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Inspection [10/2017 - ]: Procedure

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  1. INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY 
    1. Check the valve opening.

      HINT: 

      The valve opening temperature is inscribed on the water inlet with thermostat sub-assembly.

      GTY650561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Add 15 cc (0.9 cu. in.) of water to the water inlet with thermostat sub-assembly from the inlet pipe side.
        GTY821082Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Inlet Pipe Side
        *b Valve Side
      2. Confirm that water does not flow out from the valve side of the water inlet with thermostat sub-assembly.

        If water flows out from the valve side of the water inlet with thermostat sub-assembly, replace the water inlet with thermostat sub-assembly with a new one.

      3. Immerse the water inlet with thermostat sub-assembly in water that is between 92°C (198°F) and 96°C (205°F) for 5 minutes or more.
        NOTE:
        • Do not allow any water to come into contact with the connector of the water inlet with thermostat sub-assembly.
        • Make sure that the end of the inlet pipe of the water inlet with thermostat sub-assembly is not facing downward.
        • Make sure to immerse the water inlet with thermostat sub-assembly in the water as shown in the illustration.
        GTY776228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Connector
        *b Inlet Pipe
        Temperature Sensor
      4. Leave the water inlet with thermostat sub-assembly at ambient temperature for 5 minutes so that the valve closes.
        NOTE:

        Make sure that the end of the inlet pipe of the water inlet with thermostat sub-assembly is not facing downward.

        GTY786762Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Inlet Pipe
      5. Check that the water that was added to the water inlet with thermostat sub-assembly has completely flowed out.

        If the water that was added to the water inlet with thermostat sub-assembly has not completely flowed out, replace the thermostat sub-assembly with a new one.

    2. Check the resistance of the temperature sensor.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        1 - 2 Always 10.6 to 14.2 Ω

        If the result is not as specified, replace the water inlet with thermostat sub-assembly.

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