Downloaded from www.Manualslib.com manuals search engine 4A-4 Brake Control System and Diagnosis:
Rear Brake Hose / Pipe ConstructionS7RS0B4101003
Diagnostic Information and Procedures
Brakes Diagnosis NoteS7RS0B4104001
Road Testing Brakes
Brakes should be tested on dry, clean, smooth and
reasonably level roadway which is not crowned. Road
test brakes by making brake applications with both light
and heavy pedal forces at vari ous speeds to determine if
the vehicle stops evenly and effectively. Also drive
vehicle to see if it leads to one side or the other without
brake application. If it does, check the tire pressure, front
wheel alignment and front suspension attachments for
looseness. See diagnosis table for other causes. Brake Fluid Leaks
Check the master cylinder fl
uid levels. While a slight
drop in reservoir level does result from normal lining
wear, an abnormally low leve l indicates a leak in the
system. In such a case, chec k the entire brake system
for leakage. If even a slight ev idence of leakage is noted,
the cause should be corrected or defective parts should
be replaced.
Substandard or Contaminated Brake Fluid
Improper brake fluid, mineral oil or water in the fluid may
cause the brake fluid to boil or the rubber components in
the hydraulic system to deteriorate.
[A]: ABS model 6. Master cylinder13. ESP® hydraulic unit
[B]: ESP ® model 7. From hydraulic unit to 4-way joint right : 11 N⋅m (11.0 kgf-m, 8.0 lb-ft)
1. From master cylinder primary to hydraulic unit 8. From hydraulic unit to 4-way joint left: 15 N⋅m (1.5 kgf-m, 11.0 lb-ft)
2. From master cylinder secondary to hydraulic unit 9. 4-way joint: 16 N⋅m (1.6 kgf-m, 11.5 lb-ft)
3. From hydraulic unit to right front brake 10.4-way joint to left rear brake hose : 19 N⋅m (1.9 kgf-m, 14.0 lb-ft)
4. From hydraulic unit to left front brake 11. 4-way joint to right rear brake hose
5. ABS hydraulic unit 12. Master cylinder fixing nut
I6RS0C410003-01
A: View A4. Right rear brake hose8. Flexible hose joint bolt
1. To left rear brake hose 5. Left rear brake hose to left brake9. Caliper
2. To right rear brake hose 6. Right rear brake hose to right brake: 16 N⋅m (1.6 kgf-m, 12.0 lb-ft)
3. Left rear brake hose 7. Brake flexible hose: 23 N⋅m (2.3 kgf-m, 17.0 lb-ft)
Downloaded from www.Manualslib.com manuals search engine Brake Control System and Diagnosis: 4A-5
If deterioration of rubber is evident, disassemble all
hydraulic parts and wash with alcohol. Dry these parts
with compressed air before assembly to keep alcohol out
of the system. Replace all rubber parts in the system,
including hoses. Also, when working on the brake
mechanisms, check for fluid on the linings.
If excessive fluid is found, replace the pads. If master cylinder piston seals
are satisfactory, check for
leakage or excessive heat co nditions. If leakage is not
found, drain fluid, flush with brake fluid, refill and bleed
system.
The system must be flushed if there is any doubt as to
the grade of fluid in the system or if fluid has been used
which contained parts that have been subjected to
contaminated fluid.
Brakes Symptom DiagnosisS7RS0B4104002
Condition Possible cause Correction / Reference Item
Not enough braking force Brake oil leakage from brake lines Locate leaking point and repair.
Brake disc or brake pad stained with oil Clean or replace.
Overheated brakes Determine cause and repair.
Badly worn brake pad Replace.
Malfunctioning caliper assembly Repair or replace.
Malfunctioning brake booster Check system and replace assembly.
Malfunctioning brake master cylinder Check system and replace as necessary.
Air in system Bleed system.
Malfunctioning ABS (ESP ®). Check system and replace as necessary.
Brake pull (Brakes not
working in unison) Brake pad and disc are wet with water or
stained with oil in some brakes Clean or replace.
Disc is out of round in some brakes Replace.
Tires are inflated unequally Inflate equally.
Disturbed front wheel 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 double-
walled steel brake tubing.
Malfunctioning caliper assembly Caliper should slide.
Check for stuck or sluggish pistons and proper
lubrication of caliper slide pin.
Loose suspension parts Check all suspension mountings.
Loose calipers Check and torque bolts to specifications.
Noise (High pitched
squeak without brake
applied) Contact wear indicator to brake disc
Replace brake pads.
Worn brake pad Replace brake pads.
Excessive pedal travel
(Pedal stroke too large) Partial brake system failure
Check brake systems and repair as necessary.
Brake fluid leaking Repair the leaking point and bleed air.
Air in system (soft / spongy pedal) Bleed system.
Brake locked Malfunctioning ABS (ESP®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
Dragging brakes (A very
light drag is present in all
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 hoses and/or new brake
piping.
