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INPUT SIGNAL PROCEDURES SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR 54B-501 Inspection Procedure Q-19: The driver's seat belt switch signal is not received. <RH drive vehicles> CAUTION Whenever the ECU is replaced, ensure that the COMMENTS ON TROUBLE SYMPTOM Input signal from the driver's seat belt switch signal is POSSIBLE CAUSES • Malfunction of the driver's seat belt switch • Malfunction of the ETACS-ECU • Malfunction of the combination meter • Damaged harness wires and connectors DIAGNOSTIC PROCEDURE Step 1. MUT-III CAN bus diagnostics Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus line (Refer to GROUP − Diagnosis Step 2. MUT-III diagnosis code Q: Is the diagnosis code set? YES : Diagnose the combination meter (Refer to GROUP 54A − Combination meter NO : Go to Step 3. COMBINATION METER SEAT BELT Wire colour code Driver's Seat Belt Switch Input Circuit <RHD> ETACS-ECU CAN COMMUNICATION LINE CAN COMMUNICATION LINE |