2003 HONDA CIVIC o2 sensor

17. Remove the bodv stiffener (A).
Remove lhe steering stiffener A from the left side
of the steering gearbox.
18.
19. Remove the steering stiffener B from the right side
of the steering gearbox.
i t1-:: .,
20. Lower the steering gearbox, and rotate it so the
pinion shaft points upward.
21. Remove the pinion shaft grommet (A) from the top
of the torque sensor.
(cont'd)
17-53

8. Remove the flange bolt {A) andwheel sensor(B)
from the knuckle. Do not disconnect the wheel
sensor conneclor.
Remove the flange nut (A) while holding the joint
pin (B) with a hex wrench (C), and disconnect the
stabilizer link {D) from the lower arm (E).
A5x1.0mm9.8 N.m(1.0 kgl.m,7.2 tbt.ftl
9.
10 x 1.25 mm39 N.m (,1.0 kgf.m,29lbf.ft)
10. Remove the lock pin (A)from the lower arm ball
joint, and remove the castle nut (B).
NOTE: During installation, insert the lock pin into
the balljoint pin from the lnside to the outside of
the vehicle. The closed end of the lock Din must be
in the range shown.
07 MAC-SL00200
€--....-"12 x 1.25 mm59 69N m
'R.
11.
12.
(6.0 7.0 kgl m,43 -51 lbf tt)
Disconnect the lower arm from the knuckle using
the special tool (see page l8-10).
Loosen the damper pinch bolts (A) while holding
the nuts (B), and remove the bolts and nuts.
'13. Remove the driveshaft outboard joint {C) fromthe
knuckle (D) by tapping the driveshaft end (E) with a
plastic hammer while drawing the knuckle outward,
then remove the knuckle.
NOTE: Do not Dull the driveshaft end outward. The
driveshaft joint may come off.
(cont'd)
18-13

Special Tools Required
Ball joint remover,28 mm 07MAC-S100200
Removal
1. Raise the front of the vehicle, and support it with
safety stands in the proper location (see page 1-8).
Remove the front wheels.
Remove the cotter pin (A) from the tie-rod end ball
ioint, and remove the nut (B).
10 mm HEX NUT
07MAC-S1002000
Disconnectthe tie-rod end from the steering arm
on the damper using the specialtool (see page 18-
10 ).
Remove the bolts, and remove the wheel sensor
harness bracket {A) and brake hose bracket (B)
from the damper. Do not disconnect the wheel
4.
sensor connector.
A6x1.0mm
/.8
x 1.25 nm
q
5. Remove the damper pinch bolts (A)while holding
the nuts (B).
6. Remove the flange nuts (A)from the top ofthe
damper,
A10 x 'l.25 mm
7. Lower the lower arm, and remove the damper
assembly (B).
(cont'd)
18-21

3. Position the damper on the knuckle, and installthe
new damper pinch bolts (A) and nuts (B), and
lightly tighten the nuts.
B16x 1,5 mm157 N.m(16.0 kgt m,116 tbt.ftl
4. Place the floor jack under the lower arm balljoint,
and raise the suspension to load it with the vehicle's
weight.
Do not place the jack against the lower arm
balljoint.
Tighten the flange nuts on the top of the damper to
the specified torque.
Tighten the damper pinch nuts to the specified
torque.
Install the brake hose bracket (A) and the wheel
sensor harness bracket (B) onto the damper, and
tighten the bolt to the specified torque.
5.
1.
9.8 N.m11.0 kgf.m, 7.2lbf.ftl22N|rl.12.2 kgI m,16 rbr,ftl
q
8. Connect the tie-rod end to the steering arm, and
tighten the nut (A) to the specified torque. Install
the cotter pin (B) after tightening, and bend lts end
as shown.
9. Clean the mating surface ofthe brake disc and the
inside of the wheel, then install the front wheels.
10. Check the wheel alignment, and adjustitif
necessary {see page 18-4).
18-25

