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INPUT SIGNAL PROCEDURES TSB Revision SIMPLIFIED WIRING SYSTEM (SWS) 54B-468 CIRCUIT OPERATION The ETACS-ECU operates the following equipment • Windshield wiper and washer • Interior light automatic shutoff function The ETACS-ECU receives information on the ignition . TECHNICAL DESCRIPTION (COMMENT) If the signal is not normal, the equipment and func- . TROUBLESHOOTING HINTS • The wiring harness or connectors may have loose, corroded, or damaged terminals, or termi- • The ETACS-ECU may be defective DIAGNOSIS Required Special Tool: • MB991223: Harness Set STEP 1. Check ETACS-ECU connector C-219 for loose, YES : Go to Step 2. to GROUP 00E, Harness Connector Inspection . If the equipment described in "CIRCUIT OPERATION" works normally, the input signal from AC305413 AG CONNECTOR: C-219 JUNCTION BLOCK SIDE JUNCTION BLOCK (REAR VIEW) |