Driver Door Control Unit Circuit Check

WARNING: This page is about a different car, the 2004 Infiniti M45. 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. Disconnect driver door control unit (LCU01) connector.
3. Check voltage between driver door control unit (LCU01) connector D8 terminal 14 and ground.
  
  Fig 1: Checking Power Supply Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. 14 (Y/G) - Ground: Battery voltage
OK or NG
1. OK: Go to 2.
2. NG: Check the following.
  - 40A fusible link (letter H. located in fuse and fusible link box).
  - Harness for open or short between driver control unit (LCU01) and fuse.
Check Ground Circuit

Fig 2: Checking Ground Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.

Check continuity between driver door control unit (LCU01) connector D8 terminal 15 and ground.
1. 15 (B) - Ground: Continuity should exist.
OK or NG
1. OK: Inspection end
2. NG: Repair or replace harness.