1998 HONDA CIVIC front brake

)
CavityWireTest conditionTest: Desired resultPossible cause if result is not obtained
BRNA/VHTUnder all conditionsCheck for resistance to ground:
There should be 80 - 120 O.
Fau lty actuator solenoid
Poor ground (G202)
An open in the wire
1BRNUnder all conditionsCheck for resistance to ground:
There should be 40 - 60 0.
11BRN/BLKUnder all conditionsCheck for resistance to ground:
There should be 70 - 110 0.
2GRY
lgn jtion switch ON (ll),
main switch ON and
brake pedal pushed,
then released
Check for voltage to ground:
There should be 0 V with the Pedal
pushed and battery voltage with
the pedal released.
'Faulty brake switch
. An open In the wlre
3BLKU nderall conditionsCheck for continuitY to groundl
There should be continuity
' Poor ground (G401, G402)
. An open in the wire
5GRNA,A/HT
Brake pedal pushed,
then released
Check for voltage to groundl
There should be batterY voltage
with the Pedal Pushed. and 0 V
with the pedal released
. Blown No. 52 (15 A) fuse in the
under-hood fuse/relaY box
. Faulty brake switch. An open in the wire
LT GRN/
RED
Set button pushedCheck for voltage to ground:
There should be batterY voltage.
Blown No. 52 (15 A) fuse in the
under-hood fuse/relaY box
Faulty horn relay
Faulty sevresume switch
Faulty cable reel
An open in the wire7LT GRN/
BLK
Resume button Pushed
10RED/BLU
lgnition switch ON (ll)Attach to ground:
Cruise indicator light in the gauge
assembly should come on.
Blown bulb
Blown No. 25 (7.5 A) fuse in the
under dash fuse/relay box
Faulty dimming circuit in the
gauge assemDly
An open in the wire
BLU,A/VHT
lgnition switch ON (ll)
and main swilch ON;
raise the front of the
car, and rotate one
wheel slowly with the
other wheel blocked.
Check for voltage between the
BLUMHT @ and BLK O terminals:
There should be 0- 5 V or more
-0- 5 V or more repeatedlY
. Faulty vehicle speed sensor {VSS)
. An open in the wire
LT GRN
lgnition switch ON (ll)
and main switch ON
Check for voltage to ground:
There should be batterY voltage.
Blown No. 14 (7.5 A)fuse in the
under-dash luse/relaY box
Faulty main switch
An open in the wire
14PNK
A,T: Shift lever in E,
ojorE
M/T: Clutch pedal
released
Check for continuity to ground:
There should be continuity.
NOTE: There should be no conti-
nuity when the clutch Pedal is
depressed or when the shift lever
is in other positions.
Faulty A/f gear position switch
Faulty or misadjusted clutch
switch (M/T)
Poor ground (G401, G402)
An open in the wire
BLU/GRN
Under all conditionsCheck for continuity between No. I
terminal and No. 5 terminal of the
PCM connector A.
