ABS pump HONDA CIVIC 1997 6.G Owner's Manual

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CONDITION FOR DETECTION
MANAGEI\,4ENT
FEFERTOPAGEDUNINGABS CONTFOLEXCEPTABS CONTAOL
19-60
19-62
The ABS indicator lighl cones on when vehicle is stopp€d and wheel sensor a given vohaqe does nol
19 64
The ABS indicaror comes on under th€lollowing conditions.When morethan one otwheels are a standstiland thelelocirv otthe fastest wheel reaches a
' fohen th. velocity of the faslesl wheel reaches or exceds a given sped, and it there ar€ somewh@lswhose velocity is slowe.lhan a cenain percenlage oi lh€ fast6t wheelsped for 3 given period. when rhere are lemporary open or short ctcuits ol rhe wheel sonsor' chipp€d pulser gear, orsrgnalorslJrbaaLe
19 64
The main relay repeats ON/OFF switching atalltimes.WhenthemainrelayisON,ashortt$tpulseissentloeachvalve lfthere s some dis'repa ncv, lheABS indicalor lightcomes on.. When rhe main relay is OFF, a shonl€sl pulse is s€nlto each valve lfth6 solenoid drive voltage rsout ol a qiven range, the ABS ndicalor lighl comes on19-66
'The pump nolot s activaled orc€ o' Mrce sfier every gn't'on sw'lch ON (ll) operarion whrle lte -^vchicle acLelerales lrenthemolorotivevo'taSersrhecled When lhevolla96 rs abnormar,lre Absindicaror llghl comes on.. Afte. ABS ;onl rol com pletion, the moror isswitched ofi 6nd the main CPU checks the molor dnvevoltase. when rhe vortase is abnormsl, the ABS indicato49!!!99!:l!:_-
19-68
D!rino an active motor lesl or AAS control,lhe main CPU checks ihe supplv voltage to the motor'whe;lhe vohage s abnofmal, the ABS indicator lightcomes on19,68
lirhe moror drvevoltage indicates molot operalion when the main cPU does notswilch the motoroN, rhe ABs indicaro. comes on19-64
. Wh"" " ".1"".1d ""1r. f"llure is detecred, the CPU checksth€ voltage ofthe main rel6v output lllhevohaqe is lowerthan 6 given vohage, theABS indicator light comes on. The ;ain r€lay repeats ON/OFF switching ar a!ltimss when the main rel.v is ofi, a shorl l6st pulse
is sent ro €ach valve. The CPU mon tors the reJer€nce vohage ll the vohage is out ot a g iven range'
the ABS indic.tor lightcomes on
19 71
wt'",, rt'e lgnitlon rottag" is ower or higherthan a given voltage,lhe CPU inhibils ABSlonlrolandswirches oli the ma in relaY, 6nd the ABS indicaror lig ht com€s on When the ig n ilion vohage recove'sto normal f6ng6, ABS inhibition is canceled.19.73
rimln CpU anO suU CeU ch€ck each other undercertain condnions. Whon rhe CPUS dstectthe fol'lowing discrepanaies, rhe ABS indicator light comss on. whe; rh€re is discGpancv n lhacarculated wheelspeed velocirv thar continuosJor more than a given
.i^/hen rhere is discrcoancv in the ehase informalion lhat continuesfor morerhan a given period' When rhere is discrepancY in thecalculared conlfol pa.amerer'. When thewatch dog conrrolp!lsetailslof a given penod. When th6 checkotth€ ROM tai1s.. when there is disrepancy inrhe data roading.nd wriung prcledurc ot RAM
19 7'l
tr
19-59

Troubleshooting
ABS Pump Motor
Diagnostic Trouble Codo {DTC} 51-53r ABS pump Motor Diagnosis
YES NOTE: Short the PMR terminat to body
NOTE: Reinstall ground for a moment, and recheck the fuse.
the fuse if it is OK lf the fuse is blown, check for a short to bodyground in the MCK circuit.
AAS CONTNOL UNIT 22P CONNECTOR
7At0tl
1211192l22
PMR IYEL/RED} I JUMPERI WIRE
Wire side of female terminals
NO
NO
YES
NOTE: Reinstallthe fuse if it is OK.
NOTE: Short the PMF terminal to booyground for a moment, and recheck the fuse.lf the fuse is blown, check for a short to bodyground in the wire between the under-hoodABS luse/relaV box and pumD motor.
- With the ignition switch ON(ll), ABS indicator lighr doosnot go otf.- With tho SCS s€rvico conneetor conn€cted lsee page 19661,OTCa 51-53 aro indicated.
Check the MTR CHECK (7.5 A) fuse.
Repl.ce the fuse .nd recheck.
Replaco tho tuse and rocheck.
Rcphce th€ pump motor rol6y.
Check the pump motor powersource circuit:Turn the ignition switch ON (ll).
Ch€ck for a short to !'ows. in thopumP motor power 3ource ciacrrit:Remove th6 purnp motor relay,
Does the pump motor operate?
Bopair sho.t to powsr in the wir€botwoen the under-hood A8Stuse/.elay box and ABS pumpmotor.
Does the pump motor operate?
Check tor loGe ABS control unitconnoctors. lf nocessary, substi-tute a known-good ABS controlunit and roch€ck,
(To page 19-69)
19-68

