The technician should have a thorough knowledge of the brake system operation and accepted general braking guidelines in order to detect any problems.
Select a road that is reasonably smooth and level. Gravel or bumpy roads are not suitable because the surface does not allow the tires to grip the road equally. Avoid crowned roads.
A key factor in evaluating brake concerns is the deceleration rate. This varies from vehicle to vehicle and with changes in operating conditions. It is evident how well the brakes are working after just a few applications.
For low or spongy brake pedal concerns:
For a slow or incomplete brake pedal return concern:
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.
|Visual Inspection Chart|
|Wheel speed sensor HCU Incorrectly inflated tires Ford specified steering components, suspension components and tire size Wheel speed sensor ring||Battery junction box (BJB) fuse(s) 11 (30A) 21 (20A) 29 (10A) (vehicles built after 11/2004) Central junction box (CJB) fuse 46 (7.5A) (vehicles built before 11/2004) Circuitry ABS module Traction control switch Wheel speed sensor|