There should be continuity
. An open in the wire
*: '99 - 00 models with A,/Tl-,
23-243

Contents
How to Use This Manual ICircuit Schematics (see Circuit Index)Fuse/Relaylnformation 6Ground-to-Componentslndex 6-6ComponentLocationPhotooraohs 201Conriector Views 202
Circuit Index
Accessory power socket 155Air conditionerAir delivery'96198 models 61'99-'00 models 61-2Blower controls'96198 models 60'99100 models 60-1Compressor controls 62Fans 63Anti-lock brake system (ABS) 44A/T gear position indicatorCVT 89All except CVT 89-1Automatic transmission controlsAll '96-'98 models except CVT and GX 39All '99100 models except CVT 39-8All GX models 39-8'96-'98 CVT 39-4'99100 cw 39-12Back-up lightsCoupe and Sedan 110Hatchback l'10-1Brake lightsAll Coupes and'96-'98 Sedans 110-15'99-'00 Sedans 110-16Hatchback 110-17Brake system indicator light'96198 models 7'1'99100 models 71-1Ceiling light 114-3Charging system 22Condenser fan 63Console lights 114Cruise control 34Dash lights 114Daytime running lights 110- 13Engine coolant temperature gauge 81-1Fog lights 110-10Front parking lights 110-2Fuel gauge 81-1Fuse/relay boxUnder-dash 6Under-hood 6-4Underhood ABS 6-3Gauges 81Ground distribution 14Ground-to-Componentslndex 6-6Hazard warning lightsAll except '99100 Sedans 110-6'99100 Sedans 110-8Headlights 110-12Headlight switch 100Heater - See Air ConditionerHorn'96197 models 40'98 model 40-1'99100 models 40-2lgnition key reminder 73lgnition systemAll '96198 models except Dl685 20All '99100 models except D16Y5 with Mn 2O-2All D1685 engines 20-2'99-'00 D 16Y5 with M/T 20
lndicators 80Integrated control unit 70lnterlock systemAll except'96J98 CVT 138'96198CVT 138-1License plate lightsAll Coupes and '96-'98 Sedans I l0-3'99100 Sedans 1 10-4Hatchback 110-5Low fuel indicator light 74Moonrool'96197 models |22'98-'00 models 122-1Odometer 81Oil pressure indicator light 80-3Power distributionBattery to ignition switch, fuses, and relaysFuses to relays and components 10-2Power door locksAll models without keyless entry 130'96-'98 models with keyless entry 130-2'99100 models with keyless entry 130-12Power mirrorsWithout detogger 141With defogger '141-2
Power windows 120Programmed fuel injection system (PGNr-Fl)All '96-98 models except D1685 23All '99-'00 models except D16Y5with M/T and D1685 24All D1685 engines 25'99100 D16Y5 with M/T 23Radiator fan 63Rear window defogger'96-,98 models 64'99100 models 64-1Seat belt reminder 73Security system'96.'98 USA HX, LX, EX 133'96-'98 Canada EX, Si 133'99TOO USA HX, LX, EX, DX.V Si 133-4'99100 Canada EX, Si 133-4All CX and DX models 133-8Speedometer 81Starting systemA./T (All except Dl685) 21A"/r (D16Bs) 21-1Manualtransmission 21-2Slereo sound system 150Supplemental rastraint system (SRS) 47Tachometer 81TailliqhtsAllboupes and'96-'98 Sedans 110-3'99100 Sedans 1 10-4Hatchback 110-5Trunk light 114-3Turn signal lightsAll except'99100 Sedans 110-6'99-'00 Sedans 1 10-8Vehicle speed sensor (VSS) 33Wiper/washerFront 91Rear 92
10

Ground-to-Components I ndex
f.,lONOTE: All ground wires are BLK unless otherwise noted.
GroundPageComponents or Circuit Grounded
Battery (BLKYEL)
Steering pump bracket
t+-rg ITransmission housing
l
G101
(-1)
G101
(-2)
14-2
and
14-3
ano
14-1
Powertrain or engine control module (PG1 and pG2 are BLK: LG1 and LG2 are
BRN/BLK), EGR control solenoid valve (CW, EGR valve and lift sensor (Dt6yS enginewith M,/T), Engine coolant temperature switch, pGM-Fl main relay, power steeringpressure switch (USA), Primary HO2S (D16Y5 engine with l\/,/T), Vehicle speed sensor,VTEC pressure switch (D16Y5/D16Y8 engines), CKF sensor (BRN/BLK), Transmission
control module (CYf) (Pc1 is BLK: LG1 is BRN/BLK)
Shielding betvveen the PCM or ECM and these components (all have BRN/BLK wires):
CKF sensor, TDC/CKP/CYP sensor. Primary and secondary heated oxygen sensors.
