2003 HONDA CIVIC Workshop Manual

Conventional Brake Components
Rear Brake Disc Inspection
Runout
1. Raise the rear of the vehicle, and support it with
safety stands in the proper location (see page 1-8).Remove the rear wheels,
2. Remove the brake pads (see page 19-20).
3. Inspect the disc surface for damage and cracks.
Clean the disc thoroughly, and remove all rust,
4. lnstall suita ble f lat washers (A) and wheel nuts, andtighten the nuts to the specified torque to hold thebrake disc securely against the hub.
108 N.m (11.0 kgf.m,80lbf.ft)
Set up the dial gauge against the brake disc as
shown. and measure the runout at 10 mm (0.4 in.)
from the outer edge of the disc.
Brake Disc Runout;
Service Limit: 0.10 mm {0.004 in.)
lf the disc is beyond the service limit, refinish thebrake disc.
Max. Refinish Limit: 9.0 mm (0.35 in.)
NOTE:. lf the brake disc is beyondtheservice limitfor
refinishing, replace it (see page 18-26).. A new disc should be refinished if its runout isgreater than 0.10 mm (0.004 in.).
19-22
Thickness and Parallelism
1. Raise the rear of the vehicle, and support with
safety stands in the proper location (see page l-g).Remove the rear wheels.
2. Remove the brake pads {see page 19 20).
3, Using a micrometer, measure disc thickness ateight points, approximately 45'apart and 10 mm
{0.4 in.) from the outer edge of the disc.
Brake Disc Thickness:
Standard: 9.9-10.1 mm (0.389 0.397 in.l
Max. Retinishing Limit: 9.0 mm (0.35 in.)
Brake Disc Parallelism: 0.016 mm 10.0006 in.)
max.
4.lf the smallest measurement is less than the max.
refinishing limit, replace the brake disc (see page
18-26).
lf the disc is beyond the service limit for parallelism,
refinish the brake disc with an on-car brake lathe.

Rear Brake Caliper Overhaul
Frequent inhalation of brake pad dust, regardless of material composition, could be hazardous to your health.
' Avoid breathing dust particles.
. Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner'
Remove, disassemble, inspect, reassemble, and installthe caliper, and note these items:
. Donotspill brake fluid on the vehicle; it may damage the paint; if brake f luid gets on the paint, wash it off
immediately with water.. To prevent dripping. cover disconnected hose joints with rags or shop towels.
. Cleanall partsinbrakefluidandairdry;blowoutall passageswith compressed air'
. Before reassembling, check that all parts are free of dust and other foreign particles
. Replace pans with new ones as specified in the illustration.. Make sure no dirt or other foreign matter contaminates the brake fluid.
. When reusing pads, always reinstallthem in their original positions to prevent loss of b ra king efficie ncy.
. Do not reuse drained brake fluid.
. Use only clean Honda DOT 3 brake fluid. Non-Honda brake fluid can cause corrosion and shorten the life of the
system.. Do not mix different brands ot brake fluid as they may not be compatible.
. Coatthe piston, piston seal groove, and caliper bore with clean brake fluid.
. Make sure no grease or oil gets on the brake discs or pads.
. Replaceall rubber parts with new ones whenever disassembled.
. After installing the caliper, check the brake hose and line for leaks, interference. and twisting.
oG , nonau."rip6r qreas€ lP/N 08c30-aoa4Ml34 N.m (3.5 kgf m,25lbtft)BOLT
WASHERS
BRAKE HOSE
a
l,i,,'IltE" / !!;,ff
olT-J,.o"c.O.RING CUPBeplace. Beplace.
.ARKING NUr lii.'i rz.r rgr.. Gd ffi27Nm{2.8kgtm,
\-"o, V((rA ",1 ;[.,.JF /;;;;---
t H\a \l / t,i*t'*"
?,,.t/*"^.,,.:,"", /"V4#
ADJUSTING BOLT
,/
27Nm{2.8kgf.m,20 tbf.ftr PAD SPRING
A,n Na 7lfl,lif,loffi ',,0,n, ,,:,o" \
--t)(*ff l^7k ''"'t!1'ry#'
INNEBPA'SHIM
/ .r.:._U i*E'( ":;*" *dF ,.2>a>-
fr.x{_>@ fftt **-->**^'"
,,.-"iV ,/q &'"o.,"."""o"^.,
: 10 MM FLANGE BOLTS.:r=,9!q!q}l 55 N m (5.6 lgf-m, 4r lbt ft)
19-23

