DTC Diagnosis Procedure With VQ40DE

Heats the heating element with the power supply from the heated mirror relay to defog the door mirror, or to prevent the door mirror from fogging up.

1. CHECK FUSE 
   1. Turn ignition switch OFF.
   2. Check the 15A fuse (No. 43 located in IPDM E/R).

   Is the inspection result normal?

   YES

   GO TO 2.

   NO

   Replace the blown fuse after repairing the affected circuit.

2. CHECK POWER SUPPLY CIRCUIT 
   1. Turn ignition switch OFF.
   2. Disconnect door mirror RH connector.
   3. Turn ignition switch ON.
   4. Check voltage between door mirror RH harness connector and ground.

      (+)		(-)	Condition		Voltage (V) (Approx.)
      Door mirror RH
      Connector	Terminal
      D106	2	Ground	Rear window defogger switch	ON	Battery voltage
      				OFF	0 V

   Is the inspection result normal?

   YES

   GO TO 4.

   NO

   GO TO 3.

3. CHECK DOOR MIRROR DEFOGGER CIRCUIT 
   1. Turn ignition switch OFF.
   2. Disconnect IPDM E/R connector E120.
   3. Check continuity between IPDM E/R harness connector and door mirror RH harness connector.

      IPDM E/R		Door mirror RH		Continuity
      Connector	Terminal	Connector	Terminal
      E120	23	D106	2	Yes

   4. Check continuity between IPDM E/R harness connector E120 and ground.

      IPDM E/R		Ground	Continuity
      Connector	Terminal
      E120	23		No

   Is the inspection result normal?

   YES

   Replace IPDM E/R. Refer to Removal and Installation .

   NO

   Repair or replace harness.

4. CHECK GROUND CIRCUIT 
   1. Turn ignition switch OFF.
   2. Check continuity between door mirror RH harness connector and ground.

      Door mirror RH		Ground	Continuity
      Connector	Terminal
      D106	3		Yes

   Is the inspection result normal?

   YES

   Replace door mirror RH. Refer to Removal and Installation - Door Mirror Glass .

   NO

   Repair or replace harness.