SEAT HEATER SYSTEM ON-VEHICLE INSPECTION


  1. INSPECT SEAT HEATER CONTROL SUB-ASSEMBLY LH


    1. A00942HE06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Seat Heater Control Sub-assembly LH)

      Disconnect the b7 heater control connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      b7-6 (E) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      b7-1 (SWL) - b7-6 (E)

      Ignition switch ON

      Seat heater switch LH off

      		 Below 1 V

      Ignition switch ON

      Seat heater switch LH on

      		 11 to 14 V
      b7-4 (B) - b7-6 (E) Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

    4. Connect the b7 heater control connector.

    5. A0097NCE01
      Text in Illustration
      *a

      Component with harness connected

      (Seat Heater Control Sub-assembly LH)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      b7-5 (THL) - Body ground

      Ignition switch ON

      Seat heater switch LH on, MIN → MAX

      		 Gradual increase between value below 1 V and value from 11 to 14 V

      If the result is not as specified, the seat heater control may have a malfunction.

  2. INSPECT SEAT HEATER CONTROL SUB-ASSEMBLY RH


    1. A00942HE07
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Seat Heater Control Sub-assembly RH)

      Disconnect the a7 heater control connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      a7-6 (E) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      a7-1 (SWR) - a7-6 (E)

      Ignition switch ON

      Seat heater switch RH off

      		 Below 1 V

      Ignition switch ON

      Seat heater switch RH on

      		 11 to 14 V
      a7-4 (B1) - a7-6 (E) Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

    4. Connect the a7 heater control connector.

    5. A0097NCE02
      Text in Illustration
      *a

      Component with harness connected

      (Seat Heater Control Sub-assembly RH)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      a7-5 (THR) - Body ground

      Ignition switch ON

      Seat heater switch RH on, MIN → MAX

      		 Gradual increase between value below 1 V and value from 11 to 14 V

      If the result is not as specified, the seat heater control may have a malfunction.