Light Auto Turn Off System
System Outline1. Normal Lighting Operation
With the light control SW turned to TAIL position, a signal is input into TERMINAL (D) 17 of the body ECU. Due to this signal, the current flowing to TERMINAL 7 of the body ECU flows to TERMINAL (D) 17 to TERMINAL 18 of the light control SW to TERMINAL 12 to GROUND, and TAIL relay causes taillights to turn on.
With the light control SW turned to HEAD position, a signal is input into TERMINALS (D) 17 and (D) 23 of the body ECU. Due to this signal, the current flowing to TERMINAL 8 of the body ECU flows to TERMINAL (D) 23 to TERMINAL 20 of the light control SW to TERMINAL 12 to GROUND in the headlight circuit, and causes taillight, H-LP L relay and H-LP R relay to turn the lights on. The taillight circuit is same as above.
2. Light Auto Turn Off Operation
With light on and ignition SW turned off (Input signal goes to TERMINAL 15 of the body ECU), when the driver's door is opened (Input signal goes to TERMINAL (B) 14 of the body ECU), the body ECU operates and the current is cut off which flows from TERMINAL 7 of the body ECU to TERMINAL (D) 17 in taillight circuit and from TERMINAL 8 to TERMINAL (D) 23 in headlight circuit.
As a result, all lights are turned off automatically.