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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 

      TESTER CONDITION SPECIFIED CONDITION CHART

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

      Voltage 

      TESTER CONDITION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      2 (SWL) - 3 (E) Engine switch on (IG), seat heater switch OFF -->ON 0 V -->10 to 14 V
      5 (B) - 3 (E) Engine switch OFF -->on (IG) 0 V -->10 to 14 V
    3. Reconnect the seat heater control LH connector.
    4. Measure the voltage according to the value(s) in the table below.

      Voltage 

      TESTER CONDITION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      4 (THL) - 3 (E) Engine switch on (IG), seat heater switch volume 1 -->3 Gradual increase between 0 V -->10 to 14 V
    Fig 1: Identifying Front Seat Heater Control LH Connector Terminals
    G04051273Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 

      TESTER CONDITION SPECIFIED CONDITION CHART

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

      Voltage 

      TESTER CONDITION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      4 (SWR) - 3 (E) Engine switch on (IG), seat heater switch OFF -->ON 0 V -->10 to 14 V
      5 (B) - 3 (E) Engine switch OFF -->on (IG) 0 V -->10 to 14 V
    3. Reconnect the seat heater control RH connector.
    4. Measure the voltage according to the value(s) in the table below.

      Voltage 

      TESTER CONDITION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      4 (THR) - 3 (E) Engine switch on (IG), seat heater switch volume 1 -->3 Gradual increase between 0 V -->10 to 14 V
    Fig 2: Identifying Front Seat Heater Control RH Connector Terminals
    G04051274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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