Pinpoint Test J: Excessive Brake Pedal Effort - Ford 2007 WQ Fiesta Repair Manual

206-00-24 Brake System
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General Information 206-00-24
DIAGNOSIS AND TESTING
TEST CONDITIONS DETAILSIRESU LTSIACTIONS
12: ROAD TEST THE VEHICLE
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Road test the vehicle and apply the brakes.
Are the brakes functioning correctly?
-+
Yes
Vehicle OK.
+
No
INSPECT individual wheel cylinders or
calipers for binding or sticking components.
INSTALL new components as necessary.
BLEED the brake system. REFER to: (206-00
Brake System
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General Information)
Brake System Bleeding (General Procedures),
Brake System Pressure Bleeding (General
Procedures).
TEST the system for normal operation.
PINPOINT TEST J : EXCESSIVE BRAKE PEDAL EFFORT
TEST CONDITIONS DETAILSIRESULTSIACTIONS
J1: CHECK BRAKE APPLICATION
With the engine off, apply and release the brake
pedal five times to deplete all vacuum from the
brake booster. Apply the brake pedal, hold with
light pressure. Start the engine.
Does the brake pedal hold?
+
Yes
GO to J2.
+
No
GO to J6.
52: CHECK BRAKE BOOSTER FOR LEAKS
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Run the engine at medium idle, release the
accelerator pedal and turn the engine off. Wait
90 seconds and apply the brakes. Two or more
brake applications should be power assisted.
Does the brake booster work?
+
Yes
Vehicle OK.
- +
No
GO to J3.
2006.0 Fiesta
1212006 G28494en