Incorrect parking brake adjustment on
rear brakes Check and adjust to correct specifications.
Weakened or broken return springs in
rear brakes. Replace.
Sluggish parking brake cables or linkage Repair or replace.
Brake caliper piston sticking Repair as necessary.
Badly worn piston seal in caliper Replace piston seal.
Improper brake pedal free height Check brake pedal free height.
Downloaded from www.Manualslib.com manuals search engine 4A-6 Brake Control System and Diagnosis:
Pedal pulsation (Pedal
pulsates when depressed
for braking)Damaged or loose wheel bearings
Replace wheel bearings.
Distorted steering knuckle or rear wheel
spindle Replace knuckle or rear wheel spindle.
Excessive disc lateral runout Check per instructions. If not within
specifications, replace or machine disc.
Parallelism between brake pad and disc
not within specifications Check per instructions. If not within
specifications, replace or machine disc.
Brake caliper piston sticking Repair as necessary.
Braking noise Worn or distorted brake pad Replace pads.
Loose front wheel bearings Replace wheel bearings.
Distorted backing plates or loose
mounting bolts Replace or retighten securing bolts.
Contact wear indicator to brake disc Replace brake pad.
Brake warning light lights
after engine start Parking brake applied
Release parking brake and check that brake
warning light turns off.
Insufficient amount of brake fluid Investigate leaky point, correct it and add
brake fluid.
Brake fluid leaking Investigate leaky point, correct it and add
brake fluid.
Brake warning light circuit faulty Repair circuit.
Malfunctioning EBD system Check system referring to “EBD Warning Light
(Brake Warning Light) Comes ON Steady in
Section 4E”.
Brake warning light turns
on when brake is applied Brake fluid leaking
Investigate leaky point, correct it and add
brake fluid.
Insufficient amount of brake fluid Investigate leaky point, correct it and add
brake fluid.
Brake warning light fails
to turn on even when
parking brake is applied Brake warning light circuit faulty
Replace bulb or repair circuit.
ABS warning light or
ESP
® warning light turns
on after engine start Malfunctioning ABS (ESP
®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light or
ESP
® warning light turns
on when brake is applied Malfunctioning ABS (ESP
®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light or
ESP
® warning light does
not turn on for 2 sec. after
ignition switch has turned
ON Bulb burnt out
Replace bulb.
Malfunctioning ABS (ESP ®) Check system referri ng to “ABS Check in
Section 4E” or “Electronic Stability Program
System Check in Section 4F”.
ABS warning light flashes New ABS hydraulic unit / control module
assembly installed. Perform “ABS Hydraulic
Unit Operation Check
in Section 4E”.
Condition Possible cause Correction / Reference Item
Downloaded from www.Manualslib.com manuals search engine Brake Control System and Diagnosis: 4A-9
Air Bleeding of Brake SystemS7RS0B4106006
CAUTION!
Brake fluid is extremely damaging to paint. If
fluid should accidentally touch painted
surface, immediately wipe fluid from paint
and clean painted surface.
Bleeding operation is necessary to remove air whenever
it entered hydraulic brake system.
Hydraulic lines of brake system are based on the
diagonal split system. When a brake pipe or hose was
disconnected at the wheel, bleeding operation must be
performed at both ends of the line of the removed pipe or
hose. When any joint part of the master cylinder of other
joint part between the master cylinder and each brake
(wheel) was removed, the hydraulic brake system must
be bled at all 4 wheel brakes.
NOTE
Perform bleeding operation starting with rear
brake caliper farthest from master cylinder
and then at front caliper of the same brake
line. Do the same on the other brake line.
1) Fill master cylinder rese rvoir with brake fluid and
keep at least one-half full of fluid during bleeding
operation.
Brake fluid
: Refer to reservoir cap (1) 2) Remove bleeder plug cap. Attach a vinyl tube (1) to
bleeder plug, and insert the other end into container
(2).
3) Depress brake pedal several times, and then while holding it depressed, loosen bleeder plug about one-
third to one-half turn.
4) When fluid pressure in cy linder is almost depleted,
retighten bleeder plug.
5) Repeat this operation until there are no more air bubbles in hydraulic line.
6) When bubbles stop, depress and hold brake pedal and tighten bleeder plug referring to “Front Disc
Brake Components in Section 4B” and “Rear Disc
Brake Components in Section 4C”.
1. Right front brake caliper 3. Right rear brake caliper
2. Left front brake caliper 4. Left rear brake caliper
I6RS0C410007-01
1
I6RS0C410009-01
I2RH01410015-01
I2RH01410016-01
I2RH01410017-01
Downloaded from www.Manualslib.com manuals search engine Rear Brakes: 4C-1
Brakes
Rear Brakes
Repair Instructions
Rear Disc Brake ComponentsS7RS0B4306001
(d)
(c)
(a)
(a)
(a)16171413
2
1
15 2 19
12
117
7
3
7
4
20 20
5
10
9
8
(b)
18
6
24
23
22
21
I7RS0B430001-01
1. Caliper
11. Brake caliper carrier21. Shaft cover
: Apply rubber grease.
