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Home >> Toyota >> 2021 >> 4Runner Limited, RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) - Service Information >> Brake Booster >> Inspection [08/2015 - ] >> Procedure

Inspection [08/2015 - ]: Procedure

  1. INSPECT BRAKE VACUUM CHECK VALVE ASSEMBLY 
    1. Check that there is ventilation from the booster to the engine and no ventilation from the engine to the booster.
      GTY581552Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Ventilation
      *b No Ventilation

      If the result is not as specified, replace the brake vacuum check valve assembly.