1.Light reminder buzzer automotive system operation
Light control switch in TAIL or HEAD position
Ignition switch in ACC or LOCK position
Driver’s door open
If the above conditions are satisfied, current stops flowing to terminal A of the combination meter. And the driver door courtesy switch is moved to the ON position, the condition between terminal B and ground becomes continuity.
When this happens, the ECU in the combination meter turns Tr on. Current flows between terminals C and D of the combination meter and a buzzer sounds.
After the light reminder buzzer system is activated, it can be turned off and the buzzer stopped by moving the light control switch to the OFF position or the ignition switch to the ON position.
In the models equipped with the key reminder system, since the system functions by priority, when the driver’s door is opened with the key inserted into the ignition key cylinder, the key reminder buzzer sounds.
2. Light auto turn-off system operation
With the taillights or headlights on (ignition switch in ON position, light control switch in TAIL or HEAD position), if the ignition switch is moved from the ON position to the ACC or LOCK position and the driver’s door is opened, current will stop flowing to terminal A of the integration relay. The driver door courtesy switch will turn ON and the condition between terminal B and ground becomes continuity. When this happens, the IC in the integration relay turns Tr1 and Tr2 off.
Current stops flowing between terminals C and D, between terminals E and F, and the taillights and headlights go off automatically.
After the light auto turn-off system is activated, it can be turned off and the taillights and headlights turned on again by moving the ignition switch to the ON position if the light control switch is in the TAIL or HEAD position.