1996 HONDA CIVIC out

10. lnstall the special tool onto the spring cover, and
turn the shaft until the locknut contacts the plate.
Check that the flared end of the spring cover is below
the circlip groove.
Install the circlip into the groove. then remove the
special tool.
NOTE: Check that the circlip is seated in the groove
properly.
11.
12.
CIRCLIP
t.t
SPRING COVER
13. Coat a new piston seal with recommended silicone
grease in the caliper seal set, and install it in the cali-
per.
PISTON BOOTReplace. RUBBER GREASE
Apply recommended rubber grease in the caliper
seal set to the sealing lips and inside of a new pis-
ton boot, and install it in the caliper.
Coat the outside of the piston with brake fluid, and
install it onto the adjusting bolt while rotating it
clockwise with the tool.
CAUTION: Avoid damaging the piston and piston
boot.
PISTON SEALReplace.
-6l
14.
PISTON
(cont'd)
19-33

Rear Brake Caliper
Reassembly (cont'dl
'16. Installthe pad spring onto the caliper.
Apply the recommended pin groase in the caliper
seal set to the sliding surface of the pins and inside
of the new pin boots.
Install the pin boots into the grooves in the caliper
bracket properly.
PIN BOOTSReplsce.
(Bl.ck Colorl
PINRepl6ce.
19. Insert pin A and pin B into the caliper bracket.
20. Install the pin boots into the grooves in thepropefly.
PAD SPRING
11.
PIN GREASE
19-34
pr ns
22.
21. Install the brake pad retainers and brake pads (see
page 19-25).
Align the cutout in the piston with the tab on the
inner pad (see page 19-25).
Install the caliper onto the caliper bracket. and tight-
en the caliper mounting bolts.
CALIPER MOUNTING BOLTS23 N.m {2.3 kg{.m. 17 lbf.ft)
WASHERSReplace.
BANJO BOLT34 N.m13.5 kg{.m.25 rbtft)
24.Connect the brake hose to the caliper with new seal,
ing washers, and tighten the banjo bolt,
Insert ths cable through the arm, and connect the
cabls to the lever with the clevis pin and lock pin.
Install the cable clip securely.
CLEVIS PIN
-t
//t
LOCK PINRoplace.
26. Install the caliDer shield.
27. Fill the brake reservoir, and bleed the brake svstem(see page 19-71.
28. Operate the brake pedal several times, then adjust
the parking brake (see page 19-6).
29. After installation, perform the following checks:. Check for leaks at hose and line joints and con-nections, and retighten if necessary.. Check the parking brake lever for operation, and
adjust it if necessary.
. Check for brake hose for interference or twistinq.

t-
Brake Shoe Disassembly
1. Remove the tension pins by pushing the retainer
springs and turning them.
TENSION PINS
RETAINER SPRINGS
Lower the brake shoe assembly, and remove the
lower return spring.
NOTEi Be careful not to damage the dust cover on
the wheel cylinder.
Remove the brake shoe assembly.
Disconnect the parking brake cable from the parking
brake lever.
Remove the upper return spring, self-adjuster lever,
and self-adjuster spring, and separate the brake
snoe5.
t
3.
4.
ADJUSTEB BOLTCheck ratchet teeth forwear ano oamage.
UPPER RETURN SPRINGCheck for weaknessano oamage.
ll
,'/
N
r
//
t
6. Remove the wave washer, parking brake lever, and
pivot pin from the brake shoe by removing the U-
clrp.
PARKING ERAKEI-EVER
WAVE WASHER
/
@@
I
IU-CLIPReplace.
Brake Shoe Reassembly
1.Apply brake cylinder grease (P/Nr 08733 - B020E) or
equivalent rubber grease to the sliding surface of
the pivot pin, and insert the pin into the brake shoe.
Install the parking brake lever and wave washer on
the pivot pin and secure them with the U-clip,
NOTE: Pinch the U-clip securely to prevent the pivot
pin from coming out of the brake shoe.
,6;::"'
(cont'd)
19-37
LEVER

