Suzuki Grand Vitara JB416 / JB420 (ESP model). Manual — part 48
4-1 Precautions:
Brakes
Precautions
Precautions
Precautions for Brakes
S5JB0E4000001
Suspension Caution
Refer to “Suspension Caution in Section 00 in related manual”.
Wheels and Tires Caution
Refer to “Wheels and Tires Caution in Section 00 in related manual”.
Brake Caution
Refer to “Brakes Caution and Note in Section 00”.
General Precautions
Refer to “General Precautions in Section 00 in related manual”.
Vehicle Lifting Points
Refer to “Vehicle Lifting Points in Section 0A in related manual”.
Fastener Caution
Refer to “Fastener Caution in Section 00 in related manual”.
Fastener Information
Refer to “Fastener Information in Section 0A in related manual”.
Brake Control System and Diagnosis: 4A-1
Brakes
Brake Control System and Diagnosis
General Description
Brakes Construction
S5JB0E4101001
When the foot brake pedal is depressed, hydraulic pressure is developed in the master cylinder (2) to actuate pistons
(two in front and four in rear).
The master cylinder is a tandem master cylinder. Brake pipes are connected to the master cylinder and they make two
independent circuits. One connects front right and rear left brakes and the other connects front left and rear right
brakes.
In this brake system, the disc brake type is used for the front wheel brake and a drum brake type (leading / trailing
shoes) for the rear brake.
The parking brake system is mechanical. It applies brake force to only rear wheels by means of the cable and
mechanical linkage system. The same brake shoes are used for both parking and foot brakes.
NOTE
The difference between RH steering vehicle and LH steering vehicle is the location of the brake master
and the brake booster only.
A
2
8
1
5
3
4
6
7
I5JB0A410001-02
1. Brake booster
4. Primary side
7. Parking brake cable
2. Master cylinder
5. ABS (ESP
®) hydraulic unit / control module assembly
8. 4-way joint
3. Secondary side
6. Parking brake lever
A: Forward
4A-2 Brake Control System and Diagnosis:
Front Brake Hose / Pipe Construction
S5JB0E4101002
I5JB0A410002-03
[A]: For LH steering vehicle
4. From ABS hydraulic unit to left front brake
9. Master cylinder fixing nut
[B]: For RH steering vehicle
5. ABS (ESP
®) hydraulic unit / control module
assembly
10. Brake joint bolt
1. From master cylinder primary to ABS hydraulic unit
6. Master cylinder
11. 4-way joint
2. From master cylinder secondary to ABS hydraulic unit
7. From ABS (ESP
®) hydraulic unit to left rear brake
: 18 N
⋅m (1.8 kgf-m, 13.0 lb-ft)
3. From ABS hydraulic unit to right front brake
8. From ABS (ESP
®) hydraulic unit to right rear brake
: 11 N
⋅m (1.1 kgf-m, 8.0 lb-ft)
Brake Control System and Diagnosis: 4A-3
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.
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