Conventional Brake Components
{Brake Hoses and Lines Inspection
1. Inspect the brake hosesfordamage, deterioration, leaks, interference, andtwisting.
2. Check the brake lines for damage, rusting. and leakage. Also check for bent brake lines.
3. Check for leaks at hose and line joints or connections, and retighten if necessary.
4. Check the master cylinder and ABS modulator unit for damage and leakage.
NOTE: Replace the brake hose clip whenever the brake hose is serviced.
15 N.m (1.5 kgf.m, 11 lbf.ftl
ABS MODULATOR UNIT-Io-BRAKE LINE15 N.m {1.5 kgf m.11 lbf.ftl
BRAKE HOSE-to-CALIPERlBANJO BOLTI3il N.m {3.5 kgf.m.25 lbt'ft)BLEEO SCREW9 N.m {0.9 kgf.m,7 lbf.ftl
MASTER CYLINDEB-to-BRAKE LINE15 N m {1.5 kgt.m, ll lbf.ft)
CONTROL VALVE-to-
L
BRAKE HOSE.tO-CALIPER{BANJO BOLTI34 N.m {3.5 kgf.m, 25 lbl.ft)BLEED SCBEW9 N.m10.9 kgf.m, 7 lbf ft)
BRAKE LINE15 N.m 11.5 kgf m, 11 lbf.ft)
BRAKE LINE-Io-BRAKE HOSE15 N.m (1.5 kgf.m,11lbf.ftl
BRAKE LINE-to-BRAKE HOSE
t''/,i'i'
,/ ,l
t t,.. -)
19-24

Brake Hose Replacement
NOTE:. Do not spill brake fluid on the vehicle; it may damage
the paint; if brake fluid gets on the paint, wash it off
immediately with water.. To prevent dripping, cover disconnected line joints
with rags or shop towels.. Before reassembling, check that all parts are free of
dust and other foreign particles.
. Replace parts with new ones whenever specified to
do so.
1 . Replace the brake hose (A) if the hose is twisted,
cracked, or if it leaks.
Disconnect the brake hose from the brake line (B)
using a 10 mm flare nut wrench {C)
Remove the flange bolt (A), and remove the brake
hose brackets from the damper.
Remove and discard the hose clip (B).
Remove the banjo bolt (C), and remove the brake
hose (D) {rom the caliper.
4.
I x 1.25 mm
6. Installthe brake hose bracket (A)on the damper
with the flange bolt (B) first, then connect the brake
hose (C) to the caliper with the banjo bolt {D) and
new sealing washers (E).
7. lnstallthe hose onto the hose bracket on the bodv
with a new hose clip (A).
10 x 1.0 mm15 N.mi (1.5 kgf.m,
! 1t tbt.ftl
Connect the brake line to the brake hose.
After installing the brake hose, bleed the brake
system (see page l9-8).
Do the following checks:
. Check the brake hose and line joint for leaks, and
tighten if necessary.. Check the brake hoses for interference and
twisting.
9.
10.
19-25

Conventional Brake Components
1Parking Brake Cable Replacement
Exploded View
PARKING BRAKEswtTcH
ADJUSTING NUT
L
PARKING BRAKE CABLECheck for stiffness, binding, and damage.
e
8 x 1.2522 N.m12.2kgl
19-26

NOTE:. The parking brake cables must not be bent or
distorted. This will lead to stiff operation and
premature failure.. Refer to the Exploded View as needed during this
proceoure.
1. Release the parking brake lever fully.
2. Remove the rear console (see page 20-57).
Remove the parking brake cable clip (A) from the
brake cable (B).4.
6.
Disconnectthe parking brake cable from the lever
{c).
Remove the parking brake cable mounting
hardware, then remove the cable.
7. lnstallthe new cable in the reverse order of
removal. and note these items:
. Be careful not to bend or distort the cable.. Make sure the parking brake cable clip is fully
seated on the cable housing.. Do the parking brake cable adjuslment (see page
19-7 ).
19-27

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

ABS Gomponents
(Component Location Index
UNDER.HOOD FUSE/RELAY BOX
RIGHT-REAR WHEEL SENSORInspection, page 19-59Replacement, page 19-59UNDER.OASH FUSE/RELAY BOX
\L
LEFT.REARWHEEL SENSORInspection, page 19-59Replacement, page 19-59
DATA LINK CONNECTOR I16PIRIGHT.FRONT WHEEL SENSORInspection, page 19-59Replacement, page 19-59
ABS MODULATOR.CONTROL UNITRemoval and Installation, page 19'57LEFT-FRONT WHEEL SENSORInspection, page 19-59Replacement, page 19 59
19-30