Power HONDA CIVIC 1999 6.G Workshop Manual

- '99-'00 Models
i-F;;t
L-t'::-i
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UNDER.HOODFUSE/RELAYBOX
UNDER-DASHFUSE/RELAYBOXPHOTO 58
iGi'i'-----'lBEATEA,'/C RE|AY7.5A
".*1.[F*ft"
See PowerDist.ibution,
FUSE 55HEAIERt/toToR
page 10"9.L-*----::--J
BLU
n
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Se€ PowsrDl8tdbution,pago 1O11.
g€e PowsrDlslribution,pag€ lGg,
ALOWEFmoToRREIAYPHOTO Il1
BIUBLIVYEI
813
OFN/WHT
BLK
2BIK
G402G402
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Se€ Ground
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UNDER.HOOOFUSE/RELAYBOX
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1 HEATER I"-'FI POWERt Battory lgnition Blower I CONTROL I | | rAlHStStOni (brckup) input molor i pAHel I I I pHoro 13e
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i motor Power ' 'Jback I wr'vzo
I ;_ |! high relay transislor
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See GroundOistribution,page '14-5.
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60-1

Air Delivery
- '99-'00 Models
a
r--T----.I UNDER-HOOD UNDEB-DASH
| ,ry:i.l? IFUSE/RELAY I t::u:E^tt l:usE/RELAyi
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MODECONTROLMOTOR
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SensorGround grgund
venl
Air mix5Y poientia,reTgrano9 rnrrul
gIouno
RecircSwilcfi switchcommon mput
Recirc S$,itchtED LEDcontrol common
RECIRCULATIONCONTROLMOTORPHOTO 139
CONTROLPANEL
vtEw 76
So€ Roar II Windolv :
a
Htr Ttr =tr ;l *tr :tr *,tr THtr Ttr =tr ;l *tr :tr *tr Ttr
'il
Ti
Battery lgnition Mod€ Mode Mode L4ode Mode l od€(back up) input detrost h€av heat heav vent motorR€circulato Fresh
IJ
Delogger
L------- ---J
HEATERPUSHswtTcHEs
delrost
Air Airmix mixcool hot;;-; J'J - - - J-JL i- 5:- - -
SLK
812
AFN
13
BFN
See GroundDistribution,page 14-5.
c4 t, cl
WHT I ONN
ft++il
c723
F ash/RoclreSwftch
Reclrc.oat LEo
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See RearWindowOetogger
AIR MIXTURECONTROLMOTOR
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61-2

A/C Compressor Controls
- AllModels
cc5)M7
BLU/RED
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&cCOMPRESSORCLUTCHRELAYPHOfO 10
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! ,acc, : POWERTRATN! arn.^-^,o..^, I or ENGINE
! ii i"i-iiii"v i.,ii.r | fi 3$18.
I A/C request ! (pCM or ECM)I (ACSJ a pHOrO a6L------J vtEw 70
REO
BEO
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RED
BLU/FEO
2
BLU/FEO
ct31
:"1'!i'------;
Fi:rz, a ='e6-'s8: A|| moders except D1685vtEw 21 '99100: D16Y5 with l\illT'* = 96-'98: All models
ir'iio ," 99. 00: Dt6y5 wth t\4/t Dl6Bb
atcPRESSUREswtTcH
c752
c1
".,n""t 1(
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v
To facing page ('96''98 models)or page 62'2 ( 99-'00 models).
-Yl
-t---------Jc353
c2'14
vtEW21
c209
A,/CCOMPRESSORCLUTCH
COMPRESSORTHERMALPROTECTOR
UNDER-HOODFUSE/RELAYBOXf-T-*-'.T'---l H53.',EPA?' i-l-------
i iflH* !F,?r",, i f6F"'.i:.",",
| tsBi":J;"#il ! a T| | oaoe 1o-9. ! I I See PowerL_J1_j:_-_j ! H Distriburion.e Y c42o i I
pase 1o-1.
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f ifi"l'
^ see power ! |
62
!(on bracket)

