Driver Side Door Mirror Defogger Circuit Check

WARNING: This page is about a different car, the 2004 Infiniti Q45. 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 ON.
2. Check voltage between door mirror (driver side) connector and ground.
  
  Fig 1: Voltage Specifications Between Door Mirror (Driver Side) Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking Voltage Between Door Mirror (Driver Side) Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  1. OK: GO TO 2.
  2. NG: Repair or replace harness between door mirror defogger relay and door mirror (driver side).
CHECK DOOR MIRROR DEFOGGER GROUND HARNESS
1. Turn ignition switch OFF.
2. Disconnect door mirror (driver side) connector.
3. Check continuity between driver side door mirror defogger connector D2 terminal 5 and ground.
  1. 5 (B) - Ground: Continuity should exist.
  OK or NG
  1. OK: Check the following, if it is OK, replace door mirror (driver side).
    - Check the condition of the harness and the connector.
    - Door mirror defogger firmament continuity check.
  2. NG: Repair or replace harness between driver side door mirror (driver side) and ground.
Fig 3: Checking Continuity Between Driver Side Door Mirror Defogger Connector D2 Terminal 5 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.