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Inspection [12/2024 - ]: Procedure

  1. INSPECT VACUUM SWITCHING VALVE 
    1. Measure the resistance.
      1. Measure the resistance according to the value(s) in the table below.
        GTY1275890Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Component without harness connected
        (Vacuum Switching Valve)

        Standard Resistance

        Tester Connection Condition Specified Condition Result
        1 (+B) - 2 (ACM) 20°C (68°F) 37 to 44 Ω Ω
        1 (+B) - Body ground Always 10 kΩ or higher kΩ
        2 (ACM) - Body ground Always 10 kΩ or higher kΩ
    2. Check the vacuum switching valve operation.
      GTY1274296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Port (F)
      *b Port (E)
      *c Air filter
      1. Apply negative pressure of 67 kPa (500 mmHg, 19.7 in.Hg) absolute pressure to port (F).
      2. Check air flows from port (E) to the air filter.
      3. Apply auxiliary battery voltage across the terminals.
        GTY1272938Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Port (F)
        *b Port (E)
      4. Check air flows from port (E) to port (F).
    3. If the result is not as specified, replace the vacuum switching valve.
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