- How the Circuit Works
Battery voltage is supplied through tuse 56 to the
A,/C compressor clutch r€lay contacts at all times.
With the ignition switch in ON (ll), vollage is applied
to the coil of the A,/C compressor clutch relay
through fuse 17. When you push the A,/C switch
ON, and the heater fan switch is in position | , 2, 3,
or 4, a "ground" input is provided to the engine
control module (ECM) or powertrain control module
(PCM) through the l'lC thermostat and the l'lC
pressure switch.
The A,/C compressor clutch relay is grounded by the
engine control module (ECM) or powertrain control
module (PCM). When energized, the A'lC
compressor clutch relay allows battery voltage to
turn on the A,/C comDressor clutch.
The A,/C ON indicator light comes on when the A,/C
system is requested.
A,/C Thermostat
The A'lC thermostat is located on the evaoorator
housing. The A,/C thermostat turns off the A,/C
compressor clutch if the temperature at the
evaporator goes below 3'C (37'F). This prevents
condensation from freezing on the evaporator fins
and blocking the air delivery into the passenger
compartment. The blower motor will keep running
when the sensor turns off the comDressor.
A,/C Pressure Switch
The fuC oressure switch is located in the condenser
outlet line where refrigerant is in a high
temperature/high pressure liquid state. The switch
will sense abnormally high or low pressure, and
open the circuit. This removes ground, and the
compressor will stop running.
Thermal Protectot
The thermal protector, located on the A,/C
compressor, opens and turns the compressor off if it
senses high temperature. Once the compressor
cools, the switch will close and the compressor will
begin running again.
Refer to the Service Manual (Section 22,
Air Conditioning) for specific tests or
troubleshooting procedures.
62-3

Fans
- AllModels\,1 |
splicedtogetherinstead of inthe junctionconnector onDl6Y5 models
c211PHOTO 11
FANRELAYPrtofo 10
Se€ I'i CCompre€sorCont ols
1
ALKAED
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I ; I control | ;
I :L--J :I ' PoWERTRAIN ordu. ' ENGINE CONTROL '' MODULE
: (PCMoTECM) :I PHAfO 86I wEw 7allqA ----.ENGINECOOLANTTEMPERATUREswtrcH BLLPHO|O 33 ?
Ses GrolndDiskibution,oaqe 14.
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1_l
c7531
BLU/BLK
ALK2
BLK
RADIATORFANMOTORI
BLK
BLK1
ELK
c753
CONDENSERFANMOTOR
a
* czsr
page 14.
II
FJ'Glot
c211
Gro!nd
T
Se€ GroundOstribution,Pago 14.4"t1 - '96.f98: All models'99-'00: 016Y5 with M/I 01685"2 = '99-'00: Allmodels exceptD16Y5 with M/T and 01685
cof{oENs€R
* czor33123lCVIl
63

- '96-'98 Models
Fromunder,hood i-T ig;Eili--l UiB!'* il-;;.;l
Fuse/Relay Box onrac,nspaee | 1"1 seepower i$f" I i tS^* !
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From Under-hood ; ( HEATEB
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Seo Pow€rDisaibution,page 10n 1.
UNDER.HOODFUSE/RELAYBOX
HEATERCONTROLPANEL
r------,F-
L ----- -J
--- - -J
,----------J
A/C ONINOICATOR
See AkDelivery
Gatetc
a,icSwltch
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63-1

Fans (cont'd)
- '99-'00 Models
Switch"common
a,/cTHERMOSTATOff below3'C (37" F).
rla
iTm,il-- l5;i;T iln"lgg1
L_t]stE"_i*-o* !-J-___i
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I I .-.. Sse Power II ',-.', Sse Power I S€€ Pow€r
?+ 3s;iT:3:' ?'4 3ff:?f?l:
OEE I Dbfibution,
I pacp 10.9.
HEATERCONTROLPANEL
vlEw 76
A6
BLK
;+
::--
{***,Pase*11
ItI
rfa
r,/cswitchinputL-----
HEATERPUSHswtTcHEs
A/CSwlbh
See AirDslivery,n6arWindowDelogoor
S€e AltDeliv€ry,BaarWindowD€loggpr
See GroundDistribution,pag€ 1+5.
I
J;-a;
I I 'l rHERMrsroR I Ilt | 23 9--------------2, c723q/ f, ,2tr prtoroz!3a
tttlllnr ar-x,ver- | tn*t,".u IItI
orl "tol---riliii"--
inplt (backup)
i
I
Nclsvritcn Swikh ILED LEDcontrol cofrrnon Ground _ _.i
2Yl
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t2oV c723 I
- -_-\Tgr?;u L
---rF------
requ€si
63-2
a/cONlrdlcalqr

