System Diagram
System Description
OUTLINE
The auto light control system has an optical sensor that detects outside brightness.
When the lighting switch is in AUTO position, it automatically turns ON/OFF the parking, license plate, tail, front fog lamps and headlamps in accordance with the ambient light. Sensitivity can be adjusted in four steps.
For the details of the setting, refer to EXL-191, "HEADLAMP : CONSULT Function (BCM - HEAD LAMP)".
Component Parts Location
Component Description
AUTO LIGHT OPERATION
Applicable lamps
When the lighting switch is in AUTO position with the ignition switch in ON position, BCM detects the AUTO LIGHT (ON) by BCM combination switch (lighting and turn signal switch) reading function. BCM automatically turns ON/OFF the applicable lamps according to ambient brightness. NOTE: Timing for when lamps turn ON/OFF can be changed by the function setting of CONSULT. Refer to EXL-191, "HEADLAMP : CONSULT Function (BCM - HEAD LAMP)".
Unlock sensor
Description
Detects door lock condition of driver door.
Component Function Check
1. CHECK FUNCTION
With CONSULT
Check unlock sensor UNLK SEN−DR in "Data Monitor" mode.
Diagnosis Procedure
1. CHECK UNLOCK SENSOR POWER SUPPLY
Check signal between BCM connector and ground with o ...
Trouble diagnosis - specification value
Description
The specification (SP) value indicates the tolerance of the value that is
displayed in "SPEC" of "DATA MONITOR"
mode of CONSULT during normal operation of the Engine Control System. When the
value in "SPEC" in
"DATA MONITOR" mode is NOT within the SP value, the Engine Control Sy ...
Filament
Inspection and Repair
INSPECTION
When measuring voltage, wrap tin foil around the top of the
negative
probe. Then press the foil against the wire with your finger.
Attach probe circuit tester (in Volt range) to middle portion of
each filament.
If a filament is burne ...