Auto Light System

System Description
This system automatically turns the parking lamps and the headlamps on and off in accordance with ambient light.

Timing for when the lamps turn on/off can be selected using four modes.

OUTLINE
The auto light control system uses an optical sensor that detects the brightness of outside light.

When the lighting switch is in AUTO position, it automatically turns on/off the parking lamps and the headlamps (and fog lamps, if equipped) in accordance with the ambient light. Sensitivity can be adjusted in four steps. For the details of the setting, refer to "SETTING CHANGE FUNCTIONS".

When the lighting switch is in "AUTO" position, power is supplied
- through BCM (body control module) terminal 17
- to auto light sensor terminal 1.

When lighting switch is in "AUTO" position, ground is supplied
- to auto light sensor terminal 3
- through BCM terminal 18.

When ignition switch is turned to "ON" or "START" position and when outside brightness is darker than prescribed level, input is supplied
- to BCM terminal 14
- from auto light sensor terminal 2.

The headlamps will then illuminate. For a description of headlamp operation, refer to "System Description".

BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the AUTO position, and the ignition switch is turned from ON or ACC to OFF, and one of the doors is opened, the battery saver feature is activated.

Under this condition, the headlamps remain illuminated for 5 minutes, unless the combination switch (lighting switch) position is changed. If the combination switch (lighting switch) position is changed, then the headlamps are turned off.

SHUT OFF DELAY
When the ignition switch is turned from ON to OFF while the auto light system is activated and the headlamps are illuminated, the shut off delay feature is activated. Under this condition, the BCM no longer receives a voltage signal at terminal 38 and this starts the auto light shut off delay timer. The shut off delay timer is active until one of the doors is opened or the combination switch (lighting switch) position is changed. If one of the doors is opened, the shut off delay feature is deactivated and the battery saver control feature is activated. If the combination switch (lighting switch) position is changed, the headlamps are turned off.

CAN Communication System Description
Refer to "INFORMATION BUS".




Major Components and Functions