Diagnosis Procedure

The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred from BCM via the CAN communication through IPDM E/R to ECM.

1. INSPECTION START 

   Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to Component Function Check .

   Which circuit is related to the incident?

   Rear window defogger

   GO TO 2.

   Headlamp

   GO TO 3.

   Heater fan

   GO TO 4.

2. CHECK REAR WINDOW DEFOGGER SYSTEM 

   Check rear window defogger system. Refer to Work Flow .

   INSPECTION END

3. CHECK HEADLAMP SYSTEM 

   Check headlamp system. Refer to Work Flow (Halogen headlamp), Work Flow (Led headlamp).

   INSPECTION END

4. CHECK HEATER FAN CONTROL SYSTEM 

   Check heater fan control system. Refer to Work Flow .

   INSPECTION END