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Home >> Lexus >> 2003 >> SC 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 366 (Rain Sensor System - Diagnosis) >> Circuit Inspection >> Front Washer Switch Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check WASHER fuse. 

    CHECK: 

    Check continuity of WASHER fuse.

    OK: 

    1. Continuity 
    1. NG : Replace WASHER fuse. 
    2. OK : Go to next step 
  2. Check wire harness between combination switch and wiper control ECU (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG : Repair or Replace wire harness. 
    2. OK : Proceed to next circuit inspection shown on problem symptom table. (See  PROBLEM SYMPTOMS TABLE  )