Rear Suspension
Hub Bearing Unit Replacement
(cont'd)
9. Remove the hub bearing unit (A) from the spindle.
Install the hub bearing unit in the reverse order of
removal, and note these items:
. Tighten all mounting hardware to the specified
torque values,. Before installing the brake disc, clean the mating
surface ot the hub and the inside of the brake
disc.. Use a new spindle nut on reassembly.. After tightening, use a drift to stake the spindle
nut shoulder against the spindle.. Use a new hub cap on reassembly.. Before installing the wheel, clean the mating
surface of the brake disc and the inside of the
wneel.
10.
,=,,,
18-28
Raise the rear of the vehicle, and suppon it with
safety stands in the proper location (see page 1-8).
Remove the rear wheels.
Remove the brake disc and hub bearing unit (see
step 1 on page 18-27).
Remove the flange bolts (A) and splash guard (B)
from the knuckle.
11.0 kgf.m, 7.2 lbf ft)
4. Remove the wheel sensor(A), braKe nose
mounting bracket (B), and parking cable mounting
bracket (C) from the knuckle. Do not disconnect the
wheel sensor connector.
8 x 1.25 mm22 N.m{2.2 kgf m, 16 lbf ftl
Knuckle Replacement
1.
6x1.0mm9.8 N,m{I.0 kgt.m,7.2 lbf ft)
tt

Rear Suspension
Upper Arm Removal/lnstallation
1.Raise the rear of the vehicle, and support lt with
safety stands in the proper location (see page 1-8).
Remove the rear wheels.
Place a floor jack under the trailing arm, and
support the suspensron.
Remove the flange bolt (A) and wheel sensor
harness bracket (B).
8 x 1.25 mm22 N.m (2.2 kgf.m,16 rbf.ft)
Remove the flange bolts (A), and remove the upper
arm {B).
12 x 1.25 mm59 N.m {6.0 kgf.m,ir3 lbf.ft)12 x 1.25 mm59 N.m 16.0 kgf m,43 tbf.ft)
18-32
5. Installthe upper arm in the reverse order of
renloval, and note these items:
. First install allthe suspension components and
lightly tighten the bolts and nuts, then place ajack under the trailing arm, and raise the
suspension to load it with the vehicle's weight
before fully tightening the bolts and nuts to the
specified torque values.. Tighten allthe mounting hardware to the
specified torque values.' Before installing the wheel, clean the mating
surface of the brake disc and the inside of the
wheel.. Check the wheel alignment, and adjust it if
necessary (see page 18-4).

Master Cylinder Replacement
NOTE: Do not spill brake fluid on the vehicle; it may
damage the paint; if brake fluid does contact the paint,
wash it off immediately with water,
1, Remove the air cleaner assembly (A).
2, Disconnect the brake fluid level sensor connector
(A).
15 N.m{1.5 kgt.m, 11 lbt.ft)
3. Remove the clutch reservoir (B) andenginewire
harness clip (C)from the master cylinder mounting
base (D).
4. Remove the reservoir cap and brake fuid from the
reservoir.
5. Remove the reservoir (E) on the master cylinder
mountrng Dase.
6, Disconnect the brake lines (F)from the master
cylinder (G). To prevent spills, cover the hose joints
with rags or shop towels.
7. Remove the master cylinder mounting nuts {H) and
washers.
8. Remove the master cylinder from the brake booster.
Be careful not to bend or damage the brake lines
when removing the master cylinder.
9. Remove the rod seal (l) from the master cylinder.
10. Installthe master cylinder in the reverse order of
removal, and note these items:
. Replace all the rubber parts with new ones
whenever the master cylinder is removed.
. Check the pushrod clearance before installing the
master cylinder. and adjust it if necessary (see
page 19-16).. Use a new rod seal on reassemblY. Coat the inner bore lip and outer circumference
of the new rod seal {A) with the recommended
seal grease in the master cylinder set.
. Installthe rod seal ontothe master cylinder with
its grooved side (B)toward the master cylinder.
. Check the brake pedal height and free play after
installing the master cylinder, and adjust it if
necessary (see page 19-6).
19-15

Brakes
Conventional Brake Components ................ 1 9-1
ABS (Anti-lock Brake System) Components
Comoonent Location lndex .............,........................... 19-30
General Troubleshooting Information ....................... 19-31
DTC Troubleshooting Index .............. 19-34
Symptom Troubleshooting Index ...,........................... 19-35
System Description ................. ........... 19-36
Circuit Diagram ......... 19-42
DTC Troubleshooting ............... .......... 19-45
ABS Indicator CircuitTroubleshooting ...................... 19-52
Brake System Indicator Circuit
Troubleshooting ...................... ....... 19-55
ABS Modulator-Control Unit Removal and
lnstallation ............. 19-57
Wheel Sensor Insoection ................... 19-59
Wheel Sensor Reolacement .............. 19-59