Audible Warning Device: Description and Operation

System Outline

Key Reminder System
If the driver door is opened with the ignition SW set at the ACC or OFF position and the ignition key remained inserted into the key cylinder (The unlock warning SW is on), the signal from the unlock warning SW is input to TERMINAL (D) 21 of the body ECU and the signal from the door courtesy SW LH is input to TERMINAL (B) 14 of body ECU. As a result, through communication control of the body ECU etc. the buzzer in the combination meter goes on to warn the driver that the ignition key is still inserted.