SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA20064RUNNER SR5, 4.7 T, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMESEATSSEATSEAT HEATER SYSTEMINSPECTION
2006 Toyota 4Runner SR5, 4.7 T, AWD

Seat Heater System: Inspection

2006 Toyota 4Runner SR5, 4.7 T, AWDSECTION Inspection
  1. INSPECT SEAT HEATER SWITCH LH 
    1. Check the resistance between the terminals when the switch is operated.

      Standard: 

      SWITCH CONDITION TABLE

      Tester Connection Switch Position Specified Condition
      3 -- 4 ON (MAX) Below 1 Ω
      5 -- 6 ON (MAX) Below 1 Ω
      - OFF 10 k Ω or higher
      4 -- 5 ON (MIN) Below 1 Ω
      1 -- 2 Illumination circuit Below 1 Ω
      Fig 1: Checking Resistance Between Terminals When Switch Is Operated
      G04332199Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect the seat heater switch indicator.
      1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 1.
      2. Push the seat heater switch ON and check that the indicator lights up.

        If the result is not as specified, replace the seat heater switch and inspect the circuits connected to the other parts.

    3. Inspect the seat heater switch illumination.
      1. Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 5.
      2. Check that the illumination lights up.

        If the result is not as specified, replace the seat heater switch or bulb.

        Fig 2: Inspecting Seat Heater Switch Indicator
        G04332200Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT SEAT HEATER SWITCH RH 
    1. Check the resistance between the terminals when the switch is operated.

      Standard: 

      SWITCH CONDITION TABLE

      Tester Connection Switch Position Specified Condition
      3 -- 4 ON (MAX) Below 1 Ω
      5 -- 6 ON (MAX) Below 1 Ω
      - OFF 10 k Ω or higher
      4 -- 5 ON (MIN) Below 1 Ω
      1 -- 2 Illumination circuit Below 1 Ω
    2. Inspect the seat heater switch indicator.
      1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 1.
      2. Push the seat heater switch ON and check that the indicator lights up.

        If the result is not as specified, replace the seat heater switch and inspect the circuits connected to the other parts.

        Fig 3: Inspecting Seat Heater Switch Indicator
        G04332201Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Inspect the seat heater switch illumination.
      1. Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 5.
      2. Check that the illumination lights up.

        If the result is not as specified, replace the seat heater switch or bulb.

        Fig 4: Inspecting Seat Heater Switch Illumination
        G04332202Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT FRONT SEAT BACK HEATER ASSY LH 
    1. Check the seatback heater resistance.

      Standard: 

      SWITCH CONDITION TABLE

      Tester Connection Specified Condition
      1 -- 2 Below 1 Ω

      If the result is not as specified, replace the seatback cover assy.

      Fig 5: Inspecting Front Seat Back Heater Assy LH
      G04332203Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT FRONT SEAT BACK HEATER ASSY RH 
    1. Check the seatback heater resistance.

      Standard: 

      SWITCH CONDITION TABLE

      Tester Connection Specified Condition
      1 -- 2 Below 1 Ω

      If the result is not as specified, replace the seatback cover assy.

      Fig 6: Inspecting Front Seat Back Heater Assy RH
      G04332204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT FRONT SEAT CUSHION HEATER ASSY LH 
    1. Check the seat cushion heater resistance between the terminals.

      Standard: 

      SWITCH CONDITION TABLE

      Tester Connection Specified Condition
      A1 - B2 Below 1 Ω
      A4 - B2 Below 1 Ω
      A1 - A4 Below 1 Ω
      A2 - A3 Below 1 Ω
      B1 - B2 Below 1 Ω

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

      Fig 7: Inspecting Front Seat Cushion Heater Assy LH
      G04332205Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT FRONT SEAT CUSHION HEATER ASSY RH 
    1. Check the seat cushion heater resistance between the terminals.

      Standard: 

      SWITCH CONDITION TABLE

      Tester Connection Specified Condition
      A1 - B2 Below 1 Ω
      A4 - B2 Below 1 Ω
      A1 - A4 Below 1 Ω
      A2 - A3 Below 1 Ω
      B1 - B2 Below 1 Ω

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

      Fig 8: Inspecting Front Seat Cushion Heater Assy RH
      G04332206Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.