Interior Light Automatic Shut-off Function

This function prevents the battery from being discharged when the door is open or the interior lights (dome light and rear personal lights and foot lights and truck light) remains on with the ignition switch at the "LOCK" (OFF) position. The ETACS-ECU turns on its "keep" relay to switch off the battery power supply to the interior lights when the interior light loaded signal, driver's or passenger's door switches or, trunk lid latch switch remain on for approximately 30 minutes with the ignition switch ACC signal is OFF. Then the interior lights will be switched off. If the ignition switch is turned on again, the ETACS-ECU turns on its "keep" relay to illuminate the interior lights.