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SYMPTOM PROCEDURES TSB Revision SIMPLIFIED WIRING SYSTEM (SWS) 54B-427 INTERIOR LIGHT GENERAL DESCRIPTION CONCERNING THE INTERIOR LIGHT M1549021800106 The following ECUs affect the functions and control Interior light control function The ETACS-ECU controls the interior lights by turn- • When a door is opened with the ignition switch off, the interior lights up to a luminance of 100 • When a door is opened with the ignition switch ON, the interior lights up at a luminance of 100 • When the ignition key is removed with all doors closed, the interior lights up at a luminance of 100 • To check keyless entry operations more easily, the interior lights is flashed once when the doors NOTE: The dimmer function can be customized on . NOTE: The dotted lines indicate that lighting mode FUNCTION CONTROL ECU Interior light control function ETACS-ECU Interior light automatic-shutoff function ETACS-ECU Ignition key hole illumination light function ETACS-ECU Door ajar indicator ETACS-ECU Seat belt indicator ETACS-ECU AC101555AF ON ACC LOCK (OFF) Key removed ON (Any door is open) OFF (All doors are closed) LOCK OFF UNLOCK 100 % 65 % 0 % t1: 30 seconds t1 t1 t2 Ignition switch Door switch Keyless entry sytem Interior light intensity |