GS 300 L6-3.0L (2JZ-GE) (1993)
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Headlamp Control Module: Description and Operation
Automatic Light Control
With the ignition SW turned ON, the current flows to TERMINAL 3 of the automatic light sensor through ECU-IG fuse. Voltage is applied at all times
to TERMINAL 4 of the automatic light sensor through DOME fuse. and to TERMINAL 10 of the automatic light control relay through the headlight
relay coil.
AUTOMATIC LIGHT CONTROL
When the light control SW is in auto position, if the automatic light sensor detects a decrease in the ambient light (to between 80 and 400 lux), the
automatic light sensor is activated. about 5 seconds after it is activated, current flows from TERMINAL 9 of the sensor to TERMINAL 15 of the light
control SW to TERMINAL 16 to Ground, lighting up the headlight and taillight.
If the Ambient light Drop below 80 Lux, the Automatic light sensor is activated and about 3 Seconds later current flows from TERMINAL 9 of the
sensor to TERMINAL 15 of the light control SW to TERMINAL 16 to GROUND, Lighting up the Headlight and Taillight.
When the light control SW is at Auto position and activation of the automatic light sensor has turned ON the Headlight and Taillights, if the Automatic
light sensor detects ambient light above 800 Lux, the sensor is Turned OFF after about 5 Seconds. So the current from TERMINAL 9 of the sensor to
TERMINAL 15 of light control SW stop, and the Headlight and Taillight Turn OFF.