tt
(From page 19-68)UNDER.HOOD ABSFUSE/RELAY 8()X
TERMINAL TERMINAL
PUMP MOTOR 2P CONNECTOR
MOTOR +8 lWHTl,$
rv) -
Y
Wire side ot female terminals
\lt
MOTOR +B {RED}MOTOR GND (BLK)
ABS CONTROL UNIT 22P CONNECTOR
(cont'dl
19-69
JUMPER WIRE
Wire side oI female terminals
Check the pump motor circuit:1. Remove the pump motor relay.2. Turn the ignition switch ON (ll).
3. Connect the pump motor relayconnector +8 and MOTOR terminals with a iumper wire tora momenr,
Ch€ck for an open in the pump
moior +B circuit:1. Turn the ignition switch OFF.2. Disconnect the pump motor2P connector,3. Turn the ignition switch ON (ll).
4. Connect the pump motor relayconnector +B and MOTOR ter-minals with a jumper wire.5. Measure the voltage betweenthe pump motor 2P connectorterminal No. l and bodyground.
Does the pump motor operate?
Repaia open in the wire botweentho under-hood ABS fuse/relaybox and pump motor.ls there battery voltage?
Check the pump motor opgra-tion:Connect the battery {+}terminal tothe pump motor 2P connector ter-minal No. 1. and the (-)terminalto
the terminal No. 2 for a moment.
ReDlaco lho modulator unit.(Feulty pump motor)Does the pump motor operate?
Chock for a short to body ground
in the PMR circuit:1. Turn the ignition switch OFF.2. Disconnect the ABS controlunit 22P connector.3. Check for continuity betweenterminal No. 19 and bodygrouno,
Repail opon in ths wirg botwgentho pump motor and bodv ground,
or poor ground (G,!09).
Ropair 3hort to body g?ound intha wire between the under-hood ABS fuse/rclay box andABS cortrol unit.
(To page 19-70)

Troubleshooting
ABS Pump Motor (cont'dl
(From page 19-69)
ABS CONTROL UNIT 22P CONNECTOR
Check tor an opon in the PCOMcircuit:1. Turn the ignition switch OFF.2. Reconnect the ABS controlunit 22P connector.3. Connect the SCS service con-nector,4. Turn the ignition switch ON (ll).
5. Measure the voltage betweenthe pump motor relay connector PCOI,I terminal andbody ground.
Repair opon in tha wiro bEtwoonth. und€r-hood ABS fu3./rclsybox and ABS control unit.ls there approx. 3 V?
Chock for rn op6n in tho PMR cir-cuit:Measure the voltage beNveen theABS control unit 22P connectorterminal No. 19 and body ground.
Ropair opon in tho wira b€twoontho undor-hood ABS fu.e/rel.ybox and ABS control unit.ls there approx. 3 V?
Chock for an opon in ths MCKcircuh:1. Turn the ignition switch OFF.2- Disconnect the SCS serviceconnector.3. Turn the ignition switch ON lll).4. Measure the voltage betweenthe ABS control unit 22P con-nector terminal No. 17 andbody ground while connect-ing the pump motor relayconnector +8 and MOTOR ter'minal with a jumper wire formoment.
Repeir op.n in th. wire batweentho undor-hood ABS fu.o/rol.Vbox rnd ABS control unh.
Ch6ck lor loose ABS contlol unitconnoctors. lf ngc63ary, sub3ti-tute d known-good ABS controlunit and recheck.
n--l
wire side oI temale terminals
19-70

