Electrical Load Signal

ELECTRICAL LOAD SIGNAL

Description

The electrical load signal (Rear window defogger switch signal, headlamp switch signal, heater fan switch signal, etc.) is transferred via 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 "Diagnosis Procedure" .

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 "Diagnosis Procedure" .

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" .


Diagnosis Procedure


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

Refer to "Work Flow" Initial Inspection and Diagnostic Overview.
- INSPECTION END

3. CHECK HEADLAMP SYSTEM

Refer to "Work Flow" Exterior Lighting.
- INSPECTION END

4. CHECK HEATER FAN CONTROL SYSTEM

Refer to "Work Flow" Automatic Air Conditioning.
- INSPECTION END