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DIAGNOSTIC TROUBLE CODE PROCEDURES SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR 54B-33 TROUBLE JUDGMENT The ETACS-ECU communicates with the column COMMENT ON TROUBLE SYMPTOM The column switch, the ETACS-ECU, connector(s), POSSIBLE CAUSES • Malfunction of the column switch • Malfunction of the ETACS-ECU • Damaged harness wires and connectors DIAGNOSIS PROCEDURE Step 1. MUT-III CAN bus diagnostics Use the MUT-III to diagnose the CAN bus lines. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus line (Refer to GROUP − Diagnosis FUSIBLE 26 IGNITION RELAY COLUMN Wire colour code COLUMN-ECU ETACS-ECU DIAGNOSIS FRONT SIDE Column Switch Power Supply and SWS Communication Circuit <RHD> |