Electrical Load Signal

ELECTRICAL LOAD SIGNAL

Description

The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred to
ECM through the CAN communication line.


Component Function Check


1. CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

1.Turn ignition switch ON.
2.Select "DATA MONITOR" mode with CONSULT.
3.Select "LOAD SIGNAL" and check indication under the following conditions.





Is the inspection result normal?
YES- GO TO 2.
NO- Go to .

2. CHECK LIGHTING SWITCH FUNCTION

Check "LOAD SIGNAL" indication under the following conditions.





Is the inspection result normal?
YES- GO TO 3.
NO- Go to .

3. CHECK HEATER FAN CONTROL SWITCH FUNCTION

Select "HEATER FAN SW" and check indication under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Go to .


Diagnosis Procedure


1. INSPECTION START

Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). .
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

Perform trouble diagnosis of rear window defogger system. Initial Inspection and Diagnostic Overview.
- INSPECTION END

3. CHECK HEADLAMP SYSTEM

Perform trouble diagnosis of headlamp system. Exterior Lighting.
- INSPECTION END

4. CHECK AIR CONDITIONING SYSTEM

Perform trouble diagnosis of air conditioning system. Manual Air Conditioning.
- INSPECTION END