Rear Window Defogger Circuit Inspection

Check if any of the following fuses in IPDM E/R are blown.

OK or NG 

OK >> GO TO 2.

NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

1. Turn ignition switch OFF.
2. Disconnect rear window defogger.
3. Turn ignition switch ON.
4. Check voltage between rear window defogger connector and ground.
   TERMINALS VOLTAGE CHART
   
   

   Connector	Terminals		Condition	Voltage (V) (Approx.)
   	(+)	(-)
   D412 (Hatchback) B140 (Sedan)	1	Ground	Rear window defogger switch ON	Battery voltage
   			Rear window defogger switch OFF	0

   Fig 1: Checking Voltage Between Rear Window Defogger Connector And Ground

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

OK or NG 

OK >> GO TO 3.

NG >> GO TO  4.

1. Turn ignition switch OFF.
2. Check continuity between rear window defogger connector D413 (Hatchback) or B141 (Sedan) terminal 2 and ground.

   2 - Ground: Continuity should exist. 

OK or NG 

OK >> Check filament. Refer to "FILAMENT CHECK ".

• If filament is OK.

  Check the condition of the harness and the connector.

• If filament is NG.

  Repair filament. Refer to "FILAMENT REPAIR ".

NG >> Repair or replace harness.

Fig 2: Checking Continuity Between Rear Window Defogger Connector Terminal 2 And Ground

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

1. Disconnect condenser-1.
2. Check continuity between rear window defogger connector and condenser-1 connector.
   TERMINALS CONTINUITY CHART
   
   

   	A		B
   Connector	Terminal	Connector	Terminal	Continuity
   D412 (Hatchback) B140 (Sedan)	1	D411 (Hatchback) B141 (Sedan)	2	Yes

3. Check continuity between rear window defogger connector and ground.
   Fig 3: Checking Continuity Between Rear Window Defogger Connector And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   TERMINALS CONTINUITY CHART
   
   

   A		Ground	Continuity
   Connector	Terminal
   D412 (Hatchback)B140 (Sedan)	1		No

OK or NG 

OK >> GO TO 5.

NG >> Repair or replace harness.

Check continuity between condenser-1 terminals.

OK or NG 

OK >> GO TO 6.

NG >> Replace condenser-1.

Fig 4: Checking Continuity Between Condenser-1 Terminals

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

1. Disconnect IPDM E/R.
2. Check continuity between condenser-1 connector and IPDM E/R connector.
   TERMINALS CONTINUITY CHART
   
   

   A		B		Continuity
   Connector	Terminal	Connector	Terminal
   D409 (Hatchback) B130 (Sedan)	1	E48	60	Yes

3. Check continuity between condenser-1 connector and ground.
   Fig 5: Checking Continuity Between Condenser-1 Connector And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   TERMINALS CONTINUITY CHART
   
   

   A		Ground	Continuity
   Condenser-1 connector	Terminal
   D409 (Hatchback) B130 (Sedan)	1		No

OK or NG 

OK >> GO TO 7.

NG >> Repair or replace harness.

1. Connect IPDM E/R.
2. Turn ignition switch ON.
3. Check voltage between IPDM E/R connector and ground.
   TERMINALS VOLTAGE CHART
   
   

   Connector	Terminals		Condition	Voltage (V) (Approx.)
   	(+)	(-)
   E48	60	Ground	Rear window defogger switch ON	Battery voltage
   			Rear window defogger switch OFF	0

   Fig 6: Checking Voltage Between IPDM E/R Connector And Ground

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

OK or NG 

OK >> Check condition of harness and connector.

NG >> Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".