Lamp Control Module: Description and Operation
SYSTEM OUTLINEAutomatic Light Control
When the light control SW is set at AUTO, the automatic light control system automatically turns on or off the taillights and headlights depending on the brightness around the vehicle.
AUTOMATIC LIGHT CONTROL OPERATION
The automatic light control sensor converts the intensity of the illumination into frequency and inputs it to the theft deterrent ECU.When the light control SW is set at AUTO, the signal is input to TERMINAL A of the theft deterrent ECU.Through communication control of the body ECU etc.the taillights and headlights are automatically turned on or off.
- Turn on operation
When the theft deterrent ECU receives the frequency signal from the automatic light control sensor and determines that the brightness around the vehicle has decreased below a specified level, TERMINAL TAIL and HEAD of the theft deterrent ECU are controlled through communication control of the body ECU etc.As a result, the taillights and/or headlights light up as the TAIL relay and/or HEAD LP relay are turned on.
- Turn off operation
When the theft deterrent ECU receives the frequency signal from the automatic light control sensor and determines that the brightness around the vehicle has exceeded a specified level, TERMINAL TAIL and HEAD of the theft deterrent ECU are controlled through communication control of the body ECU etc.As a result, the taillights and/or headlights go off as the TAIL relay and/or HEAD LP relay are turned off.
Light Auto Turn Off
This system automatically turns off the taillights and/or headlights when the driver door is opened and closed to prevent the lights from remaining lit.
LIGHT AUTO TURN OFF OPERATION
- Taillights ON
If the ignition SW is turned from ON to OFF with the taillights turned on (The light control SW is set at TAIL), the signal is input to TERMINAL IG of the theft deterrent ECU.At this time, if the driver door is opened, the signal is input from the door courtesy SW front LH to TERMINAL DCTY of the body ECU.After that, TERMINAL TAIL of the theft deterrent ECU is controlled through communication control of the body ECU etc.to turn off the TAIL relay.As a result, the current flowing into the taillights is cut off to turn off the taillights.
- Taillights and headlights ON
If the ignition SW is turned from ON to OFF with the taillights and headlights turned on (The light control SW is set at HEAD or AUTO), the signal is input to TERMINAL IG of the theft deterrent ECU.At this time, if any door is opened, the signal is input from the door courtesy SW to the body ECU.During this operation, the taillights and headlights are remained lit.When all doors and the luggage door are closed, the taillights and headlights are turned on for 30 sec., through communication control of the body ECU etc.After the set time has elapsed, a signal is input to TERMINAL TAIL and HEAD of the theft deterrent ECU, to turn off the TAIL relay and HEAD LP relay.As a result, the current flowing into the taillights and headlights is cut off to turn off the taillights and headlights.
If any door is opened during above operation, the taillights and headlights light up for 30 sec. again, and then go off after all the doors have been closed.
Additionally, if the vehicle is locked using the wireless door lock operation (Lock operation) while the taillights and headlights are being turned on for 30 sec., the taillights and headlights go off immediately.