On-Vehicle Inspection [12/2012 - ]: Procedure

CHECK BRAKE BOOSTER ASSEMBLY

GTY380990

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	CORRECT
*b	INCORRECT
*c	1st
*d	2nd
*e	3rd

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.
  If the pedal is not as specified, check the check valve.
  
  If the check valve is normal, replace the booster.
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.

Operation check

Stop the engine.

GTY141313

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Depress the pedal several times and check that there is no change in the pedal reserve distance.

GTY141319

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.