Knock sensor (CWDl6YB engine), Mainshaft speed sensor (AiT except CVT),
I Countershaft speed sensor (A/T except CVf)
Shielding between the TCM and these components (CVT) (all have BRN/BLK wires):
Drive pulley speed sensor, Driven pulley speed sensor, Secondary gear shaft
speed sensor
Powertrain or engine control module (PG1 and pG2 are BLK; LG1 and LGz are
BRN/BLK), EGR control solenoid valve (D16Y5 engine), EGR valve (Dt685), Engine
coolant temperature switch, Fuel pressure regulator shut-off solenoid valve (D1685),
PGM-FI main relay, Power steering pressure switch (USA), Vehicle speed sensor, VTECpressure switch (All except D16Y7 engine), CKF sensor (A

except 81642) (BRN/BLK)
Shielding between the PCM or ECM and these components (all have BRN/BLK wires):
CKF sensor, TDC/CKP/CYP sensor, Primary and secondary heated oxygen sensors,
Knock sensor (All except D16Y7 engine), i/ainshaft speed sensor (Arf except CW),
Countershaft speed sensor (A,/T except CVf), Drive pulley speed sensor (CW), Drivenpulley speed sensor (CVT), Secondary gear shaft speed sensor (CVf)
I Badiator fan motor, Right front parking/turn signat tight, Right headtight
G20214-4I Cruise control actuator, Left front parking/turn signal lights, Left headlight, Rear window
I washer motor, Windshield washer motor, Washer fluid level switch (,99-'00 Canada)
G401| +-o
and
14-7
Accessory power socket, Brake fluid level switch, Clutch interlock switch (M/T), Clutchswitch (lillT with cruise/D16Y5 engine with MfD, Combination wiper switch (Z wires),
Cruise control main switch, Cruise control unit, Dash lights brightness controller, Data
link connector, Daytime running lights control unit (Canada), Gauge assembly, Horn('96-'97 models), Integrated control unit, Interlock control unit (ArI), Keyless door lock
control unit ('99-'00 models with keyless), Moonroof close and open relays, Moonroof
switch, Park pin switch (A/r), Power window relay, Rear window defogger relay, Rear
window defogger switch ('96-'98 models), Steering lock, Stereo radio tuner (,96-,98
USA: LX, EX, and HX), Turn signal/hazard relay, Windshield wiper motor.....plus
everything grounded through G402
6-6

100-2
Headlight Switch (cont'd)
-.I UNDER.DASHRom UderdashFur€/Bslay 8ox orprevrous prge.
- - -ri-Y c421 13 Y C5s1'- ll PHoro 63 ll esoro6J
neoialx I u/EW 50 BEDelfi i v'Edu7
'f ---- Hatchback l, Coupe and Sedan
c2o1 : I !'--'l Itlt5i:^- :i"'oYizt i i Iri"Je'tl
i l3pfif.l-"o."-i ".o,".*l =,a,e.Fema,e, ll L--J pe6161ja , ll terminals reversed
: tr_ _ _ _ _ _ _ _ _ _Y::_ _ _ _ _:
c202PNO|O 23ytEw 1
LEFTBRAKELIGHT/TAILLIGHTPage 110-5
9('99100 models 18)
FED/BLK
RIGHTTAILLIGHTPage 110-5
c562 .
vtEw42
c605
wEw a
RIGHTBRAKELIGHT/TAILLIGHTPage 110-5
LEFTLICENSEPLATELIGHTPage ! 10-5
for '99-'00 models
FUSE/RELAYBOX
1(cruise 3)c604 5
FEO/BLK
"ao,"a* |
I
/---lI \---t
LEFTTAILLIGHTPage 110-5
\;,,
LEFT FRONTPARKING/TURNSIGNALLIGHTPage 110-2
RIGHTLICENSEPLATELIGHTPage 110-5
,rUrOO ro.",. ?, I
r-\\_,
".,"-[TI
RIGHT FRONTPARKING/TURN SIGNALLIGHTPage 1l0-2

-50. c421
- Green- On rear of under-dash fuse/relay box- On main wire harness
I
l RED/YEL(Headlight switch)
2 BLIVBLU (ABS)
3 RED/GRN(Headlight switch)
4 GFIN/BLK(Front wiper/washer)
5 FED/BLU(Headlight swrtch)
6 WHT/BLU(Charging systern)
7
9 REDAVHT(Headlight switch)
10 GRN/YEL (Turn signaland hazard lights)
11
12 USA: BLKAVHT(Charging system)
13 BLKryVHT (Fuse 15)
14 GRN/RED (Brake
indicator system light)
16 GRN/RED (Turn signaland hazard lights)
17 BED/BLK(Headlight switch)
18 RED/BLK(Headlight switch)
52. C130
- Brown- Below right side ot dash panel- Engine wire harness junction connector
T---------"1
1 8RN/BLK (G101)
2 BRN/BLK (G101)
3 BRN/BLK (G101)
4 BRN/BLK (G101)
5 BRN/BLK (G101)
6 BRN/BLK (G101)
7 BRN/BLK (G101)
I BRN/BLK (G101)
9 BRN/BLK (G101)
10 BBN/BLK (G101)
L---------J
Terminals grouped together areconnected by the sarre bus bar.
