Door Mirror LH Defogger Circuit Check

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door mirror LH.
3. Turn ignition switch ON.
4. Check voltage between door mirror LH connector and ground.
  
  Fig 1: Door Mirror LH Defogger Connector D4 Terminal 10 Voltage Specification
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 2.
2. NG: Repair or replace harness.
Fig 2: Checking Voltage Between Door Mirror LH Connector And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between door mirror LH connector D4 terminal 11 and ground.
  1. 11 (B) - Ground: Continuity should exist.
OK or NG
1. OK: GO TO 3.
2. NG: Repair or replace harness.
Fig 3: Checking Continuity Between Door Mirror LH Connector D4 Terminal 11 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DOOR MIRROR DEFOGGER
1. Connect door mirror LH.
2. Check continuity between door mirror LH connector D4 terminals 10 and 11.
  1. 10 (GR/W) - 11 (B): Continuity should exist.
OK or NG
1. OK: Repair or replace harness.
2. NG: Replace door mirror LH. Refer to "DOOR MIRROR ASSEMBLY ".
Fig 4: Checking Continuity Between Door Mirror LH Connector D4 Terminals 10 And 11
Courtesy of NISSAN MOTOR CO., U.S.A.