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SYMPTOM PROCEDURES SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR 54B-104 INSPECTION PROCEDURE F-5: The intermittent wiper interval can not be adjusted by operating the CAUTION Whenever the ECU is replaced, ensure that the COMMENTS ON TROUBLE SYMPTOM The column switch or the ETACS-ECU may be POSSIBLE CAUSES • Malfunction of the column switch • Malfunction of the ETACS-ECU • Damaged harness wires and connectors DIAGNOSIS PROCEDURE Step 1. Pulse check OK: The M.U.T.-III sounds or the voltmeter Q: Are the check result normal? All the signals are received normally. : Go to Step 2. The ignition switch (IG1) signal is not received. : Refer to Inspection Procedure N-1 "The ." The windshield wiper volume signal is not Refer to Inspection Procedure N-6 "The windshield wiper volume signal is not ." Step 2. Retest the system. OK: The intermittent wiper interval is Q: Is the check result normal? YES : The trouble can be an intermittent malfunction (Refer to GROUP 00 − How to use Troubleshooting/inspection Service − How to Cope with Intermittent ). NO : Replace the ETACS-ECU. WINDSHIELD WIPER INPUT SIGNAL ETACS-ECU Windshield Wiper Intermittent Volume Input Signal System switch Check condition Ignition switch (ACC) When turned from LOCK Windshield intermittent When the windshield Main Index Group TOC |