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Home >> Lexus >> 2000 >> SC 400 >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> System Tests >> Washer Motor Circuit

Washer Motor Circuit

  1. Disconnect 3-pin washer motor connector. Turn ignition switch to ON position. Measure voltage between terminal No. 2 (Blue wire) and ground. See WIRING DIAGRAMS . If battery voltage is present, go to next step. If battery voltage is not present, check wire harness, connectors and 20-amp WIPER fuse located in instrument panel junction block, behind left kick panel. Repair or replace as necessary. Retest system operation.
  2. Turn ignition switch to OFF position. Check continuity between terminal No. 1 (Green/Red wire) and ground with washer switch on (pushed in). If continuity exists, check washer motor. See WASHER MOTOR  under COMPONENT TESTS. Replace washer motor as necessary. Retest system operation. If continuity does not exist, repair open in Green/Red wire between washer motor and wiper/washer switch. Retest system operation.