1999 HONDA CIVIC pan

* = '96-98 models except D1685,'99100 D16Y5 with lVl/T
UNDER-HOODFUSE/RELAYBOX
'98CW - -.
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: r--J ;, TRANSMISSION ,. CONTROL' MODULE OCM) :' Page 3g-4 ;I PHOIO 121I vlEW 69
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\FUS€ 47aAcx uP
c351
WHT/BLIJ
WHT/BLU
WHT/BLU
18c4'l t
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WHT/ALU
WHT/ALU
11c440
WHT/BLU
10
' WHT/BLU
, 423
c131
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WHT/BITJ
'96-'98
models
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STEREORADIOTUNERPage 150
'99-'m
modelsmodeB
'99-'00
models
c723c723
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wHr/atu
810B21cc10)
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HEATERCONTROLPANELPages 60-1,61-2,62-2,and 63-2
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POWERTRAIN oTENGINE CONTROLMODULE(PCM or ECM)
Page 23, 24, ot 25
AUDIOUNITPage 150
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HEATERCONTROLPANELPages 62-1and 63'1
10-1 1

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MODECONTROLMOTOR
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HEATERCONTROLPANEL
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lleatSwltch
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138
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VenlSwltch
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S9e GroundDistribution,page 14-5.h
-_l
G402
:",;[----
1
61-1

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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I PJ,'.',8.J390 i
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i t i a l'"0 r3l",lli"i:" aL--{..-----J L-J..----5::---:-J
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lr !I See Power I See Power Distnbution.I Distribution, U page 1o-9.
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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
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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
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HEATERPUSHswtTcHEs
delrost
Air Airmix mixcool hot;;-; J'J - - - J-JL i- 5:- - -
SLK
812
AFN
13
BFN
See GroundDistribution,page 14-5.
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WHT I ONN
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F ash/RoclreSwftch
Reclrc.oat LEo
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tt
L__l--tGo3,
See RearWindowOetogger
AIR MIXTURECONTROLMOTOR
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61-2

- How the Circuit Works
'96198 Models
The air delivery system directs the flow of air used
by the heater and air conditioner systems.
Mode Selection
Mode selection is controlled by the mode switches
in the heater control panel and the mode control
motor. When you select a specific mode, voltage is
applied through the dimming circuit to the LED,
which comes on, indicating the mode selected.
Ground is orovided to the mode control motor
though that mode switch. The motor then runs until
the air control door reaches the proper position.
Fresh/Recirculation 56lection
When you press the fresh or recirculation button, a
ground signal is sent from the heater control panel
to the recirculation control motor. The motor then
runs until the recirculation door reaches the proper
position. Battery voltage is also applied through the
dimming circuit to the corresponding LED, and the
LED comes on.
Refer to the Service Manual (Section 21, Heater) for
specitic tests or troubleshooting proc€dures.
'99J00 Models
The heater control panel receives battery voltage at
all times through fuse 47. With the ignition switch in
ON (ll), voltage is supplied to the heater control
panel through fuse 17. The control panel is
grounded at G402.
The heater control panel controls the air delivery
motors, and supplies a 5 VDC reterence voltage to
the air mixture control motor.
The air mixture and mode control motors each
receive inputs trom the heater control panel. The air
mix motor regulates the mixture of cold and hot air
by varying the position of the heater-evaporator doot
The mode control motor controls the direction and
volume of outlet air. The air flow can be directed to
the dashboard vents or the corner vents.
Both the air mixture control molor and mode control
motor are grounded by the h€aler control panel.
The recirculation control motor receives battery
voltage through fuso 17 when the ignition swilch is
in ON (ll). lt regulates the position of the fresh/recirc
door, and is controlled by two position inputs from
the heater control panel ("Recirc" and "Fresh").
Refer to the Service Manual (Section 21, Heater) tor
specific tests or troubleshooting procedures.
61-3

- '96-'98 Models
From C214 onfacing page.
v
"**il'ifr"e;
S€e FwvofDistrih$on,pags 10'11.
UNDER.HOODFUSE/RELAYBOX
HEATERco TROLPANEL----1 Dimmino
I Clrcult -
L------J
See AitDelivery'l ctte
lrcI
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10
HEATERFANswtTcH
INDICATOR
62-1

AiC Compressor Gontrols (cont'd)
- '99-'00 Models
From page 62.
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BLUAVHT
15
6LUAVHT
UNDER.HOODFUSE/RELAYBOX
Seg Pow6rDistrlbutiofl,pag€ 'l Gl1-c353PHO|O 8
l[,,*
';.!, "'""
,c,/cSwitch switchcommon itput
a,/cTHERMOSTATOlt below3"C (37"F).
THERMISTOR
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B11A A8A B'IO |'r--:=---I A/C lgnition B€ttery II request input (backup) :
".j:[ru*,,ry "..;X
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HEATERCONTROLPANEL
l'lCswitch SwitchLgD IEDcodrol cormonGrouod
See AirD€livery,RgarWindowD€foggar
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ORN
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GBN
r,/cOt'llndicatof
HEATERPUSHswrTcHEs
t/cSwltch
S€e AirDelivefy,RearWindowDslogg6f
See GroundDist.ibdion,page 1,1-5.
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.I UNDER.
I HOODi FUSE/I RELAYI Box
IJ
62-2
PHOfO 125

- '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^* !
V L-I----q,ryli"--Jr'i
L8ry-s:d-J
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From Under-hood ; ( HEATEB
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Seo Pow€rDisaibution,page 10n 1.
UNDER.HOODFUSE/RELAYBOX
HEATERCONTROLPANEL
r------,F-
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--- - -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.
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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)
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Nclsvritcn Swikh ILED LEDcontrol cofrrnon Ground _ _.i
2Yl
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t2oV c723 I
- -_-\Tgr?;u L
---rF------
requ€si
63-2
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