*1= 96- 98 models: All except D16Y5'99-'00 models: D1685*2= 96-98 models: D16Y5/D1685'99- 00r All except D1685
11 BLUMHT (VSS)
12 BLU,ryVHT (VSS)
13 BLU,^/VHT (VSS)L_-_____--Jr---------'1
14 YEL/BLK (PGl\4-Fl)
15 YEL/BLK (PGr\4'Fr)
16 YEUBLK (PGI\4,FI)
17 YEUBLK (PGr\4,Fr)L______---JT----------118 *1: GRN (Fans)*2: YEUBLU (PGM-Fl)
19 *1: GRN (Fans).2: YEUBLU (PGM-Fl)
20 *1: GRN (Fans).2: YEUBLU (PGM-Fl)_______--J
51. SRS Unit
- Yellow- Below center oJ dash- On SRS marn wire harness
1 GFY (1) or GRN(Drivefs nflator)
2
3 GRY (17) or GRN(lgn tion input)
6 GRY (21) or GRN(SRS indicalor control)
7 GRY (18) or GRN(lgnition nput)
8 GBY (14) or GRN (MES)
9 GBY (13) of GRN(Service checkconnector input)
10 GRY (4) or GRN(Frt. pass. inflato4
11
13 GBY (2) or GRN(Drivefs nflator)
14 GBY (5) or GRN(Frt. pass. inflator)
15 GRY (3) or GRN(DLC input/output)
16 GRY (19) or GRN(G801)
17 GRY (20) or GRN(G801)
1B GRY (6) or GRN (MES)
13678
10Il12131415't7't8
53. C420
- Green- On rear of under-dash fuse/relay box- On main wire harness
1 Canadar RED/BLU(Headlights)
2
3 8LK (G401)
5 WHT/GRN(Rear window defogger)
6 WHT/BLU(Power windows)
7
8 YEL/GRN (PGM-FD
I BLK//EL (Fuse 17)
1O BLUAVHT (PGM,FI)
1 1 BLUMHT (PGI,4-FI)
14
16 Canada: BLKAVHT(Headlights)
18 A/Tr WHT/GRN(lnterlock system)
19
20 WHT/RED(Ceiling light)
202-15

Connector ldentification and Wire Harness Routino
Connector
or
Terminal
Number ot
Cavities/
Color
LocationConnects toNotes
Main Wire Harness (Left side of engine compartment branch)
c101
cI36
c136
c150
c201
c202
c202
c301
c302
c304
UOUO
c307
c310
1O.GRY
14-GRY
8.GRY
8.LT GRN
1O-BLU
6.GRY
2-GRY
5.GRY
2.NAT
3-N/A
1.BLK
1-BLK
2.ORN
Left side ot engine compartment
Left side of engine compartment
Letl side of engine compartment
Lett side of engine compaftment
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Engine wire harness
Engine wire hamess
Engine wire hamess
Engine compartment wire harness
Engine compartment wire harness
Engine compartment wire harness
Engine compartment wire harness
Windshield wiper motor
Test tachomeier connector
Daytime running lights resistor
Brake fluid level switch (+)
Brake fluid level switch (-)
Left front ABS wheel sensor
.1
'r.q
r5
.4
Canada
ABS
.1 : '96-98 A/T with D16Y5 enoine'2: '96-98 A,/T with D16Y7/D16Y8 enoines.3: With cruise control*4: Without cruise control.5: GX model
Main Wire Harness (Right side of engine compartment branch)
c214
c351
wacl
UJCJ
c356
c357
c358
UOCY
c360
c361
8-GRY
11.GRY
9.GRY
5-BRN
3-GRY
3-ORN
2.ORN
2-ORN
10-oRN
2.ORN
2-8RN
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Right side of engine comparlment
Right side ot engine compartment
Right side ot engine companment
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Engine compartment wire hamess
Under-hood fuse/relay box
Undef-hood tuse/relay box
Under-hood fuse/relay box
ELD unit
Under-hood ABS fuse/relay box
Underhood ABS fuse/relay box
Right front ABS wheel sensor
ABS modulator unit
ABS pump motor
EVAP control canister vent