Anti-lock Brake System (ABSI
Featu res/Construction
When the brake pedal is depressed during driving, the wheels can lock before the vehicle comes to a stop, In such a case,the maneuverability of the vehicle is reduced if the front wheels are locked, and the stability of the vehicle is reduced if therear wheels are locked, creating an extremely unstable condition. The ABS precisely controls the slip rate of the wheels toensure the grip force of the tires. and it thereby ensures the maneuverbility and stability of the vehicle.Judging the vehicle speed. the ABS calculates the slip rate of the wheels based on the vehicle speed and the wheel speed,then it controls the brake fluid pressure to attain the target slip rate.
Grip Force of Tire and Road Surlace
COEFFICIENT OFFRICTION
TARGET SLIP RATE
Slip Rate
BRAKINGSTART POINT
ROTATIONALDIRECTION
RADIALDIRECTIONOF THEROTATIONALOIRECTION
A: Distance without slio8: Slippsd distanceC: Actuel distance
sr-rrmre=f=SLIP RATEVEIIICLE SPEED - WHEEL SPEEOVEHICLE SPEED
19-46

Anti-lock Brake System {ABS)
Operation (cont'dl
ABS Modulator
The ABS modulator consists of the inlet solenoid valve, outlet solenoid valve, reservoir, pump, pump motor and thedamping chamber.
The modulator reduces the caliper fluid pressure directly, and it is also referred to as a circulating type because the brake fluidcirculates through the caliper, reservoir and the master cylinder.The hydraulic control has three modes: pressure reducing, pressure retaining, and pressure intensifying.The hydraulic circuit is the independent four channel type, one channel for each wheel.
RF LR
Pressure intensifying mode: Inlet valve open, outlet valve closed
Pressure retaining mode:
Pressure reducing mode:
Motor operation mode:
rN: INLETVALVE {NORMALtY OpENIOUT: OUTIET VALVE {NORMALIY CTOSED)Master cylinder fluid is pumped out to the caliDer.Inlet valve closed, outlet valve closedCaliper fluid is retained by the inlet valve and outlet valve.Inlet valve closed, outlet valve oDenCaliper fluid flows through the outlet valve to the reservoir.When starting the pressure reducing mode, the pump motor is ON.When stopping ABS operation, the pump motor is OFF.The reservoir fluid is pumped out by the pump, through the damping chamber, to the mastercvlinder.
PUMP MOTOR
19-48

L
Wheel Soeed and Modulator Contlo
t
OUTLETVALVE ON
OFF
INLETVALVE ON
OFF
t\,40ToR
ON
OFF
when the wheel speed drops sharply below the vehicle speed, the inlet valve closes to retain the caliper fluid pressure
When the wheel speed drops further, the outlet valve opens momentarily to reduce the caliper fluid pressure. The pump
motor starts at this time.
As the wheel speed is restored, the inlet valve opens momentarily to increase the caliper fluid pressure.
Wheel SensoJ
The wheel sensors are the magnetic contactless type
As the gear pulser teeth rotate past the wheel sensor's magnetic coil, AC current is generated The AC frequency changes
in accordance with the wheel speed. The ABS control unit detects the wheel sensor signal frequency and thereby detects
the wheel speed.
There are four wheel sensors, one for each wheel
The gear pulser has 50 teeth.
EEL SPEED
at LOW SPEEDgl
=o
GEAR PULSEBWHEEL SENSOBat HIGH SPEED
/
19-49

