1999 HONDA CIVIC Power

Fans
- AllModels\,1 |
splicedtogetherinstead of inthe junctionconnector onDl6Y5 models
c211PHOTO 11
FANRELAYPrtofo 10
Se€ I'i CCompre€sorCont ols
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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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c7531
BLU/BLK
ALK2
BLK
RADIATORFANMOTORI
BLK
BLK1
ELK
c753
CONDENSERFANMOTOR
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page 14.
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Gro!nd
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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
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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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Seo Pow€rDisaibution,page 10n 1.
UNDER.HOODFUSE/RELAYBOX
HEATERCONTROLPANEL
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A/C ONINOICATOR
See AkDelivery
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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
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OEE I Dbfibution,
I pacp 10.9.
HEATERCONTROLPANEL
vlEw 76
A6
BLK
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::--
{***,Pase*11
ItI
rfa
r,/cswitchinputL-----
HEATERPUSHswtTcHEs
A/CSwlbh
See AirDslivery,n6arWindowDelogoor
S€e AltDeliv€ry,BaarWindowD€loggpr
See GroundDistribution,pag€ 1+5.
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tttlllnr ar-x,ver- | tn*t,".u IItI
orl "tol---riliii"--
inplt (backup)
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Nclsvritcn Swikh ILED LEDcontrol cofrrnon Ground _ _.i
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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
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Lc420
vtEw 53".*:.f
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FUSE '7HEJT'EF AIC RETAY7JA
UNDER-DASHFUSE/RELAYBOXPHOfO 58
r-r---1 UNDER-HOOD
| ( #tt* IFUsE/RELAY
I t sl*t-' '"o'o'
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Ss6 Pows Dist bution,pag€ 10-9.
Sn itchLEDcommon
c420PHOTO 63vtEw 53
HEATERCONTROLPANEL
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lgnition inpd
Swiich SlitohGroulld co{Y}rnon inMLEDgontrol
Rear winoow Idofogger Igl",,ry'_l
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c12
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BLK
r'
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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
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56€ AirDeliv€ryL------- ---J
HEATER PUSH SWITCHESUNDEN.DASHFUSE/RELAYBOXPHO|O 5e
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See GoundDistdbltion,page 14-7.
NEABwlNoolyDEFOGGENF€I.AYPrrolo 59
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S€9 GrolndDistribtdion,pag€ 1+ 10
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PHOIO 57
BEARwtNDowDEFOGGER
64-1

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

Seat Belt and lgnition Key Reminders
UNDEF-HOODFUSE/RELAYBOX
S6s Pow€fDistribrtion,pe961&10.
FUS€ 25UFIEN?,irA
UNDER.DASHFUSE/RELAYBOXPHOfO 58
+Ss€ PowerDistribution,Fag6 1G6.(Termlnals 17-20)
vlEw 56r:f ftir
YEIt
S€€ Pow€tDistibliion,pag€ 10"6.
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73

Low Fuel Indicator Light
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pag6 106.
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So€qauges
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Sae GroundDistribution,pa$ 14-9.
74