wire HONDA CIVIC 1999 6.G Workshop Manual

Gircuit Diagram
MOOULATOR UNIT IOP CONNECTOR
zrJrF!_lll 2 3ll
14TiEltl
c@4
PIMP MOTOR 2P CONNECTOR(Ll number)fFlGTN
UNDER.HOOO A8S FUSE,/FELAY BOX3P CONNECTOR (O number)
| 2 3l
UNDER.HOOD AAS FUSE/RELAY BOX2P CONNECTOR (! number)
| -l
GAUGE ASSEMELY 5P CONNECTOR
---t--t1 t/ 13 )/l5l
Wire side ot temale terminals
- E8l{'Ytr
AA DEF BLY I7.5AI
_@f_u,
n4@f-n,
LEFT.FSONT SOLENOIO
UNDER-OASH FUSSRELAY 8OXZoP CONNECTOR (O numbe,
235678It0tlt3/ i15 /t820
UNDER.OASH FUSE,/RELAY BOX18P CONNECTOR (E numb€r)
23569ll213)t4 /1617
19-50

tABS CONIROL UN]TECM / PCMISCS'
V
,,, +-{l-, ?,,] B6li! [,b.,,,,,-F-
SENSOR
+B
YWHTNED
8U(
J-
G,Ol, Ga02
l
\EWIK
LEFT.
RIGHT,
LEFT
;___.|-1
**1. ,I
coierou
SERVICE CHECKCONNECTOR (2P}
lrl2f
OATA LINKCONNECTOR O 6P)
WHEEL SENSOR2P CONNECTOB
FRONT
/.[Ttl\
REAR
tc-T-lI zlr[B'1213
ABS CONTROL UNIT 26P CONNECTOR1O numb€r)
12346/8Il0./ tt12r3
14 t516 1719 ,/2123
-o&"^1'
cot, croz
Terminalside ofmale terminals
ABS CONTROL UNIT 22P CONNECTOR1! numb€r)
/Wire side of female terminals
19-51

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

tJ
t\
Kickback
1. The motor operates when the ABS is functioning, and the fluid in the reservoir is forced out to the master cylinder
causing kickback at the brake pedal.
2. TheABScontrol unit operates the solenoid valve when the brake pedal is released afterthe initial diagnosis Youmay
hear the faint solenoid valve operation sound at this time. but it is normal.
Pump Motor
1. The pump motor operates when the ABS is functioning
2. The ABS control unit checks the pump motor operation during acceleration. You may hear the faint operation sound
at this time. but it is normal.
Brake Fluid Replacament/Air Blsading
1. Brake fluid replacement and air bleeding procedures are the same as for conventional brakes
Troubleshooting
1. The troubleshooting flowcharts explain the procedures on the assumption that the cause of the problem is still pre-
sent and the ABS indicator light is still on.
Note that troubleshooting following the flowchart when the ABS indicator light does not come on can result in incor-
rect judgment.
2. Ouestion the customer about the conditions when the problem occurred, and try to reproduce the same conditions
for troubleshooting.
self,diagnosis is made at various times such as the initial diagnosis, except ABS control. during ABS control, during
acceleraiion, during the specified vehicle speed, etc. Therefore, the symptom cannot be checked unless the check
conditions match with the problem conditions
3. When the ABS indicator light does not come on during the test drive, but the troubleshooting is performed based on
the DTC, check for the loose connectors. poor contact of the terminals, etc, before troubleshooting.
4. After troubleshooting, erase the DTC and test-drive the car. Be sure that the ABS indicator light does not come on.
5. The connector illustrations show the female connectors with a single outline and the male connectors with a double
ouflrne.
6. The connector terminal cavities containing female terminals are always numbered by looking at the connector from
the wire side. and the cavities containing male terminals are always numbered by looking at the connector from the
terminal side.
r'
19-55

