Door Mirror Sensor Power Supply and Ground Circuit inspection

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. 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 M34 terminals 33, 41 and door mirror connector D4 (LH), D107 (RH) terminals 4, 9.
  33 - 4 : Continuity should exist.
  
  41 - 9 : Continuity should exist.
3. Check continuity between automatic drive positioner control unit connector M34 terminals 33, 41 and ground.
  33 - Ground : Continuity should not exist.
  
  41 - Ground : Continuity should not exist.
  
  Fig 1: Checking Continuity Between Automatic Drive Positioner Control Unit Connector M34 Terminal 33 And Ground
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 M34 terminal 33 and ground.
  33 - Ground : Approx. 5V
  
  Fig 2: Checking Voltage Between Automatic Drive Positioner Control Unit Connector M34 Terminal 33 And Ground
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 M34 terminal 41 and ground.
  41 - Ground : Continuity should exist.
  
  Fig 3: Checking Continuity Between Automatic Drive Positioner Control Unit Connector M34 Terminal 41 And Ground
OK or NG

OK: Door mirror sensor power supply and ground circuit are OK.

NG: Replace automatic drive positioner control unit.