shut valve
USA
ABS
ABS
Al'D
AE5
ABS-1
G403Bight side of engine compartmentBody ground, via mainwtre narnessABS
.1: '99-'00 models except GX model
203-18

Connector ldentification and Wire Harness Routing
Connector
or
Terminal
Number ol
Cavities/
Color
LocationConnects toNotes
Main Wire Harness (Left side of dash and floor branch): '96-'97 models
c401
c402
c403
c404
c405
c406
c407
c407
c408
c409
c410
c411
c412
c413
c414
c415
c416
c417
c418
c419
c420
c421
c422
w+4J
c424
c425
c427
c428
c429
c430
c431
c432
c433
c434
lJ+OC
c437
v+.to
c439
14-GRY
4-ORN
4-NAT
14-GRY
4-NAT
8-GRY
2-GRY
2-GRY
1-BRN
1O-WHT
12-GRY
24-BLU
3-YEL
16-GRY
4.BLU
7-BRN
6.NAT
2-N/A
2-YEL
18-GRN
2O.GRN
18-GRN
7-GRN
6-GRN
4-NAT
4-WHT
8.WHT
6-WHT
4-NAT
7-NAT
3-GRY
8-GRY
4.GRY
14-GRY
2-GRY
4-GRY
26-GRY
22-GRY
1-GRN
Behind left kick panel
Behind left kick panel
Under left side ot dash
Under left side of dash
Under left side of dash
Under left side of dash
Under lett side ot dash
Under left side of dash
Under left side of dash
Behind under-dash fuse/relay box
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Under left side of dash
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Front of under-dash iuse/relay box
Front of under-dash fuse/relay box
Under left side of dash
Under left side of dash
Behind steering column cover
Behind steering column cover
Behind steering column cover
Behind steering column cover
Under left side of dash
Under lett side ot dash
Below front console
Below front console
Below front console
Below front console
Behind lett kick panel
Behind left kick panel
Behind under-dash fuse/relay box
Floor wire harness
Floor wire harness
Light flasher relay connector(Security)
Cruise control unit
DRL control unit connector A
DRL control unit connector B
Roof wire harness
Moonroof wire harness
Front fog light connector
Integrated control unit
Dashboard wire harness
Dashboard wire harness
SRS main harness
Data link connector
Starter cut relay
lgnition switch
Security starter cut relay conneclor
Clutch switch
Clutch interlock switch
Under-dash fuse/relay box
Underdash fuse/relay box
Under-dash fuse/relay box
Under-dash fuse/relay box
Underdash fuse/relay box
Horn relay
Brake switch
Combination wiper switch
connector A
Combination wiper switch
connector B
Combination light swilch
connector A
Combination light switch
connector B
Cable reel
lnterlock control unit
Secondary heated oxygen sensor
sub-narness
A,/T gear position switch
Shift lock solenoid
Park pin switch and A,/T gear
position console light
TCM connector A
TCM connector B
Under-dash luse/relay box
ABS
Optional
Canada
Canada-2
'4
Optional
AtT
M/T
Optional'5
M/T
Atl
'6
AN
AN
Atf
CVT
CVT
G401Left kick panelBody ground, via main wire
harness
.2: Without moonroof .5: M/T (with cruise control or for D16Y5 engine)"4: With moonroof .6: With secondary heated oxygen sensor (HO2S)
203-20

Connector ldentification and Wire Harness Routing
Connector
or
Terminal
Number of
Cavities/
Color
LocationConnects toNotess