ABS Control Unit Terminal Arrangement
ABS CONTROL UNIT 26P CONNECTOR
Wire side of temale terminals
Terminalnumo0rWirecolorTerminal signTerminalnamoDgscriptionVoltage
Conditions(lgnition Switch ON flt))Output voltagoteminals
PCOM(Primary
common)
Power source for the solenoidvalve and pump motor.1-GNDON
=ONOV
AC: 3-6 V
BLK/WHTscoM(Secondary
common)
Power source for the solenoid
2.GNDOFF
lConnect the SCS service\
conneclor lApprox. 3 V
ELVBLUtG2(lgnition 2)Detects ignition switch 2
!9nal. (system activate signal)3-GNDBatt€ry voltage
BLU/YELRRO(Rear-right 0)Detects right-rear wheelsensor signal.4-17
When the wheel isturned at 1 turn/second.
53 mV or above ondigitaltester (ACra nge) {Fefera nce)150 mvp-p or aboveon oscilloscope
6GRYRLO(Rear-left 0)Detects left-rear wheel sensorsrgnal.6-19
8GRNFRO(Front-right 0)D€tects right-front wheelsgnsor srgnal,a-21StopsApprox.2.5VSTOP(Stop)hects brake switch signal.(Prevents unnecess€ry ABS operation)9-GNDBrake pedal depressed.Battery voltage
Brake pedal released.OV
10BRN^/vHTFLO(Front-left 0)
Detects left-front wheel sensorsignal.
10-23
When the wheel isturned at 1 turn/secono.
53 mV or above ondigitaltester (ACrange) (Referance)
150 mVFporaboveon oscilloscope
9!opsApprox. 2.5 V
12YELRLOUT(Rearjeft outlet)
Drives left-rear outlet solenoid
12.GNDON-9ONOV
OFFAC: 3^6 V
REDMHTRR]N(Rear-right
inlet)
Drives right-rear inlet solenoidvalve.13-GNDOFF
lconnect the SCS service]i connector IApprox. 3 V
14B1(Battery 1)Power source for the solenoidvatve and pump motor.14.GND
Battery voltage15WHT/G R N82(Baftery 2)Power source for the solenoidvarve ano pump motor.15.GND
r6BLKGND2{Ground 2)Ground for the ABS controlunit.16-GNDBelow 0.3 V
17GRN/'/ELRR1(Rear-right 1)Detects right-rear wheelsensor signal.17-4
When the wheel is turnedat 1 turn/second.
53 mV or aboveon digitaltester(AC range)(Referance) 150mVp-p or aboveon oscilloscope
19LT BLURLl(Rea.-left 1)Detects left-rear wheel sensorsagnal.19-6
GRN/BLKFRl(Front-right 1)Detects right-front wheelsensor signal.21-8
FL1(Front-left 1)Detects left-front wheel sensorsignal.23-10StopsApprox. 2.5 V
REDRL-IN(Rear-lett inletl
Drives left-r€ar inlet solenoid
25.GND
ut
ON
'6
-9ONOV
OFFAC: 3-6 V
OFF
lconnect the SCS service] connector lApprox. 3 V
BLKGND3(Ground 3)Ground for the ABS cgntrolunit.26.GNDBelow 0.3 V
19-52

e\
t
ABS CONTROL UNIT 22P CONNECTOR
Wire side of female terminals
TerminalnumbelWirocororTerminalsignDe3cription
Volt.ge
ConditionE(lgnition Switch ON (ll)lOutput voltagolTqrminal namslterminils
RED/BLUFR-IN{Front-rightinlet)
Drives right-front inletsolenoid valve.
I-GNDriJ
ON-9ONOV
OFFAC: 3-6 V
OFF
/Connect the SCS servicq
connector IApprox. 3 V
BRNscs(Service checksignal)
Detects service check signal
{Diagnostic trouble codeindication)4-GND
SCS service connectorconnected.OV
SCS service connectordisconneded.Appro)(. 5 V
7BLU/RED(Warning
ramp)
Drives ABS indicator light (The
indicator light go€s off when
ABS control unit outputs bat-
tery volta9e),
7-GND
Indicator light ONApprox, 2 V
Indicator light OFFBattery voltage
8BLU/YELNot used.
10YEUBLKFL.OUT{Front-leftoutlet)
Drives left-front outletsolenoid valve.10-GNOON
ONOV
OFFAC:3-6 V
11RED/BLKFLIN{Front-l€ft inlet)
Drives left-front inlet solenoid11-GNDOFF
lconnect the SCS servicq
connector IApprox. 3 V
YEUBLU
FR.OUT(Front-right
outlet)
Drives right-front outlet
solenoid valve.12-GNO
l4LT BLUDLC(Data linkconnector)
Communicates withPGM Tester.Honda14.GNDApprox. 5 V
17BRNA/ELMCK
lMotor check)
Detects pump motor drivesrgnal.17.GNDPumpmotorreray
ONBattery voltage
OFFOV
19YELREDPMR(Pump motorreray,
Drives pump motor relay.
19-GND
ONONOV
OFFAC: 3-6 V
OFFponnect the SCS sewicq
connedor lApprox. 3 V
BLURR-OUT(Rear-right
outletl
Drives right-rear outlel
solenoid valve.
21-GNDuJ
ON
Pumpmotorrelay
ONOV
OFFAC: 3-6 V
OFF
lconnect the SCS servicq
connedor )Approx. 3 V
22BLKGND2(Ground 2)Ground for the ABS controluntt.22-GNDBelow 0.3 v
19-53