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Seat Heater Control: Inspection

  1. INSPECT FRONT SEAT HEATER CONTROL LH 
    1. Disconnect the seat heater control LH connector.
      Fig 1: Identifying Connectors
      G05321133Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      Resistance 

      FRONT SEAT HEATER CONTROL LH RESISTANCE

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

      Voltage 

      FRONT SEAT HEATER CONTROL LH VOLTAGE

      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
      Fig 2: Identifying Front Seat Heater Control LH Connector Terminals
      G05321134Courtesy 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 

      FRONT SEAT HEATER CONTROL LH VOLTAGE

      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
  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 

      FRONT SEAT HEATER CONTROL RH RESISTANCE

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

      Voltage 

      FRONT SEAT HEATER CONTROL RH VOLTAGE

      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
      Fig 3: Identifying Front Seat Heater Control RH Connector Terminals
      G05321135Courtesy 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 

      FRONT SEAT HEATER CONTROL RH VOLTAGE

      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
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