Automatic Light Control

With the Ignition SW turned ON, the current flows to TERMINAL 1 of the Automatic Light Control Relay through ECU-IG fuse, voltage is applied at all times to TERMINAL 2 of the Automatic Light Control Relay through DOME fuse, and to TERMINAL 5 of the Automatic Light Control Relay through the Headlight Relay coil.

AUTOMATIC LIGHT CONTROL RELAY
When the Light Control SW is in AUTO position, if the Automatic Light Control sensor detects a decrease in the ambient Light (to between 80 and 400 lux), the Automatic Light Control Relay is activated. About 5 seconds after it is activated, current flows from TERMINAL 4 of the Relay to TERMINAL 14 of the Light Control SW to TERMINAL 11 to GROUND, lighting up the headlight and taillight.

If the Ambient Light drop below 80 lux, the Automatic Light Control Relay is activated and about 3 seconds later current flows from TERMINAL 4 of the Relay to TERMINAL 14 of the Light Control SW to TERMINAL 11 to GROUND, lighting up the headlight and taillight.

When the Light Control SW is at AUTO position and activation of the Automatic Light Control Relay has turned ON the headlights and taillights. If the Automatic Light Control sensor detects ambient Light above 800 lux, the Relay is turned OFF after about 5 seconds. So the current from TERMINAL 4 of the Relay to TERMINAL 14 of Light Control SW stop, and the headlight and taillight turn OFF.