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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> Body & Frame >> Seats >> Seats - Seat Switches, Motors, Lumbar & Heater Assemblies >> REAR SEAT CUSHION HEATER (for Power Seat) >> Inspection

REAR SEAT CUSHION HEATER (for Power Seat): Inspection

  1. INSPECT REAR SEAT CUSHION HEATER ASSEMBLY LH 
    1. Check the rear wing outer heater LH.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 1: Identifying Rear Wing Outer Heater Connectors (LH)
        G04953237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        TREAR SEAT CUSHION HEATER ASSEMBLY LH

        Tester Connection Condition Specified Condition
        1-2 17 to 23°C
        (63 to 73°F)        		 15.4 to 18.9 Ω

        If the result is not as specified, replace the rear seat cushion cover.

    2. Check the rear wing inner heater LH.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 2: Identifying Rear Wing Inner Heater Connectors (LH)
        G04953238Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        REAR WING INNER HEATER LH

        Tester Connection Condition Specified Condition
        1-2 17 to 23°C
        (63 to 73°F)        		 15.4 to 18.9 Ω

        If the result is not as specified, replace the rear seat cushion cover.

    3. Check the rear seat cushion heater LH.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 3: Identifying Rear Seat Cushion Heater Connectors (LH)
        G04953239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        REAR SEAT CUSHION HEATER LH

        Tester Connection Condition Specified Condition
        A1-A3 17 to 23°C
        (63 to 73°F)        		 4.8 to 5.9 Ω
        A1-B2
        A1-C2        		 Always Below 1 Ω
        A3-B1
        A3-C1        		 Always Below 1 Ω

        If the result is not as specified, replace the rear seat cushion cover.

  2. INSPECT REAR SEAT CUSHION HEATER ASSEMBLY RH 
    1. Check the rear wing outer heater RH.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 4: Identifying Rear Wing Outer Heater Connectors (RH)
        G04953240Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        REAR SEAT CUSHION HEATER ASSEMBLY RH

        Tester Connection Condition Specified Condition
        1-2 20°C (68°F) 15.4 to 18.9 Ω

        If the result is not as specified, replace the rear seat cushion cover.

    2. Check the rear wing inner heater RH.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 5: Identifying Rear Wing Inner Heater Connectors (RH)
        G04953241Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        REAR WING INNER HEATER RH

        Tester Connection Condition Specified Condition
        1-2 20°C (68°F) 15.4 to 18.9 Ω

        If the result is not as specified, replace the rear seat cushion cover.

    3. Check the rear seat cushion heater RH.
      1. Measure the resistance according to the value(s) in the table below.
        Fig 6: Identifying Rear Seat Cushion Heater Connectors (RH)
        G04953242Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        REAR SEAT CUSHION HEATER RH

        Tester Connection Condition Specified Condition
        A1-A3 17 to 23°C
        (63 to 73°F)        		 4.8 to 5.9 Ω
        A1-B2
        A1-C2        		 Always Below 1 Ω
        A3-B1
        A3-C1        		 Always Below 1 Ω

        If the result is not as specified, replace the rear seat cushion cover.

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