Suzuki GRAND VITARA JB416, Service Manual

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4A-3 Brake Control System and Diagnosis:
Diagnostic Information and Procedures
Brakes Symptom Diagnosis
S5JB0E4104002
Condition Possible cause Correction / Reference Item
Not enough braking force Brake fluid leakage from brake lines Locate leaking point and repair.
Brake disc or pads stained with fluid Clean or replace.
Overheated brakes Determine cause and repair.
Poor contact of shoes on brake drum Repair for proper contact.
Brake shoes linings stained with fluid or
wet with water Replace.
Badly worn brake shoe linings Replace.
Defective wheel cylinders Repair or replace.
Malfunctioning caliper assembly Repair or replace.
Air in system Bleed system.
Malfunctioning ABS (ESP
®
), if equipped Check system and replace as necessary.
Brake pull
(Brakes not working in
unison) Pad or shoe linings are wet with water or
stained with fluid in some brakes Replace.
Drum-to-shoe clearance out of
adjustment in some brakes.
(malfunctioning auto adjusting
mechanism) Check for inoperative auto adjusting
mechanism.
Drum is out of round in some brakes Replace.
Wheel tires are inflated unequally Inflate equally.
Malfunctioning wheel cylinders Repair or replace.
Disturbed front end alignment Adjust as prescribed.
Unmatched tires on same axle Tires with approximately the same amount of
tread should be used on the same axle.
Restricted brake pipes or hoses Check for soft hoses and damaged lines.
Replace with new hoses and new brake piping.
Malfunctioning caliper assembly Check for stuck or sluggish pistons and proper
lubrication of caliper slide bush.
Loose suspension parts Caliper should slide. Check all suspension
mountings.
Loose calipers Check and torque bolts to specifications.
Brake locked
(For vehicles equipped
with ABS (ESP
®
))
Malfunctioning ABS (ESP
®
), if equipped Check system and replace as necessary.
Excessive pedal travel
(Pedal stroke too large) Partial brake system failure Check brake systems and repair as necessary.
Insufficient fluid in master cylinder
reservoirs Fill reservoirs with approved brake fluid. Check
for leaks and air in brake systems. Check
warning light. Bleed system if required.
Air in system (pedal soft / spongy) Bleed system.
Rear brake system not adjusted
(malfunctioning auto adjusting
mechanism) Repair auto adjusting mechanism. Adjust rear
brakes.
Bent brake shoes Replace brake shoes.
Worn rear brake shoes Replace brake shoes.
Dragging brakes
(A very light drag is
present in all disc brakes
immediately after pedal is
released) Master cylinder pistons not returning
correctly Replace master cylinder.
Restricted brake pipes or hoses Check for soft hoses or damaged pipes and
replace with new hoes and/or new brake pipes.
Incorrect parking brake adjustment on
rear brakes Check and adjust to correct specifications.
Weakened or broken return springs in
the brake Replace.
Sluggish parking-brake cables or
linkage Repair or replace.
Wheel cylinder or caliper piston sticking Repair as necessary.
Malfunctioning ABS (ESP
®
), if equipped Check system and replace as necessary.