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Inspection [12/2019 - ]: Procedure

  1. INSPECT STEERING WHEEL SWITCH HOUSING 
    1. Resistance Check
      1. Measure the resistance according to the value(s) in the table below.
        GTY897441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Component without harness connected
        (Steering Wheel Switch Housing)
        - -

        Standard Resistance

        LIGHT SWITCH CIRCUIT

        Tester Connection Condition Specified Condition
        z6-2 (L_OFF) - z5-2 (L_OFF)*1 Always Below 1 Ω
        z6-14 (T) - z5-3 (T) Always Below 1 Ω
        z6-5 (H) - z5-4 (H) Always Below 1 Ω
        z6-10 (A) - z5-5 (A) Always Below 1 Ω
        z6-1 (HU) - z5-6 (HU) Always Below 1 Ω
        z6-6 (HF) - z5-7 (HF) Always Below 1 Ω
        z6-9 (TR) - z5-8 (TR) Always Below 1 Ω
        z6-3 (TL) - z5-9 (TL) Always Below 1 Ω
        z6-11 (CR) - z5-10 (CR) Always Below 1 Ω
        z6-4 (BFG) - z5-11 (BFG)*2 Always Below 1 Ω
        z6-12 (EL) - z5-13 (EL) Always Below 1 Ω

        *1: w/ Light Control Switch DRL OFF Position

        *2: w/ Front Fog Light

        WIPER SWITCH CIRCUIT

        Tester Connection Condition Specified Condition
        z7-10 (W_OFF) - z5-24 (W_OFF) Always Below 1 Ω
        z7-13 (+S) - z5-25 (+S) Always Below 1 Ω
        z7-11 (+1) - z5-26 (+1) Always Below 1 Ω
        z7-12 (+2) - z5-27 (+2) Always Below 1 Ω
        z7-14 (MIST) - z5-28 (MIST) Always Below 1 Ω
        z7-7 (C1R) - z5-29 (C1R) Always Below 1 Ω
        z7-6 (+1R) - z5-30 (+1R) Always Below 1 Ω
        z7-15 (WF) - z5-31 (WF) Always Below 1 Ω
        z7-9 (WR) - z5-32 (WR) Always Below 1 Ω
        z7-5 (E) - z5-33 (E) Always Below 1 Ω
        z7-4 (VR) - z5-34 (VR) Always Below 1 Ω

        If the result is not as specified, replace the steering wheel switch housing.