Electrical Load Signal

ELECTRICAL LOAD SIGNAL


Description

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





ELECTRICAL LOAD SIGNAL


Diagnosis Procedure

1.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-III and select "DATA MONITOR" mode.
3. Select "LOAD SIGNAL" and check indication under the following conditions.





OK or NG
OK - GO TO 2.
NG - GO TO 4.
2.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check "LOAD SIGNAL" indication under the following conditions.





OK or NG
OK - GO TO 3.
NG - GO TO 5.
3.CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION
Select "HEATER FAN SW" and check indication under the following conditions.





OK or NG
OK >> INSPECTION END
NG - GO TO 6.
4.CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to System Diagram System Description.
>> INSPECTION END
5.CHECK HEADLAMP SYSTEM
Refer to System Diagram System Description Headlamp Component Description, or System Diagram System Description Daytime Light System.
>> INSPECTION END
6.CHECK HEATER FAN CONTROL SYSTEM
Refer to System Description.
>> INSPECTION END