Door Mirror LH Defogger Circuit Inspection (Without Auto Dimming Outside Mirrors)

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect door mirror LH.
Turn ignition switch ON.

Check voltage between door mirror LH connector and ground.

DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT

Connector	Terminals		Condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
D4	2	Ground	Rear window defogger switch ON	Battery voltage
D4	2	Ground	Rear window defogger switch OFF	0

Fig 1: Checking Voltage Between Door Mirror LH Connector And Ground

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

OK or NG

OK: GO TO 2

NG: Repair or replace harness.

CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between door mirror LH connector D4 terminal 1 and ground.
  1 - Ground: Continuity should exist.
Fig 2: Checking Continuity Between Door Mirror LH Connector D4 Terminal 1 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3

NG: Repair or replace harness.
CHECK DOOR MIRROR DEFOGGER
Check continuity between door mirror LH terminals 1 and 2.

1 - 2: Continuity should exist.

Fig 3: Checking Continuity Between Door Mirror LH Terminals 1 And 2
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Repair or replace harness.

NG: Replace door mirror LH. Refer to "DOOR MIRROR ".