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 
   1. 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 
   1. Check rear window defogger system. Refer to Work Flow .

   >>

   INSPECTION END

3. CHECK HEADLAMP SYSTEM 
   1. Check headlamp system. Refer to Work Flow (Halogen headlamp), Work Flow (Led headlamp).

   >>

   INSPECTION END

4. CHECK HEATER FAN CONTROL SYSTEM 
   1. Check heater fan control system. Refer to Work Flow .

   >>

   INSPECTION END