Initial Inspection and Diagnostic Overview

WINDSHIELD WIPER AND WASHER DIAGNOSIS

The windshield wiper and washer are controlled by the Simplified Wiring System
(SWS). For troubleshooting, refer to SWS Diagnosis Prior to Troubleshooting.
NOTE:
Even when the ETACS-ECU has failed, the windshield wiper can work at low speed as fail-safe mode.
(Normally, the windshield wiper operates when the ignition switch is at the "ACC" position.
But, if it enters the fail-safe mode, the wiper can operate only when the ignition switch is at the "ON" position.)