Back Door Closure Control Unit Power Supply and Ground Circuit Check

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector D106 terminal 1 and ground.
  1. 1 (R) - Ground : Battery voltage
OK or NG
1. OK : GO TO 2.
2. NG : Check the following.
  - 15A fuse [No. 18, located in fuse block (J/B)]
  - Harness for open or short between back door closure control unit and fuse.
Fig 1: Checking Voltage Between Back Door Closure Control Unit Connector D106 Terminal 1 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK GROUND CIRCUIT
1. Disconnect back door closure control unit connector.
2. Check continuity between back door closure control unit connector D106 terminal 4 and ground.
  1. 4 (B) - Ground : Continuity should exist.
OK or NG
1. OK : Power supply and ground circuit are OK.
2. NG : Repair or replace harness.
Fig 2: Checking Continuity Between Back Door Closure Control Unit Connector D106 Terminal 4 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.