Diagnostic Information And Procedures - Suzuki GRAND VITARA JB416 Service Manual

4A-3 Brake Control System and Diagnosis:
Brakes Symptom Diagnosis
Condition
Not enough braking force Brake fluid leakage from brake lines
Brake pull
(Brakes not working in
unison)
Brake locked
(For vehicles equipped
®
with ABS (ESP ))
Excessive pedal travel
(Pedal stroke too large)
Dragging brakes
(A very light drag is
present in all disc brakes
immediately after pedal is
released)

Diagnostic Information and Procedures

Possible cause
Brake disc or pads stained with fluid
Overheated brakes
Poor contact of shoes on brake drum
Brake shoes linings stained with fluid or
wet with water
Badly worn brake shoe linings
Defective wheel cylinders
Malfunctioning caliper assembly
Air in system
Malfunctioning ABS (ESP®), if equipped Check system and replace as necessary.
Pad or shoe linings are wet with water or
stained with fluid in some brakes
Drum-to-shoe clearance out of
adjustment in some brakes.
(malfunctioning auto adjusting
mechanism)
Drum is out of round in some brakes
Wheel tires are inflated unequally
Malfunctioning wheel cylinders
Disturbed front end alignment
Unmatched tires on same axle
Restricted brake pipes or hoses
Malfunctioning caliper assembly
Loose suspension parts
Loose calipers
Malfunctioning ABS (ESP®), if equipped Check system and replace as necessary.
Partial brake system failure
Insufficient fluid in master cylinder
reservoirs
Air in system (pedal soft / spongy)
Rear brake system not adjusted
(malfunctioning auto adjusting
mechanism)
Bent brake shoes
Worn rear brake shoes
Master cylinder pistons not returning
correctly
Restricted brake pipes or hoses
Incorrect parking brake adjustment on
rear brakes
Weakened or broken return springs in
the brake
Sluggish parking-brake cables or
linkage
Wheel cylinder or caliper piston sticking Repair as necessary.
Malfunctioning ABS (ESP®), if equipped Check system and replace as necessary.
Correction / Reference Item
Locate leaking point and repair.
Clean or replace.
Determine cause and repair.
Repair for proper contact.
Replace.
Replace.
Repair or replace.
Repair or replace.
Bleed system.
Replace.
Check for inoperative auto adjusting
mechanism.
Replace.
Inflate equally.
Repair or replace.
Adjust as prescribed.
Tires with approximately the same amount of
tread should be used on the same axle.
Check for soft hoses and damaged lines.
Replace with new hoses and new brake piping.
Check for stuck or sluggish pistons and proper
lubrication of caliper slide bush.
Caliper should slide. Check all suspension
mountings.
Check and torque bolts to specifications.
Check brake systems and repair as necessary.
Fill reservoirs with approved brake fluid. Check
for leaks and air in brake systems. Check
warning light. Bleed system if required.
Bleed system.
Repair auto adjusting mechanism. Adjust rear
brakes.
Replace brake shoes.
Replace brake shoes.
Replace master cylinder.
Check for soft hoses or damaged pipes and
replace with new hoes and/or new brake pipes.
Check and adjust to correct specifications.
Replace.
Repair or replace.
S5JB0E4104002