Operation CHARM: Car repair manuals for everyone.

Pinpoint Test E: the Pedal Goes Down Fast


E: THE PEDAL GOES DOWN FAST

E1: ROAD TEST VEHICLE
1. Road test and apply the brake pedal.
^ Is the brake pedal effort and brake pedal travel normal?
-> Yes
Vehicle is OK.
-> No
Go to [E2]

E2: CHECK BRAKE FLUID LEVEL
1. Check the brake master cylinder reservoir fluid level.
^ Is the fluid level within specification?
-> Yes
Go to [E3]
-> No
CHECK the brake master cylinder reservoir sealing points. ADD fluid and BLEED brake system. TEST the system for normal operation. REPEAT road test if necessary.

E3: CHECK BRAKE PEDAL TRAVEL-PRESSURIZE SYSTEM
1. Pump the brake pedal rapidly (five times).
^ Does the brake pedal travel build up and then hold?
-> Yes
BLEED the brake system. TEST the system for normal operation. REPEAT road test.
-> No
Go to [E4]

E4: CHECK FOR BRAKE SYSTEM LEAKS
1. Check for external brake system leaks.
^ Are leaks found?
-> Yes
REPAIR as necessary, ADD fluid and BLEED brake system. TEST the system for normal operation. REPEAT road test.
-> No
System is OK.