Rear Window Defogger Circuit Check

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 D406 terminal + and ground.
   CONNECTOR TERMINALS REFERENCE CHART
   
   

   Connector	Terminals		Condition	Voltage (V) (Approx.)
   	(+)	(-)
   D406	+	Ground	Rear window defogger switch ON.	Battery voltage
   			Rear window defogger switch OFF.	0

   Fig 1: Checking Voltage Between Rear Window Defogger Connector D406 Terminal + And Ground

   

OK or NG 

OK: GO TO 3.

NG: GO TO  4.

1. Turn ignition switch OFF.
2. Check continuity between rear window defogger connector D604 terminal - and ground.

   - - 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.

  Fig 2: Checking Continuity Between Rear Window Defogger Connector D604 Terminal - And Ground

  

NG: Repair or replace harness.

1. Turn ignition switch ON.
2. Check voltage between IPDM E/R connector E124 terminal 60 and ground.
   CONNECTOR TERMINALS REFERENCE CHART
   
   

   Connector	Terminals		Condition	Voltage (V) (Approx.)
   	(+)	(-)
   E124	60	Ground	Rear window defogger switch ON	Battery voltage
   			Rear window defogger switch OFF	0

   Fig 3: Checking Voltage Between IPDM E/R Connector And Ground

   

OK or NG 

OK: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".

NG: Repair or replace harness.