tfMain Relay
Diagnostic Trouble Code {DTC} 54: Msin Relay Diagnosis
YES
NOTE: Reinstallthe fuse if it is OK.
ABS CONTROL UNIT 26P CONNECTOR
Wire side of female terminals
ABS CONTROL UNIT 22P CONNECTOR
B1{WHT/GRNI
\e
PCOMIGRN/WHT}scoM{BLK/WHTI
(cont'd)
19-71
Wire side of female terminals
- With the ignition switch ON
{ll), ABS indic.tor light doesnot go off.- With the SCS 3ervica connoc-
tor connected (s€e pag€ 19-561,
DTC 54 is indicated.
checkthe ABS +B (20 Alfuse.
Replace th6 fuso and rechock.
Ch€ck for an op€n in the 81, 82
circuit:Measure the voltage betweenbody ground and the ABS control
unit 26P connector terminal No. '14
and No. 15 individually.
Repair open in the wire betweonthe ABS control unit and under-hood ABS tuse/relav box.
Check for a short lo body ground
in the PMR circuit:1- Turn the ignition switch OFF.
2. Remove the pump motor relay.
3. Disconnect the ABS controlunit 22P connector.4. Check for continuity betweenterminal No. 19 and bodygrouno.
Repair short to body ground in
the wire between the undor-hood ABS fuse/relay box andABS control unit.
ls there continuity?
Check tor a short to body ground
in the PCOM, SCOM circuit:1. Disconnect the ABS controlunit 26P connector.2. Check for continuity betweenbody ground and the ABS con-trol unit 26P terminals No. 1
and No.2 individually.
. Bepai. short to body ground in
tho PCOM circuit wire betwoenthe ABS control unit and under-hood ABS fu3e/.olay box.. Repair 3hort to body ground inthe PCOM or SCOM circuit wirebetween the ABS control unitand moduletor unit.. Rcplace th6 modulator unit.(Short circuit insido tho unit)
ls there continuity?
{To page 19 72)lr

\il
Modulator Unit
RemovaUlnstallation
CAUTION:
. Do not spill brake tluid on the car; it may damage the paint; it brako lluid does contact the paint, wash it off immedi-
ately with wator.
a Take care not to damage or delorm the brake lin€s during removal and installation.
. To prevent the brake tluid from tlowing, plug and cover the hose €nds and ioints with a shop tow6l or equivalent
mat€rial.
NOTE| Tightentheflare nutsto 15 N.m (1.5 kgnm. l1 lbf.ft).
Removal
'1. Disconnect the modulator unit 10P and Dump motor 2P connectors.
2. Disconnect the brake lines, then remove the modulator unit.
Installaiion
1. Install the modulator unit. then connect the brake lines.
2. Connect the modulator unit 10P and oumD motor 2P connectors.
3. Bleed the brake system.
4. Start the engine, and check that the ABS indicator light goes off.
Fomright-1461
PUMP MOTOR2P CONNECTOR
J
-R
/2e'
t'
TOR UNIT
tt
19-75

9. lf necessary, remove the compressor bracket as fol-
lows.
. Remove the nut and the washer.
NOTE: When tightening the nut of the left front
mount, make sure the washer is set properly on
the left front engine mount as shown.
. Remove the four mounting bolts and the com-
pressor bracket.
12 x 1.25 rrirn59 N.m 16.0 kgt'm,43 tbf.ft)
COMPRESSORBRACKET
WASHER
1.0 x 1.25 mm44 N.m (i1.5 kg{.m, 33 lbl.ft)
LEFT FRONTMOUNT
10. lnstall in the reverse order of removal. Make note of
the following items.
. lf you're installing a new compressor, drain all
the refrigerant oil from the removed compressor,
and measure its volume. Subtract the volume of
drained oil from '130m? 14 1/3 tl'o2,4 6 lmp'oz);
the result is the amount of oil you should drain
from the new compressor (through the suction
fifting).
. Replace the O-rings with new ones at each fit-
ting, and apply a thin coat of refrigerant oil
before installing them
NOTE: Be sure to use the right O-rings for HFC-
134a (R-134a) to avoid leakage
. Use refrigerant oil (SP-10) for R-134a Sanden and
Hadsys spiral type compressors only'
o To avoid contamination, do not return the oil to
the container once dispensed, and never mix it
with other refrigerant oils.
. lmmediatelY after using the oil, replace the cap
on the container, and seal it to avoid moisture
absorption.
. Do not spill the refrigerant oil on the vehicle; it
may damage the painu if the refrigerant oil con-
tacts the paint, wash it off immediately
. Adjust the Ay'C compressor belt (see page 22-43)
and the power steering pump belt (see section 17)'
. Charge the system (see page 22-46), and test its
oerformance (see Page 22-241
22-31

