Pinpoint Test B: Vibration When Brakes Are Applied

B: VIBRATION WHEN BRAKES ARE APPLIED

B1: ROAD TEST VEHICLE
1. Road test the vehicle between 40-80 km/h (25-50 mph) without applying brakes.
^ Is the vibration present?
-> Yes
TEST for noise vibration and harshness. REPEAT road test if necessary.
-> No
Go to [B2]

B2: CHECK FOR BRAKE VIBRATION
1. Road test the vehicle between 40-80 km/h (25-50 mph) with light and medium application on the brake pedal.
^ Is a vibration present?
-> Yes
CHECK the brake caliper mounting bolts and wheel hub nuts and TIGHTEN as necessary. CHECK the balance of all road wheels and REPAIR as necessary. CHECK the brake discs for excessive wear, runout, thickness variation or cracks. INSTALL new brake discs and brake pads as necessary. Go to [B3]
-> No
Vehicle is OK.

B3: IS VIBRATION STILL PRESENT UNDER BRAKE APPLICATION?
1. Road test the vehicle between 40-80 km/h (25-50 mph) with light and medium application on the brake pedal.
^ Is a vibration present?
-> Yes
CHECK for wear or failure of steering bushes. CHECK for wear or failure of steering ball joints. CHECK for wear or failure of front wheel bearings, suspension bushes and ball joints. CHECK for wear or failure of rearwheel bearings, suspension bushes and ball joints.
-> No
Vehicle is OK.