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INPUT SIGNAL PROCEDURES SMART WIRING SYSTEM (SWS) USING SWS MONITOR 54C-208 Inspection Procedure N-4: The column switch (lighting and turn-signal lamp switch) signal is not CAUTION Whenever the ECU is replaced, ensure that the COMMENTS ON TROUBLE SYMPTOM Input signal from the column switch (lighting and • Lamp reminder buzzer • Headlamp and tail lamp • Fog lamp • Turn signal lamp POSSIBLE CAUSES • Malfunction of the column switch • Damaged harness wires and connectors DIAGNOSIS PROCEDURE Step 1. Check the column switch connector. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the defective connector. Step 2. Check the column switch (lighting switch − Column switch . Q: Is the check result normal? YES : Go to Step 3. NO : Replace the column switch. Step 3. ECU check by using the SWS monitor • Ignition switch: OFF ECU TO BE CHECKED • COLUMN ECU OK: "OK" is displayed on the "COLUMN Q: Is the check result normal? YES : Go to Step 4. NO : Refer to Inspection Procedure A-2 ." Lighting Switch Input Circuit (DIMMER· PASSING SWITCH) (LIGHTING SWITCH) TURN-SIGNAL COLUMN SWITCH COLUMN-ECU Main Index Group TOC |