2000 HONDA CIVIC Light switch

Ground
G402
Components or Clrcult Grounded
Arr gear position switch, ABS control unit (3 wires), Blower motor high relay ('99-'00
models), Blower motor relay, ELD unit, Heater Jan switch ('96-'98 models), Heater
control panel, Mode control motor ('96.98 models), Power transistor ('99-'00 models),
Service check connector....plus everything grounded through G401
| 14-13 | ABS pump motor
1l-9 i Stereo radio tuner ('96-'98 models), Audio unit ('99-'00 models)
Drivsr's door lock actuator, Driver's door lock switch, Drivefs window motor' Left mirror
defogger, Pow€r window master switch (2 wires), Power door lock control unit (all
except '99-'00 with keyless), Power mirror switch
G55214-9 i Driver's s€at belt switch, Fuel pump, Fuel tank unit, Right mkror defogger
G601
(Hatch-
back)
14-12 iLeft and right back-up lights, Left and right brake lighvtail lights, Lefl and right rear
turn signal lights, Left and right tail lights....plus eveMhing grounded through G761
G601 I 14-10
(All Coupesl
ano
(96198
S6dans)
High mount brake light, Left and right back-up lights, Left and right inner brake lighv
taiilights, Lett and right license plale lights, Lett and right outer brak€ lighvtail lights'
Left and right rear turn signal lights, Rear window deJogger, Trunk latch switch
G601
(99-'oo
Sedans)
G602
('ss-'00
Sedans)
G761
(Hatch-
back)
G771
(Hatch-
back)
14-11
14-12 i
High mount brake light, Left and right back-up lights, Left and right brake lighvouter
taillights, Left and right inner taillight, Left and right rear turn signal light' Rear window
deJogger (GX), Trunk latch switch
Window antenna coil
Hatch latch switch ('98-'00 models), High mount brake light' Left and right license plate
lights, Rear window wiper motor...plus everything grounded through G601
Rear window defogger
14-13 i SRS unit (2 wires)
*1 = All '96-98 models €xcept Dl685, '99100 D16Y5 with M/T*2 = '98 D1685, all '99-'00 models except Dl6Y5 with M/T
e7

Ground Distributiofl (cont'd)
- G201 andG202
NOTE: Wires shown wrthout color codes are black.
RIGHTHEAD.LIGHTPage110-12
tl
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110-9
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LEFT FRONTPARKING/TURNSIGNALLIGHTPages 110-2,1 10-7, and110-9
()
WIND.SHIELDWASHERMOTORPage 91PHOTA 3
ll
tl
REARwtNDowWASHERMOTORPage 92
tl
tt
c205
RIGHT FRONTPARKING/TURNStcNAL RADIATORLIGHT FANPaoes 110-2, MOTOR11d-7, and Page 63
'99-'00
.- Canada -l
i wnsxen i cnurse, FLUID ; CONTROL' LEVEL . ACTUATOR' SWITCH I paoe 34-2; Page 80-3 i eu6ro re'f-1 ' f-1
2Y2
c211
14-4
I'G201'Lv G2o2

Ground Distributioh (conrd)
)
- G401
NOTE:
To G402on page14-5.
WINOSHIELOWIPERMOTORPage 91-1
DAYTIMERUNNINGLIGHTS
99.!rRoL cLUrcHuNr I swtTcH:?99^ Pases 23-5and 34-3vtEw 66 PHA|A 55
I
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INJECTORCONTROLMODULEPage 25-1
I
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3
. Wires shown without color codes are black.
o On Coupe and Sedan models, G401 is represented by ring terminals.
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INTER.LOCK6611p99 PARKUN|T PINpaoe j38 SWITCHor ige_t Page 138PHoro6s of 138-1vtEw 26 PHOfO /7r-1 r-'t
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CLUTCHINTER-LOCKSWITCHPage 21-2
ll
ll
ttl
rll
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Itttl
'Ll;
I
n
t
M/T with 01685Cruise/D16Y5enginewith M/T
BRAKEFLUIDLEVELswtTcHPage 71ot 71-1
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DOOR LOCK .CONTROLSTEERINGLOCKPage /3
tl
tl
UNITPage 130-12 ;
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models
RNte 40
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(
I
I czor
l'i1l?,
'97 mo
HORNPage 4
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NFnl
s 9c.Plv'
BLK/RED
t
IJ;--
',f-l
DATA LINKCONNECTOR(DLC)Pages 23-4,24-4,25 4,44-1, and 47
30
14-6
G401

cRutsECONTROLMAINswrTcHPage 34
tl
ll
1Y
. - -' accessory
: security system :
i secun,rY ;
: SYSTEMi coNNEcroR :' (oPTroN)' Page |33
: '. rg;'3,, :, I vrfl,v 58
ili; . ----+
REARWINDOW DASH LIGHTSDEFOGGER BBIGHTNESSSWITCH CONTROLLER
:93' :gl"' Goug:*:FTi\" f3$??'o"'
llll bi:8d;fttie-i:9-9{EJ
aaal ,"|;fl9,,ff%;"
:f :1'L;,:;;-;__:_:::J
i:ir .:,;,-rr-E:
f
,-T,-"T-'-.
[_j,I=
,
lii
f ::'* ,I., l, I -l*,.Oerminals l '6)
'96-'98 modelspr+wi.ed tor
'99'00 modelspre-wired lor-_----accessory, security system
I srcunrw sEcunrrY :, SYSTEM SYSTEM ;i CONNECTOR CONi{ECTOR '' (oPTroN)
: Page 133-4
PHO|O136'
I- ABS -.
.-- USA: LX. -' .-' vo-Jl --', EX, and ilx mooers
vtEw 56
MOONROOF
!!P:',t MooN.
i*:r?, 33,o+"
'iii?,;) i??3;?'
' STEREO' RADTO TUNER ' ' DASH LIGHTS ,' P.da11o-, ' ' BRIGHTNESS '', ,;;;;- - : : coNTRoLLER '', v,iw;;" i i eage tte.t :, r-1 ,r r-1
: | | ::l I I
: | | ':l I. L-J . L-J
i"'r ii'I i
MOON-ROOFOPENRELAYPage 122ot 122-1
vtEw 15
ll
ll
'+--a ---'-*-'O
c50tPHOIO 60vtEw 55
r-1 r-1
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lttlL-J L-J
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POWENwrNDowNELAYPage 120?HOm 59
ll
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14-7

