On-Vehicle Inspection

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BRAKE BOOSTER ASSEMBLY
1. Airtightness check.
  1. Start the engine and stop it after 1 or 2 minutes. Slowly depress the brake pedal several times.
  2. Make sure the booster is airtight. Check that the distance the pedal can be depressed decreases gradually in correlation with each subsequent press of the pedal. See Fig 1.
    If the pedal is not as specified, check the check valve.
    
    If the check valve is normal, replace the booster.
    
    Fig 1: Checking Brake Booster Assembly
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Start the engine. Depress and hold down the pedal, and stop the engine.
  4. Make sure the booster is airtight. Hold the pedal for 30 seconds and check that there is no change in the pedal reserve distance.
    If the pedal is not as specified, check the check valve.
    
    If the check valve is normal, replace the booster.
2. Operation check.
  1. Stop the engine.
  2. Depress the pedal several times and check that there is no change in the pedal reserve distance.
    
    Fig 2: Depressing Pedal Several Times
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Depress and hold down the pedal, and start the engine. Check that the pedal can only be depressed slightly.
    If the pedal is not as specified, check the check valve.
    
    If the check valve is normal, replace the booster.
    
    Fig 3: Holding Down Pedal
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK BRAKE VACUUM CHECK VALVE ASSEMBLY
1. Check the check valve.
  1. Slide the clip and disconnect the vacuum hose.
  2. Remove the check valve from the booster.
  3. Check that there is ventilation from the booster to the engine, and no ventilation from the engine to the booster.
    If the results are not as specified, replace the check valve assembly.
    
    Fig 4: Checking Check Valve
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002