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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Seats >> Seats - Service Information (3 Of 3) >> REAR SEAT CUSHION HEATER (for Captain Seat Type) >> Inspection [12/2019 - ] >> Procedure

Inspection [12/2019 - ]: Procedure

  1. INSPECT SEAT HEATER ASSEMBLY (for LH Side) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY839555Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Seat Heater Assembly (for LH Side))

      Standard Resistance

      Tester Connection Condition Specified Condition
      F5-1 - F5-4 Seat heater temperature 20 °C (68 °F) 3.19 to 3.83 Ω
      F5-1 - C-1 Seat heater temperature 20 °C (68 °F) Below 1 Ω
      F5-6 - F5-7 Seat heater temperature 20 °C (68 °F) 11.9 to 12.3 Ω
      F5-4 - C-2 Seat heater temperature 20 °C (68 °F) Below 1 Ω
      C-1 - C-2 Seat heater temperature 20 °C (68 °F) 3.26 to 3.90 Ω
      F5-3 - F5-4 Seat heater temperature 20 °C (68 °F) Below 1 Ω

      If the result is not as specified, replace the seat heater assembly (for LH side).

  2. INSPECT SEAT HEATER ASSEMBLY (for RH Side) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY926482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Seat Heater Assembly (for RH Side))

      Standard Resistance

      Tester Connection Condition Specified Condition
      F1-1 - F1-4 Seat heater temperature 20 °C (68 °F) 3.19 to 3.83 Ω
      F1-1 - D-1 Seat heater temperature 20 °C (68 °F) Below 1 Ω
      F1-6 - F1-7 Seat heater temperature 20 °C (68 °F) 11.9 to 12.3 Ω
      F1-4 - D-2 Seat heater temperature 20 °C (68 °F) Below 1 Ω
      D-1 - D-2 Seat heater temperature 20 °C (68 °F) 3.26 to 3.90 Ω
      F1-3 - F1-4 Seat heater temperature 20 °C (68 °F) Below 1 Ω

      If the result is not as specified, replace the seat heater assembly (for RH side).