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-III.
3. Select "LOAD SIGNAL" and check indication under the following conditions.





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




Diagnosis Procedure
1.INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). SEE 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
Initial Inspection and Diagnostic Overview.
- INSPECTION END
3.CHECK HEADLAMP SYSTEM
Exterior Lighting Xenon Type.
- INSPECTION END
4.CHECK HEATER FAN CONTROL SYSTEM
Automatic Air Conditioner.
- INSPECTION END