Main Wire Harness (Left side of dash and tloor branch): '98 model and all GX models
c401
c402
c403
c404
c405
c406
Q407
c407
c407
c408
c409
c410
c411
c412
c413
c414
c415
c416
c417
c418
c419
c420
c421
c422
c423
c424
c425
c426
c427
c428
c429
c430
c431
c432
c433
c434
c435
c437
c438
c439
c447
c448
14-GRY
4.ORN
4-NAT
14-BLU
4-NAT
8.GRY
2.GRY
2-GRY
6.GRY
1-BRN
1O-WHT
12-GRY
24-BLU
3-YEL
16-GRY
5-BLK
7-BRN
6-NAT
2.N/A
2.YEL
18.GRN
2O.GRN
18-GRN
7.GRN
6.GRN
5-BLK
4.WHT
8-WHT
6-WHT
4-NAT
7-NAT
3.GRY
8-GRY
4-GRY
14-GRY
2.GRY
4.GRY
26.GRY
22-GRY
1.GRN
4-N/A
26-GRY
Behind lett kick panel
Behind lett kick panel
Under lett side of dash
Under lett side ol dash
Under lett side of dash
Under left side of dash
Under lett side of dash
Under lett side ot dash
Under left side of dash
Under l€ft side of dash
Behind undsr-dash tuse/rBlay box
Above under-dash tuse/relay box
Above under-dash tuse/relay box
Above under-dash fuse/relay box
Under lett side of dash
Under-dash relay box
Above under-dash tuse/relay box
Under left side of dash
Under lett side of dash
Under left side of dash
Behind under-dash tuse/relay box
Behind under-dash tuse/relay box
Behind under-dash tuse/relay box
Front of under-dash tuse/relay box
Front ol under-dash fuss/relay box
Under-dash relay box
Under lett side ot dash
Behind steering column cover
Behind steering column cover
Behind steering column cover
Behind steering column cover
Und€r left side of dash
Under lett side of dash
Below front console
Below front console
Below front console
Below front console
Behind left kick panel
Behind left kick panel
Behind under-dash fuse/relay box
Under lett side of dash
Behind left kick panel
Floor wire harness
Floor wire harness
Light tlasher relay connector (Security)
Cruise control unit
DRL control unit connector A
DRL control unit connector B
Boot wire harnsss
Moonroof wire harness
Boof wire harness
Front fog light connector
Integrated control unit
Dashboard wire harness
Dashboard wire harness
SRS main harness
Data link connector
Starler cut rslay
lgnition switch
Security strarter cut relay connector
Clutch switch
Clutch interlock switch
Under-dash fuse/relay box
Under-dash fuse/relay box
Under-dash fuso/rolay box
UndeFdash fuse/relay box
Under-dash fuse/relay box
Horn relay
Brake switch
Combination wiper switch connector A
Combinalion wiper srvitch connector B
Combinalion light switch connector A
Combinalion lighi swilch connector B
Cable reel
lnterlock control unil
Secondary heated oxygen sensorsuD-narness
A,/T gear position switch
Shift lock solenoid
Park pin switch and A/T gearposition console light
TCM connector A
TCM connector B
Underdash lus€/relay box
Fuel injector relay
Injector control module
ABS
Optional
Canada
Canada,2
,4
'7
Optional
AIf
Mtf
Oplional'5
M/T
AN'6
An
A,/T
Alf
CW
CVT'7
'7
'7
G401Left kick panelBody ground, via main wire harness
-2: Without moonroof (except GX)-4: With moonroof'5: M/T (with cruise control or for D16Y5 engine)'6: With secondary heated oxygen sensor (H02S)t7: GX model
203-22