1999 HONDA CIVIC Hood

Circuit Diagram
UNDER-HOOD FUSE/RELAY 8OXIGNITIONSWITCH
WHT/8LI( +WHT
Brake systsm light
passenger's airbag
l----ltlI DUMMY II BESISTOR I
tll
tl
la rl
MEMORY ERASESIGNAT IMES)CONNECTOR I2P)
GRY{GRN)
I
BRN BRN
tl.-l- .-r-\./ \./
ECM/PCM SERVICECHECKCONNECTOR
ILT 8LU
I
t'7
DATA LINKCONNECTOR{DLC) {r6P)
GRY GRY(GRN) IGNN)
V:
G801
Teminalside oi thal€ terminals
24-6
4''
SRS UNIT TERMINALSG40tG402
SBS INDICATOR CIRCUIT{ln the gauge assembly)
PGM_FI
DRIVER'SAIRBAGINFLATOR
10 14 r 13 6 7(VAl 3{VBlSRS UNIT16 17 t5 9 18 8

.J
No DTC -'98 - 00 Models
CAUTION: Whenever the ignition switch is ON (ll), or
has been turned OFF for less than three minuies. be
careful not to bump the SRS unil; the airbags could
accidentally deploy and cause damage or iniuries
(A) To page 24'40
Check for short to ground betweon the under-dash fuse/
relav box end the SRS unil
1. TLrrn the ignition switch OFF
2, Disconnect the battery negative cable, then drsconnect
the positive cable, and wait for three minutes'
3. Disconnect the driver's {and front passenger's airbag)
connector{s) {see Page 24_11)
4. Disconnect the SRS main harness 18P connector irom
5. Check resistance between the No 7 terminal of the SRS
main harness 18P connector and ground
There should be 1 M0 or more
(cont'd)
No. 13 {15 A) FUSE
sRs MAIN HARNESS
Check the tuse:Check Ior blown No 13 {15 A) fuse in the under dash fuse/
Beplace the fuse. Turn the ignition switch ON (lll, and check
that lhe tuse doesn't blow
The oroblem has disappeared. Test'drive thc vehicle and
s6e Troubleahoodng lntermittent Failures on pago 2&15
Faufty SRS uniu replace the SRS unii (see page 21-761'
(8)
To page 24 40O1'
24-39

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

- Under-hood ABS Fuse/Relay Box
Fuse
Number
(To underhood ABS fuse/relay box w re harness)
ABS pump motor
| 10-14 I ABS control unit
i ABS control unit
component or circuit ProiectedFuse Name
PUMP MOTOR
I ABS +B
ABS PUMPMOTOR RELAY(To main wire harness)
(To rnain wlre harness)
I!,ITR CHECK
6.3

Fuse/Relay Information lcont'd)
- Under-hood Fuse/Relay Box
Front View
T'102(To engine wire harness)
LO
T1Oo starter cables)
*: Not Used
Rear View
c353To main wire harness
DE
tr
tr
tr
t-l
IJ
n
tJ
t-l51
IJ
n
IJ
n5T
IJ
[[o main wire harness)
6-4
ffo main wire harness)fto main wire harness)

Power Distribution
- From Battery to lgnition Switch, Fuses, and Relays
STARTERPage 21,21-1, ot 21-2
.d1.ro"rr" i
I lsoLENorD I
FUSE 42tG1
BATTERY
To UndeFhood ABSFuse/RelayBox onpage 10-14.
FUSE 47EACK UP
T1
FUSE 41AATTEiY&A
I OETECTOR (ELD) UNIT
tii::.':
UO
PHOfO U
,
I
I
I
t.------J
ELECTRICAL LOAD
i--i rL---- J ELKml
!" Gl
FUSE 4e
0ro{ Urod)FUSE '13Ir|]EAtOAUGHT?.:ta
FUSE 46POWEaWll'IDOW
FUSE /t4
r| E/M1{rA204 (DrGa5)
FUS€ 48TtEADL|a}fT9|'A
FUSE 50NEAAOEFOCGER304
+------, f| ',
I ruse sr I oooa I
J LOC|( uNrr \
il-.4WHT/BLK
Itr '\
\
I
I
I
c352
vlEW 27
c415Se€ Pow€r Distribution,pag6s 10-10 and 10-11.See Power Distribution,page 10-12.
I
\
L------BLK/VI/HT
1
--------Jc415
Vehiclespre-wired foraccessorysecuritysystem
c913PHOTO 6A
FUSE 16AR DEFFEIAY
FUSE 17HEATEA!'/C FEIAY
FUSE 18{RUNNINOL|GHlFET.AY)7.54
FUSE 27CIGAFETTEL|oHTEAACC SOCKET ta
arse ra fBADIO \
?o?"* \15A ('94 raodcr)
ff".acc0)
llL--------J
See Power Distribution,pages 10-8 and 10-9.
STARTERCUT RELAYPage 21-2
P/lolo 135 (99 00)
See PowetDistribution,page 10-7.
Vehicles pre-wired for acces-sory security system
To Fuse 3'|, for delails, see StartrnqSystem, page 21,21-1 , ot 21-2. -
10

