Door Mirror Sensor Power Supply and Ground Circuit inspection

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

CHECK DOOR MIRROR SENSOR CIRCUIT HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit and door mirror (LH and RH).
2. Check continuity between automatic drive positioner control unit connector M42 terminals 33, 41 and door mirror LH connector D4 LH, D107 RH terminals 4, 5, 8.
  33 (W/L) - 5 (W/L) : Continuity should exist.
  
  41 (V) - 8 (V) : Continuity should exist.
  
  Fig 1: Checking Continuity Between Automatic Drive Positioner Control Unit Connector M42 Terminals 33, 41 And Door Mirror LH Connector D4 LH, D107 RH Terminals 4, 5, 8
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between automatic drive positioner control unit connector M42 terminals 33, 41 and ground.
  33 (W/L) - Ground : Continuity should not exist.
  
  41 (V) - Ground : Continuity should not exist.
OK or NG
- OK : GO TO 2.
- NG : Repair or replace harness.
CHECK MIRROR SENSOR POWER SUPPLY
1. Connect automatic drive positioner control unit and door mirror LH.
2. Turn ignition switch to ACC.
3. Check voltage between automatic drive positioner control unit connector M42 terminal 33 and ground.
  33 (W/L) - Ground : Approx. 5V
OK or NG
- OK : GO TO 3.
- NG : Replace automatic drive positioner control unit.
CHECK MIRROR SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between automatic drive positioner control unit connector M42 terminal 41 and ground.
  41 (V) - Ground : Continuity should exist.
OK or NG
- OK : Check the condition of the harness and connector.
- NG : Replace automatic drive positioner control unit.