground.
  3 - Ground : Approx. battery voltage
  
  10 - Ground : Approx. battery voltage
OK or NG

OK: GO TO 2.

NG: Repair or replace harness.

Fig 1: Checking Voltage Between Back Door Control Unit Connector B55 Terminals 3, 10 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
BACK DOOR CONTROL UNIT GROUND CIRCUIT INSPECTION
Check continuity between back door control unit connector B55 terminals 1, 2 and ground.

1 - Ground : Continuity should exist.

2 - Ground : Continuity should exist.

OK or NG

OK: Ground circuit is OK.

NG: Repair or replace harness.

Fig 2: Checking Continuity Between Back Door Control Unit Connector B55 Terminals 1, 2 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.