I
t
I
UNDER-HOODFUSE/RELAY BOXFUSE 52HO3 ,9IO? LTt3a
FUSE 53SATAAD10A
T102PHOTO 9l--
S€e PowerDistrib$ion,page 10-13.
WHT/REDT101PI1oIO 25
I
IJ
I
I
FUSEofiro{{oa
ALTEBNATORPage 22
nI
I
t
--1 UNDER.
sFUSE 55IIEATER MOTONatla
r^-::r BLowER| t,omacl I MoToR
i lF5:ftL--J or 50-1Ptaofo9
FUSE 55(co{DEtsER fAx}204
FUSE 57cooutag FAr204
r^-::I RADIATOR
l*"*!F*x.L--J paoro p
HOODFUSE/NELAYBOX
UNDER-DASHFUSE/RELAY BOXPHO|O 58
FUSE 19AACK UPLlalni75A
FUS€ 15ALIIFI.IATORsF sErson7.5A
\
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I
If
r--1 coN- r--11'/C COM-lContactt DENSER I Contactl PFESSOR
i i[f*, i iFLug"L--J Page 63 L--J Page 62
To Fus€ l, 2, and 6,see oaos lGl3. STEERINGLOCK
\
l,ut-a--- ---------J
gLXTYEI
FUSE 23(sRs)1(rA
Phofo 10
See PowerDistribdion,pagos 10€and 10-7.
FUSE 3tm w|PEain wAsr{ER}10A
PHOTO 10
See PowerDistribution,page 10-6.
FUSE 24(P,ry AEUn(s/n QELAY)
FUSE 13FU€L PUIIP(sns uRrT)15A
See PowerDisaibution,page 10-3.
FUSE 14{cFrrsE corrtRoL}{rcYLESS)
c913I
I
FUSE9 ,
FUSE 12IURI{UCHTS7,trA
) | , i ]si"ii:-' r|r::::---'--- J/--_-r
i::{;iil i i".ii.l ,#,;:|'-
i-:'ff1tu;.,,, i *=ft;;***
See Powsr Distribution,pages 10-2 and 10-3.
* = '99-'00 models with D16Y7/D16YB
Sea PowerDistribuiion,page 10-4.
:! iii'^': i i lB1%"f;
i L-=r -','lo' i !.---i..-^- ii orsrnrauron i i DtsrRtBUroR :' Page 20 Page 20 or 20'1 '
%[-#
I pHOfO 44 PHO|O 44
1Gl

Power Distribution
- From Fuses to Relays and Components (contd)
FUSE 15AIITIFIIATORsP iE soa754
J-l
c4t912 I C421PHO|O 63virtu is-- : : I lj;:o,19^63
l,lll,nl
tl
i ! [8ig*'"*: : LOAD, I DETECTOR, I GLD} UI{17' | (ELDI u
: i Page 22
I
I
\
VEW 5A
{)
I
L-------J
TRANSMISSIONCONTROLMODULE [rCM]Page 39-4
vtEw 69
815
tl
tl
GAUGEASSEMBLYPage 22-1
, a PHO|O S
, UNDER-HOOD' FUSE/RELAY BOXI PHO|O 7
- '96-'98 CVT
10-4