- How the Circuit Works
Radiator Fan
Voltage is provided at all times to the radiator fan
relay (contacts) through fuse 57. With the ignition
swilch in ON (ll), voltage is provided to the coil of
the relay through luse 17.
The radiator tan relay can be grounded through
either the engine coolant temperature switch or the
engine control module (ECM) or powertrain control
module (PCM).
The engine coolant temperature switch grounds
the radiator fan relay (coil) when the engine
coolant temperature exceeds 199'F (83'C). The
switch opens when coolanl temperature
decreases 3'- 8'C.
Condenser Fan
Voltage is provided at all times to the condenser fan
relay (contacts) through fuse 56. With the ignition
switch in ON (ll), voltage is provided to the coil of
the relay through fuse 17. When you push the A'lC
switch and put the heater fan switch in 1, 2,3, o( 4
position, the ly'C thermostat comes on, the
condenser fan relay energizes, and the condenser
fan motor runs.
A,/C Thermostat
The A,/C thermostat is located on the evaporator
housing. The A,/C thermostat tums off the A/C
compressor clutch if the temperature at the
evaporator goes below 3'C (37'F). This prevents
condensation from freezing on the evaporator fins
and blocking the air delivery into the passenger
compartment. lf the temperature goes below 3'C
(37"F) tuming off the Ay'C thermostat, ground will be
removed from the condenser fan relay. This will
deenergize the relay and remove voltage from the
condenser fan motor causing the fan to stop running.
Reter to the Service Manual (Section 23, Eleckical)
for specific tests or troubleshooting procedures.
63-3

- '99-'00Models
t@
J
See Power0istribution,pag€ 1&9.
r
I
I
Lc420
vtEw 53".*:.f
!
"T.I
FUSE '7HEJT'EF AIC RETAY7JA
UNDER-DASHFUSE/RELAYBOXPHOfO 58
r-r---1 UNDER-HOOD
| ( #tt* IFUsE/RELAY
I t sl*t-' '"o'o'
L-*----J3 Y C3s1
Ss6 Pows Dist bution,pag€ 10-9.
Sn itchLEDcommon
c420PHOTO 63vtEw 53
HEATERCONTROLPANEL
II
I
lgnition inpd
Swiich SlitohGroulld co{Y}rnon inMLEDgontrol
Rear winoow Idofogger Igl",,ry'_l
A6
ALX
S9a €roundDistr&dbn,P.go 1it-7.
c12
YEL
c9
BLK
r'
c6
PUR
c1
ORN
A7BLU/YEL
21
BLU/YEL
BLU/YEL
4(GX 10)
BLU/YEL
8
- Se€ Air ;D6livory
ONIndlcitor
wlIT/GFI{
c723PHO|O 138
c440PHO|O 81vtEw 45
c411PHOTO 60vtEw 60
c501
vtEwss 5
R€aIWlndowDcroggerSultch
56€ AirDeliv€ryL------- ---J
HEATER PUSH SWITCHESUNDEN.DASHFUSE/RELAYBOXPHO|O 5e
I
I
I
I
See GoundDistdbltion,page 14-7.
NEABwlNoolyDEFOGGENF€I.AYPrrolo 59
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cssl
vtEw 47
Halchback
"*1[ ftTi.:-
wtNDowANTENNAcotL{cx'l) T 9,*%,,
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to!.'IFI REARI J I wrNDow
lll
DEFoGGER
".-i."tr ftTi",,'
t V F,9"oB ",erxialul I
ffiff$Eex,"
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Sre GroundDFtrtbditm,pago 1+7.
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eY
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arr<
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S€9 GrolndDistribtdion,pag€ 1+ 10
*r: G401* csozG601
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PHOIO 57
BEARwtNDowDEFOGGER
64-1

See Wiper,ryVasher
@
FUSE 30l|lslFl,|tEl{luotfT3
UNDER-DASHFUSE/RELAYBOX
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Sea PowerDistfibution,pag€ 10-5. iz
FUSE 15ALTEi}IATORsP 8S$80n?.54
A8
7'5A soe Headtight sss Power- Switch, Distibution,page 100-t. pags 1G7. foINTEGRATEDCONTNOLUNIT
vEw af
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FUSE 26FR \I/IP€gFi WASTIEF204
Ught8.ONnemhderCircrti
lfllsnl|literWip6r RelayCircuit
Combin€dl,Ylper/WarhotCireuit
*I "'r
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II
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See WiperMasher
70-1