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Seat Heater Control: Inspection

  1. INSPECT FRONT SEAT HEATER CONTROL LH 
    1. Disconnect the seat heater control LH connector.
    2. Measure the voltage and resistance according to the value (s) in the table below.

      Resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Condition Specified Condition
      6 (E) - Body ground Always Below 1 Ω

      Voltage 

      VOLTAGE REFERENCE CHART

      Tester Connection Condition Specified Condition
      1 (SWL) - 6 (E) Engine switch on (IG), seat heater switch OFF → ON 0 V → 10 to 14 V
      4 (B) - 6 (E) Engine switch OFF → on (IG) 0 V → 10 to 14V
      Fig 1: Identifying Front Seat Heater Control LH Connectors Terminals
      G05833329Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the seat heater control LH connector.
    4. Measure the voltage according to the value (s) in the table below.

      Voltage 

      VOLTAGE REFERENCE CHART

      Tester Connection Condition Specified Condition
      5 (THL) - 6 (E) Engine switch on (IG), seat heater switch volume 1 → 3 Gradual Increase between 0 V → 10 to 14 V
  2. INSPECT FRONT SEAT HEATER CONTROL RH 
    1. Disconnect the seat heater control RH connector.
    2. Measure the voltage and resistance according to the value (s) in the table below.

      Resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Condition Specified Condition
      6 (E) - Body ground Always Below 1 Ω

      Voltage 

      VOLTAGE REFERENCE CHART

      Tester Connection Condition Specified Condition
      1 (SWR) - 6 (E) Engine switch on (IG), seat heater switch OFF → ON 0 V → 10 to 14 V
      4 (B) - 6 (E) Engine switch OFF → on (IG) 0 V → 10 to 14V
      Fig 2: Identifying Front Seat Heater Control RH Connectors Terminals
      G05833330Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the seat heater control RH connector.
    4. Measure the voltage according to the value (s) in the table below.

      Voltage 

      VOLTAGE REFERENCE CHART

      Tester Connection Condition Specified Condition
      5 (THR) - 6 (E) Engine switch on (IG), seat heater switch volume 1 → 3 Gradual increase between 0 V → 10 to 14 V
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