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Air Pump: Inspection

  1. INSPECT AIR PUMP ASSEMBLY 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 0.4 to 1.0 Ω
      1 - Body ground Always 10 kΩ or higher
      2 - Body ground
      Fig 1: Inspecting Air Pump Assembly
      G05637908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the result is not as specified, replace the air pump assembly.

    2. Check the operation of the air pump.
      1. Check that air does not flow from port A to port B.
        Fig 2: Checking Operation Of Air Pump
        G05637909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Apply battery voltage to the connector, and check the air pump operation.

        OK 

        VOLTAGE SPECIFICATION

        Measurement Condition Specified Condition
        Battery positive (+) → Terminal 2
        Battery negative (-) → Terminal 1        		 Air flows from port A to port B
        Fig 3: Applying Battery Voltage To Connector
        G05637910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        If the result is not as specified, replace the air pump assembly.

        NOTE:
        • Do not operate the air pump continuously for 2 minutes or more.
        • When operating the air pump, wait 5 minutes until the pump has cooled down between each operation. If the pump has not cooled down sufficiently, the motor will burn out.
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