Troubleshooting
ABS Indicator Light Does Not Come On
YES
NOTE:Reinstallthefuse if it is OK.
The A8S indicator light does not come on when ignition switch is turned ON ll.
NOTE: All indicator tights except the charg,ing system light will not come on when theMETER 17.5 A) ft se is btown.
NO
GAUGE ASSEMBI"Y 5P CONNECTOR
Wire side of female terminals
Tho ABS indicator light does notcome on wh€n ignition switch istu.ned ON {lll.
check the METEB (7.5 A) fuse inthe under-dash fuse/relay box.
Beplace the tu3e and recheck.
Check for an open in th6 lcl cir-cuii:1, Disconnect the gauge assembly 5P connector.2. Turn the ignitjon switch ON l).3. Measure the voltage betweenthe gauge assembly 5P con-nector terminal No. 5 andbody ground.
. Ropair opan in tho wirobotwe€n thc METER t7.5 Attuso and gauge .$cmbly.. Roplacc th. und.r-dash tus./r.l.y box. lop.r cirouit in3idothe box.l
ls there baftery voltage?
Check the ABS indicator lightbulb in the gauge assembly.
ls the bulb OK?
Ch€ck tor a short to power in theWALP circuit:Measure the voltage between thegauge assembly 5P connectorterminal No. I and body ground.
Replir short to power in tho wiiGb.tweon the gruge rs3embly.nd ABS control unh.
ls there battery voltage?
lTo page 19-61)
19-60

{From page 19.60)
Check the geuge a$embly:1. Turn the ignition switch OFF.
2. Connect the gauge assembly
5P connector.3. Connect the terminal No. 3 to
body ground with a iumper
4. Turn the ignition switch ON (ll).
Replace th€ ABS indicato. light
drive circuit in the gauge ai3om-
blY.
Does the ABS indicatorlight come on?
.Repair open in the wire
beiween the gauge assemblYand body ground.. Repair poor ground {G401,G402t.
Jt
GAUGE ASSEMBLY 5P CONNECTOR
,c? "l1t/'.lt/t5 |
JUMPER I GND IBLK}wrRE I-L
t
19-61

Troubleshooting
The ABS indicator light does not go off after the engine is started.
- With engine running, ABSindicator light is ON.- With tho SCS sewice connec-to. connected l3oe page 19-561,no DTC is indicated,
Checkthe RR DEF RLY {7.5 A)tusein the under-dash fuse/relay box.
Raphco tha furo and rochack.
Check the ABS +B (20 A) fuse inthe under hood tuse/relay box.
R6pl.ce tho tu3c lnd r.ch.ck.
Chock for an open in the lG2 cir-GUrt:1. Turn the ignition switch ON (lt).2. Measure the voltage betweenthe ABS control unh 26P con-nector terminal No. 3 andbody ground.
Bopair opcn in tha wir. botw.cnth. RR DEF RLY 17.5 Al tus. .ndABS control unit.
Check tor an opon in thG Bl end82 circuit:Measure the voltage betweenbody ground and terminals No. 14and No. 15 individually.
Rrpair opsn in tha wiro t atwa,anthe ABS +B (20 Al fu.r .nd ABScontrol unh.
ls there banery voltage?
1To page 19-63)
ABS Indicator Light Does Not Go Off
YES NOTE: Feinstattthe luse it it is OK.
YES NOTE: Reinsta

the fuse if it is OK.ABS CONTROL UNIT 26P CONNECTOR
IG2IELK/BLUI
Wire side of female terminals
ABS CONTBOL UN]T 26P CONNECTOR
8T IWHT/GRNI
Wire side of temale terminals
19-62

