Driver Side Door Mirror Defogger Circuit Check

1. Turn ignition switch OFF.
2. Disconnect door mirror (driver side) connector.
3. Turn ignition switch ON.
4. Check voltage between door mirror (driver side) connector and ground.
   Fig 1: Checking Driver Side Door Mirror Defogger Power Supply Circuit

   Courtesy of NISSAN MOTOR CO., U.S.A.
   DRIVER SIDE DOOR MIRROR DEFOGGER VOLTAGE
   
   

   Connector	Terminal (Wire color)		Condition	Voltage (V) (Approx.)
   	(+)	(-)
   D2	1 (L)	Ground	Rear window defogger switch ON	Battery voltage
   			Rear window defogger switch OFF	0

OK or NG

1. OK: GO TO 2.
2. NG: Repair or replace harness between fuse block (J/B) and door mirror (driver side).

1. Turn ignition switch OFF.
2. Check continuity between door mirror (driver side) connector D2 terminal 2 and ground.
   Fig 2: Checking Driver Side Door Mirror Defogger Ground Circuit

   Courtesy of NISSAN MOTOR CO., U.S.A.

   2 (B) - Ground: Continuity should exist. 

OK or NG

1. OK: GO TO 3.
2. NG: Repair or replace harness between door mirror (driver side) and ground.

1. Connector door mirror connector. 
2. Check continuity between each door mirror connector D2 (driver side) terminals 1 and 2. 
   Fig 3: Checking Driver Side Door Mirror Defogger

   Courtesy of NISSAN MOTOR CO., U.S.A.

   1 (L) - 2 (B): Continuity should exist. 

OK or NG

1. OK: Check condition of harness and connector.
2. NG: Replace door mirror (driver side).