Automatic Light Control

With the ignition SW turned ON, current flows to TERMINAL 1 of the automatic light control sensor through ECU-IG fuse. Voltage is applied at all times to TERMINAL 6 of the automatic light control sensor through the taillight relay (Coil side), and to TERMINAL 5 of the sensor through the HEAD relay (Coil side) (USA) or through the daytime running light relay (Main) (Canada).

AUTOMATIC LIGHT CONTROL
When the light control SW is in AUTO position, if the automatic light control sensor detects a decrease in the ambient light (to between 90 and 475 lux), the automatic light control sensor is activated. About 5.8 seconds after it is activated, current flows from TERMINAL 4 of the sensor to TERMINAL 12 of the light control SW to TERMINAL 16 to GROUND, lighting up the headlights and taillights.

If the ambient light drops below 90 lux, the automatic light control sensor is activated and about 2.9 seconds later, current flows from TERMINAL 4of the sensor to TERMINAL 12 of the light control SW to TERMINAL 16to GROUND, lighting up the headlights and taillights.

When the light control SW is in AUTO position and activation of the automatic light control sensor has turned ON the headlights and taillights, if the automatic light control sensor detects the ambient light above 1000 lux, the sensor is turned OFF afier about 5.8 seconds. So the current from TERMINAL 4 of the sensor to TERMINAL 12 of the light control SW is cut off, and the headlights and taillights are turned OFF.