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SYMPTOM PROCEDURES SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR 54B-341 Step 25. Retest the system. Check that the turn-signal lamps illuminate normally. Q: Is the check result normal? YES : The trouble can be an intermittent malfunction (Refer to GROUP 00 − How to Cope with Intermittent Malfunction NO : Replace the rear turn-signal lamp assembly. Inspection Procedure N-4: The turn-signal indicator lamp does not illuminate. CAUTION Whenever the ECU is replaced, ensure that the COMMENTS ON TROUBLE SYMPTOM If the turn-signal indicator lamp does not illuminate POSSIBLE CAUSES • The CAN bus line is defective. • The combination meter may be defective • The ETACS-ECU may be defective • Damaged harness wires and connectors DIAGNOSIS PROCEDURE Step 1. Check that the hazard warning lamps Q: Is check result normal? YES : Go to Step 2. NO : First, repair the turn-signal lamp. Refer to Step 2. MUT-III CAN bus diagnostics. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus line (Refer to GROUP ). Step 3. MUT-III diagnosis code Q: Is the diagnosis code set? YES : Refer to diagnosis code chart . NO : Go to Step 4. Step 4. MUT-III actuator test − Combination ). Q: Is the check result normal? YES : Replace the ETACS-ECU. NO : Replace the combination meter. INPUT SIGNAL ETACS-ECU COMBINATION CAN COMMUNICATION LINE CAN COMMUNICATION LINE · TURN-SIGNAL LAMP SWITCH Turn-Signal Indicator Lamp Circuit |