Headlamp: Description and Operation

INTRODUCTION TO LIGHT REMINDER ALARM DIAGNOSIS
A tone alarm-ECU or ETACS-ECU is mounted in all vehicles. This tone alarm-ECU or ETACS-ECU has a light reminder alarm function.

The light reminder alarm function alerts the driver that the lights have not been turned OFF. If the following symptoms occur, the system may be malfunctioning.
- When the tone alarm does not stop sounding when the ignition key is turned to the "ON" position.
- When the tone alarm does not stop sounding when the lighting switch is turned "OFF."
- When the tone alarm does not stop sounding when the driver's door is closed.
- When the tone alarm does not sound when the ignition key is inserted ("OFF" position), the lighting switch is turned to the "ON" position ("HEAD" or "TAIL" position), and the driver's door is opened.