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PTC Heater Assembly: Inspection: Inspection

  1. INSPECT PTC HEATER 
    1. Disconnect the connector from the PTC heater.
      Fig 1: Identifying Terminals Of A9 PTC Heater Connector
      GTY292745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      A9-1 (B) - A10-1 (E) Always Below 1 Ω
      A9-3 (B) - A10-2 (E) Always Below 1 Ω

      If the resistance is not as specified, replace the PTC heater.

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