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HOMESERVICE MANUALSLEXUS2005ES 330REPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTSEATSFRONT POWER SEAT CONTROL SYSTEM (W/MEMORY) - DIAGNOSTICSMEMORY SWITCH CIRCUITINSPECTION PROCEDURE
2005 Lexus ES 330

Inspection Procedure

2005 Lexus ES 330SECTION Inspection Procedure
  1. INSPECT SEAT MEMORY SWITCH 
    1. Disconnect the seat memory switch connector.
    2. Measure the resistance according to the value (s) in the table below.

    Standard: 

    CHECKING RESISTANCE

    Tester Connection Condition Specified Condition
    1 (E) -4 (1) SW1 switch pushed Below 1 Ω
    1 (E) -3 (2) SW2 switch pushed Below 1 Ω
    1 (E) -2 (MMRY) SET switch pushed Below 1 Ω

    NG: REPLACE SEAT MEMORY SWITCH 

    Fig 1: Locating Memory Switch Connector
    G02937357Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - SEAT MEMORY SWITCH) 
    1. Disconnect the front power seat switch connector.
    2. Measure the resistance according to the value (s) in the table below.

    Standard: 

    Driver Side: 

    CHECKING RESISTANCE

    Tester Connection Condition Specified Condition
    D18-1 (E) - Body ground Always Below 1 Ω
    D18-2 (MMRY) - M6-5 (MMRY) Always Below 1 Ω
    D18-3 (2) - M6-6 (SW2) Always Below 1 Ω
    D18-4 (1) - M6-2 (SW1) Always Below 1 Ω

    Front Passenger Side: 

    CHECKING RESISTANCE

    Tester Connection Condition Specified Condition
    S24-1 (E) - Body ground Always Below 1 Ω
    S24-2 (MMRY) - M8-5 (MMRY) Always Below 1 Ω
    S24-3 (2) - M8-6 (SW2) Always Below 1 Ω
    S24-4 (1) - M8-2 (SW1) Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Locating Wire Harness Connector
    G02937358Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.