lFrom page 19-621
Ch6ck lor . short to body ground
in ihe WALP Gircuit:1. Turn the ignition switch OFF.
2. Disconnect the ABS control
unit 22P and gauge assembly
5P connectors.3. Check for continuity betweenthe ABS control unit 22P con-nector terminal No. 7 andbody ground.
Ropair short to body g.ound in
tho wire betweon the ABS con_
trol unit and gauge aasembly.
Check the AgS cortrol unit:1. Connect the ABS control unit22P connector.2. Turn lhe ignition switch ON (ll).
3. Measure the voltage between
the ABS control unit 22P con'nector terminal No, 7 and
body ground.Check tor rn open in lho GND2
circuit:1. Connect the ABS control unit26P connector terminal No. 16
to body ground with a iumper
2. Measure the voltage between
the ABS control unit 22P con-
nector terminal No. 7 and
body ground.
ls there baftery voltage?
' Repair op€n in the wit€ betweenthe ABS control unit and bodyground.. Rep.ir poor ground lG40'1,G1(}2t.
ls there battery voltage?
Check tor loo3€ ABS control unitconnector!. lf necesaary, substi_tute a known-qood ABS controlunit and r€check,Check lor an open in the WALP
circuit:Measure the voltage between thegauge assembly 5P connectorterminal No. 1 and body ground.
Ropai. opon in the wiro botweenthe ABS control unit end gauge
assemblv.ls there battery voltage?
Replace the ABS indicrtor lightdriv6 ci.cuit in the gtuge assem-bly.
tv
Wire side ol female terminals
ABS CONTROL UNIT 22P CONNECTOR
ABS CONTROL UNIT 22P CONNECTOR
WALP {BLU/REDI
Wire side ol female terminals
ABS CONTROL UNIT 26P CONNECTOR
rt
GAUGE ASSEMBLY 5P CONNECTOR
.DY
Wire side of female terminals
WALP {BLU/REDI
wire side ol female terminals
J
19-63

Troubleshooting
Wheel Sensor
Diagnostic Trouble Gode {DTC) ll-18: Wheol S€n3ol DiagnosisNoTE: The ABS indicator light comes on when only the drive wheels are turning, signal disturbance is detected, etc. Therefore,test-drive the car at a speed of 12 mph (20 krn/h) or more after turning the ignition:witch from OFF to ON fll), and if the ABSindicator light does not come on, the svstem is OK.
0TcAppropriate Terminal(0)srDE11) SrD€r 1, 12 (Right-front)No.8: FRoNo.21: FRI13, 14 (Left-front)No. 10: FLoNo.23: FL115, 16 {Right-rear)No. {: RRoNo. 17: RRl17, 18 (Left-rear)No.6: RLoNo. 19: RLI
RLl (LT BLU}FRl (GRN/BLKI
Wire side ol female terminals
NO
NOTE:. Normal voltage: Approx.2 V' 0 V: Replace the ABS controt unit.. 4 V or more indicates a short to power.
A8S CONTROL UNIT 26P CONNECTOR
RRO
IBLU/YELI
RR1 IGRN/YELIFL1 IGRN/ORN}
- With the ignition switch ON{ll), ABS indicator tighr doe.noi go off,- Aftsr driving, ABS indicatotlight comes on.- With the SCS so.vice connac-tor conn€c,ted {soe pege 19-561,DTCs 11-18 a.e indicrted.
Chock lhe wheol sensor ci.cuit:1. Disconnect the ABS controlunit 26P connector.2. lleasure the resistancebetween the appropriate wheelsensor (0) and (1) circuit termi,
. Reprir op€n in the l0l or {0 cir-cuit wiro, or shon to thc {01 cir-cuit wi.o in thc {11 circuit wircbctween ths ABS control unitand approprieto wheel a6nsor.. R.pl.ce th€ epp.opri.te wheal3€nloa.
ls the resistance OK?
/Frontr 750 - 1050 o/20"C, 68.F \\Rear: 850- 1150 O/20.C, 68"F /
Check toru short to body groundin the wheel senso. circuit:Check for continuity between theABS control unit 26P connectorappropriate wheel sensor (0) circuit terminali and body ground.
. Rapair short to body ground inth6 (0) or lll cilcuit wi..bctwa.n th6 ABS control unitand appropdaie whoel lonsor.. Rep|'c6 tho appropriatc whcelsanlor.
Chock tor a sho.t to powe. in thowheel3en3or circuit:1. Reconnect the ABS control unit26P connector,2. Start the engine.3. Measure the voltage betweenthe ABS control unit 26P con-nector appropriate wheel sen-sor (0) circuit terminal andbody ground.
Ropair rhon to powo. in the l0lor lll circuit wire batw.en th€ABS cont.ol unit and .pplopriatawhccl !€naoa,
ls there 4 V or more?
fio page 19-65)
19-64