Gruise Control (cont'd)
- How the Circuit Works
The cruise control system uses mechanical and
electrical devices to maintain the car's sDeed at a
setting selected by the driver.
System Description
The cruise control unit receives command signals
from the crurse control main switch and the cruise
control SeVResume switch. With the ignition switch
in ON (ll) or START (lll), voltage is provided to the
cruise control main switch through fuse 14. When
you push the switch to ON, power is provided to the
cruise control unit and the brake switch.
The cruise control unit receives information about
operating conditions from the brake switch, the
vehicle speed sensor (VSS), and the clutch switch
(manual transmission) or the A,/T gear position
switch (automatic transmission). The cruise control
unit then sends signals to the cruise control actuator
which regulates the throttle position to maintain the
selected speed. The conlrol unit compares the
actual speed of the car to the selected speed. The
control unit then uses the result of that comoarison
to open or close the throttle.
The brake switch releases the system's control of
the throttle at the instant you press on the brake
pedal. The switch sends a signal to the control unit
by removing power from the normally closed brake
input (GRY wire), and providing power at the
normally open brake input (GRN/vVHT wire). The
control unit responds by allowing the throttle to
close. The clutch switch or the A,/T gear position
switch sends a "disengage" signal to the control unit
that also allows the throttle to close.
The cruise control system will set and automatically
maintain any speed above 25 mph (40 km/h). To set
it, make sure the main switch is on and the switch
indicator is on. Then, after reaching the desired
speed, press the SET switch. This sends a "set"
signal to the cruise control unit which, in turn,
controls the cruise control actuator to maintain the
set speed.
When you push the SET switch and the cruise
control system is on, the "cruise control" ON
indicator lights up.
34-4
(
You can cancel the cruise control system by
turning the main switch off . This removes power to
the control unit and erases the set speed from
memory. lf the system is disengaged temporarily
by the brake switch, or clutch switch, and the car's
speed is still above 25 mph, press the resume
switch: the car will automatically return to the
previously set speed.
For gradual acceleration without pressing the
accelerator pedal, push the RESUME switch and
hold it there. This will send an "acceleration" signal
to the control unit. When you release the switch, the
system will be reprogrammed for the new speed. To
slow the car down. oush the SET switch in and hold
it there. This sends a "deceleration" signal to the
control unit, causing the car to coast. When the
desired speed is reached, release the SET switch.
This reprograms the system tor the new speed.
Refer to the Service Manual (Section 23, Electrical)
tor specific tests or troubleshooting procedures.
(
a

- 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

Rear Window Defogger
l
- '96-'98 Models
See Dash andConsole Lights
rf
See Dash andConsole Lights
S€e GroundDistribution,page 14-7.
L--------
c501
vtEw 55
il
l1c
FUSE 16FR DEF R€LAY7_54
I FUSE/RELAY
ff":;;1il, l"'3|""
3"C3jgl-i
REARwtNDowDEFOGGERSWITCH
.I UNDER-DASH
@
r-F----1
i-f:"'*rul
!._L:___J
UNDER-HOODFUSE/RELAYBOX
FEO/BL| vtEw 34
ll-,---:L::
NEAHwtNDowDEFOGGERRELAYP|1oTO 59
UNOER-DASHFUSE/RELAYBOX
co,pe ano seoanu
'1"[ FzT;4-
-------J
Hatchback
See GroundDistribution,page 14-7.
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fl[lfEex,"
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seecrounda rr( Distnbutron,
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IiIDEFoGGER
I"
I*-l
II ^--.
PHOra 1AA: G401
64

Integrated Control Unit
NOTE: Fuse 31 is hot with lgnition Switch in START (lll) and clutch pedal depressed or A,/T Gear Selector in
PARK (P) or NEUTRAL (N), see Starting System, page 21,21-1, ot 21-2.
See BrakeSystemlndicatorli^hl
FUSE 3IstaaTEaSIGI{AT7AAI
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\
\
\
\
\
\
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S€s SiarlingSyslsm, pago 21,21-1. or 21'2.
SEs BrakeSystemlndicetorLight A6
SsaClharSrrESystom
Eog GoundDistlbution,page l,l-7.
L------3c420PHO|O 63vtEw 53
--r-r..r'
FED/BLU
SeeCeilingLightSee Seat Beltand lgnitionKey Remind€rs
t@
i'l-;;,-lH8B'r*| rrmn1gn I FUSEI
i f t*" ig8f"LJr____J PHOTO 7
u'lf tf,%,
S vtEw 3a
wHr/FED
| 3fl3,n'"n
wHr,FED I sYsteh
<--=- !t
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