Compressor (DENSOI
Replacement (cont'd)
9. Remove the bolts, the suction service valve and theO-ring from the compressor,
lf necessary, remove the compressor bracket as fol-lows.
. Remove the nut and the washer from the left frontmount. When tightening the nut to the left frontmount, make sure the washer is set p.operly onthe left front mount as shown.
a Remove the mounting bolts and the compressor
bracket.
12 x 1,25 rnm59 N.m 16.0 kgfrm,
10.
LEFT FRONTMOUNT€ rbf.fi)Roplace.
WASHEB
x 1.25 mm
2s.5 N.m {2.6 kgf.m. 18.8 tbtttl
4/r N.m {4.5 kgf.m, 33 lbt ft}
22-3A
1 1. Install in the reverse order of removal, and note thesertems:
lf you're installing a new compressor. drain all therefrigerant oil from the removed compressor. andmeasure its volume. Subtract the volume ofdrained oil from '140 ml (4 28 fl{,z, 4.9 lmpoz); theresult is the amount of oil you should drain fromthe new compressor (through the suction fifting).Replace the O-rings with new ones at each fining,and apply a thin coat of refrigerant oil beforeinstalling them. Be sure to use the right O,ringsfor HFC-134a (R-134a) to avoid leakage.
Use refrigerant oil {DENSO, ND-OtL8) for HFC-134aDENSO piston type compressors only.To avoid contamination, do not return the oil tothe container once dispensed, and never mix itwith other refrigerant oils.
lmmediately after using the oil, replace the capon the container, and seal it to avoid moisture
absorption.
Do not spill the refrigerant oil on the vehicle; itmay damage the paint; if the refrigerant oil con-tacts the paint, wash it off immediatelv.
Adjust the ly'C compressor belt (see page 22-43)and the power steering pump belt (see section 17).Charge the system (see page 22-46), and test itsperformance (see page 22-24!..

Connector ldentification and Wire Harness Routing
Connector or
Terminal
Number of
CavitiesLocalionConnec{s toNotes
T,I
r2
Right side of engine compartment
Right side of engine compartment
Under-hood fuse/relay box
Starter motor
BatteryBattery positive terminal
Starter Cables
A/C Wire Harness
Battery Ground Cable
Connector or
Terminal
Number of
CavitiesLocationConn€cts toNotos
Right front shock towerBody ground, via battery ground
caDte
oBafteryBattery negative terminal
Engine Ground Cable A
Conn€qtor or
Terminal
Number ot
CavitiosLocationConnects toNoles
T3Left side of enginePower steering pump bracket
G2Left side of engine compartmentBody ground, via engine ground
cable A
Engine Ground Cable B
Connector or
Terminal
Number of
CavitiesLocationConnecls toNoles
T4Right side of engine compartmentTransmission
Right side of front frameBody ground, via engine ground
cable B
Under-hood ABS Fusa/Relay Box Wire Harness
Connector or
Tgrminal
Number oI
CavitiesLocationConneqts toNotes
T5Right side of engine compartmentUnder-hood fuse/relay box
@BaneryBattery positive terminal
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c753
c754
1
2
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Engine compartment wire harness(c209)
Compressor clutch
Condenser fan motor
A,/C pressure switch
Left side of engine compartmentBody ground, via A,/C wire harness
23-14

Connector ldentification and Wire Harness Routing
Main Wire Harness lLeft side ot engine compartment branchl
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c301
c302
c303
c304
c305
c305
c306
c307
c308
c309
c309
c310
5
2
10
3
14
8
1
I
10
2
2
Left side of engine compartment
Left side of engine compartment
Left side of engine companment
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Left side ot engine companment
Left side of engine companment
Left side of engine compartment
Left side of engine companment
Left side of engine companment
Left side of engine companment
Windsh ield wiper motor
Test tachometer connector
Engine wire harness (C101)
Daytime running lights resistor
Engine wire harness (C136)
Engine wire harness (C136)
Brake fluid level switch (+)
Brake fluid level switch (-)
Engine compartment wire harness (C201)
Engine companment wire harness (C202)
Engine compartment wire harness (C202)
Left front ABS wheel sensor
Canada
;|.'
ABS*lr D'16Y5 engine *5:'96 9g models*2: D16Y8 engine*3: With cruise control*4r Without cruise control
*1: '99 - 00 models
Main Wire Harness (Right side of engine compartment branch)
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c353
c354
c355
c356
c357
c359
c360
11
3
I
3
2
2'10
2
2
Right side of engine compartment
Right side of engine companment
Right side of engine companment
Right side of engine compartment
Right side of engine compartment
Right side of engine companment
Right side of engine compartment
Right side of engine compartmentRight side of engine compartment
Right side of engine compartment
Right side of engine compartment
Under-hood fuse/relay box (CgoB)
Under-hood fuse/relay box (C906)
Underhood fuse/retay box (C905)
Under-hood tuse/relay box (C907)
Engine companment wire harness {C214)Under-hood ABS fuse/relay box {C927)Under-hood ABS fuse/retay box (C926)
Right front ABS wheel sensor
ABS solenoid
ABS pump motor
EVAP control canister vent shut valve
USA
ABS
ABS
ABS
ABS
ABS
G403Right side of engine compartmentBody ground, via main wire harness
23-30