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Home >> Toyota >> 2019 >> Sienna Limited, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) (Service Information) >> Vacuum Pump >> On-Vehicle Inspection [08/2016 - ] >> Procedure

On-Vehicle Inspection [08/2016 - ]: Procedure

  1. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [12/2015 - ]

  2. REMOVE FRONT OUTER COWL TOP PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 10

  3. OPERATION CHECK 
    1. Slide the clip and disconnect the air tube from the vacuum pump assembly.
    2. Connect the hose of the vacuum gauge to the vacuum pump assembly.
      GTY724257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Vacuum Gauge
      *b Plug
    3. Start the engine and warm it up for more than 2 minutes.
    4. With the engine idling, check the vacuum of the vacuum pump assembly.

      Standard Pressure

      More than 86.7 kPa (650 mmHg, 25.6 in.Hg)

      If necessary, replace the vacuum pump assembly.

      HINT: 

      Always perform this operation check procedure after replacing the vacuum pump assembly.

    5. Remove the vacuum gauge from the vacuum pump assembly.
    6. Connect the air tube to the vacuum pump assembly, and slide the clip to secure it.
  4. INSTALL FRONT OUTER COWL TOP PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 11

  5. INSTALL WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to INSTALLATION [12/2015 - ]

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