Component Test

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.


Component Function Check


1. CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

1.Turn ignition switch ON.
2.Connect CONSULT and select "DATA MONITOR" mode.
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 (see below).

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 (see below).

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 (see below).


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

System Diagram.
- INSPECTION END

3. CHECK HEADLAMP SYSTEM

Xenon Type (XENON TYPE) or Halogen Type (HALOGEN TYPE).
- INSPECTION END

4. CHECK HEATER FAN CONTROL SYSTEM

Switches And Their Control Function.
- INSPECTION END