2. Caliper pin bolt 12. Caliper carrier bolt22. Lever
3. Boot 13. Rear caliper bleeder plug23. Washer
4. No.1 slide pin : Apply rubber grease. 14. Bleeder plug cap
24. Parking nut
5. Brake pad 15. Brake flexible hose: 23 N⋅m (2.3 kgf-m, 17.0 lb-ft)
6. Return spring 16. Flexible hose joint bolt: 27 N⋅m (2.7 kgf-m, 19.5 lb-ft)
7. Pad spring 17. Hose washer: 60 N⋅m (6.0 kgf-m, 43.5 lb-ft)
8. Disk brake piston : Apply brake fluid to contact surface of cylinder. 18. Brake disc
: 9 N⋅m (0.9 kgf-m, 6.5 lb-ft)
9. Piston seal : Apply small amount of brake fluid to all around part of piston seal. 19. No.2 slide pin
: Apply rubber grease. : Do not reuse.
10. Cylinder boot : Apply small amount of brake fluid. 20. Pad shim
Downloaded from www.Manualslib.com manuals search engine 4C-2 Rear Brakes:
Rear Disc Brake Pad Removal and InstallationS7RS0B4306002
NOTE
When replacing brake pad, replace it on the
right and left.
Removal1) Hoist vehicle and remove wheel.
2) Release parking brake lever.
3) Remove caliper pin bolts (1).
4) Remove caliper (2) from caliper carrier.
NOTE
Hang removed caliper (2) with a wire hook or
the like so as to prevent brake hose from
bending and twisting excessively or being
pulled.
Don’t operate brake pedal with brake pads
removed.
5) Remove brake pads (1) and pad springs. Installation
1) Turn brake caliper piston clockwise to obtain clearance between brake disc and pads.
Special tool
(A): 09945–16060
2) Clean (and degrease) pad spring installation face (3) of caliper carrier (1).
3) Attach pad springs (2) to caliper carrier (1).
4) Before installing brake p ad shims (1), apply small
amount of grease (included in spare parts) to mating
surfaces of brake pad and pad shim.
5) Set pad shims (1) to brake pads (2).
1 2
I6RS0C430002-01
1
I6RS0C430003-01
(A)
I6RS0B431004-01
113
2
I6RS0B431005-03
2
1
1 2
I6RS0C430004-01
Downloaded from www.Manualslib.com manuals search engine Rear Brakes: 4C-3
6) With lug (1) of brake pad matched with dent (2) of brake piston, install caliper (3) to caliper carrier.
7) Tighten caliper pin bolts (4) to specified torque.
Tightening torque
Caliper pin bolt (a): 23 N·m (2.3 kgf-m, 17 lb-ft)
8) Tighten wheel bolts temporarily and lower lift.
9) Tighten wheel nuts to specified torque. Tightening torque
Wheel bolt: 85 N·m (8.5 kgf-m, 61.5 lb-ft)
10) After completion of installation, check for brake effectiveness.Rear Disc Brake Caliper Removal and
Installation
S7RS0B4306003
CAUTION!
Do not allow brake fluid to get on painted
surfaces. Painted surfaces will be damaged
by brake fluid, flush it with water immediately
if any fluid is spilled.
Removal
1) Hoist vehicle and remove rear wheel.
2) Release parking brake lever.
3) Remove clip (1).
4) Disconnect flexible hose (1) from caliper.
4, (a) 21
3
I6RS0C430005-01
1
I6RS0C430006-01
1
I6RS0C430007-01
Downloaded from www.Manualslib.com manuals search engine 4C-4 Rear Brakes:
5) Remove caliper pin bolts (1).
6) Remove caliper (2) from brake caliper carrier (3).
7) Disconnect parking brake cable (1) from lever (2) while rotating lever in direction of arrow.
8) Remove brake pads, slide pins and slide pin boots from brake caliper carrier.
9) Remove brake caliper carrier (1) from spindle (2). Installation
1) Install brake caliper ca rrier (1) to spindle (2).
Tightening torque
Brake caliper carrier bolt (a): 60 N·m (6.0 kgf-m,
43.5 lb-ft)
2) Install new slide pin boots (1) to brake caliper carrier.
3) Apply rubber grease to slide pins, then install slide pin to front side and slide pin to rear side of brake
caliper carrier.
NOTE
Be sure not to install wrongly because the
shape of slide pins are different as below.
1 3
2
I6RS0C430008-01
1
2
I6RS0B431011-01
1 2
I6RS0B431012-01
F: Vehicle front
1
2
(a)
I6RS0B431023-01
I6RS0C430009-02