Driver Side Door Mirror Defogger Circuit Check

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect door mirror (driver side) connector.
Turn ignition switch ON.

Check voltage between door mirror (driver side) connector and ground.

VOLTAGE SPECIFICATION CHART

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

Fig 1: Checking Voltage Between Door Mirror (Driver Side) Connector And Ground

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

OK or NG

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

CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between door mirror (driver side) connector D2 terminal 5 and ground.
  1. 5 (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.
Fig 2: Checking Continuity Between Door Mirror (Driver Side) Connector D2 Terminal 5 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DOOR MIRROR DEFOGGER
1. Connector door mirror connector.
2. Check continuity between each door mirror connector D2 (driver side) terminals 1 and 5.
  1. 1 (L/B)-5 (L/B) : Continuity should exist.
OK or NG
1. OK : Check the condition of the harness and the connector.
2. NG : Replace door mirror (driver side).
Fig 3: Checking Continuity Between Each Door Mirror Connector D2 (Driver Side) Terminals 1 And 5
Courtesy of NISSAN MOTOR CO., U.S.A.