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Home >> Lexus >> 2003 >> RX 300 AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - Diagnosis >> Circuit Inspection >> Pattern Select Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. Check pattern select switch. 

    PREPARATION: 

    Disconnect the pattern select switch connector.

    CHECK: 

    Check continuity between terminals 1 and 2 of pattern select switch connector when the select switch is set to SNOW positions.

    OK: 

    PATTERN SELECT SWITCH CONTINUITY

    Switch condition Tester connection Specified condition
    SNOW 3 - 4 Continuity

    If the continuity is not as specified, replace the switch.

    Fig 1: Identifying Terminals Of Pattern Select Switch Connector
    G03381618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Replace pattern select switch. 
    2. OK: Go to next step. 
  2. Check harness and connector between pattern select switch and body ECU, pattern select switch and body ground (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG: Repair or replace the harness or connector. 
    2. OK: Proceed to next circuit inspection shown on problem symptoms table (See  PROBLEM SYMPTOMS TABLE  ). 
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