2000 HONDA CIVIC Interlock

Ground-to-Components I ndex
f.,lONOTE: All ground wires are BLK unless otherwise noted.
GroundPageComponents or Circuit Grounded
Battery (BLKYEL)
Steering pump bracket
t+-rg ITransmission housing
l
G101
(-1)
G101
(-2)
14-2
and
14-3
ano
14-1
Powertrain or engine control module (PG1 and pG2 are BLK: LG1 and LG2 are
BRN/BLK), EGR control solenoid valve (CW, EGR valve and lift sensor (Dt6yS enginewith M,/T), Engine coolant temperature switch, pGM-Fl main relay, power steeringpressure switch (USA), Primary HO2S (D16Y5 engine with l\/,/T), Vehicle speed sensor,VTEC pressure switch (D16Y5/D16Y8 engines), CKF sensor (BRN/BLK), Transmission
control module (CYf) (Pc1 is BLK: LG1 is BRN/BLK)
Shielding betvveen the PCM or ECM and these components (all have BRN/BLK wires):
CKF sensor, TDC/CKP/CYP sensor. Primary and secondary heated oxygen sensors.
Knock sensor (CWDl6YB engine), Mainshaft speed sensor (AiT except CVT),
I Countershaft speed sensor (A/T except CVf)
Shielding between the TCM and these components (CVT) (all have BRN/BLK wires):
Drive pulley speed sensor, Driven pulley speed sensor, Secondary gear shaft
speed sensor
Powertrain or engine control module (PG1 and pG2 are BLK; LG1 and LGz are
BRN/BLK), EGR control solenoid valve (D16Y5 engine), EGR valve (Dt685), Engine
coolant temperature switch, Fuel pressure regulator shut-off solenoid valve (D1685),
PGM-FI main relay, Power steering pressure switch (USA), Vehicle speed sensor, VTECpressure switch (All except D16Y7 engine), CKF sensor (A

except 81642) (BRN/BLK)
Shielding between the PCM or ECM and these components (all have BRN/BLK wires):
CKF sensor, TDC/CKP/CYP sensor, Primary and secondary heated oxygen sensors,
Knock sensor (All except D16Y7 engine), i/ainshaft speed sensor (Arf except CW),
Countershaft speed sensor (A,/T except CVf), Drive pulley speed sensor (CW), Drivenpulley speed sensor (CVT), Secondary gear shaft speed sensor (CVf)
I Badiator fan motor, Right front parking/turn signat tight, Right headtight
G20214-4I Cruise control actuator, Left front parking/turn signal lights, Left headlight, Rear window
I washer motor, Windshield washer motor, Washer fluid level switch (,99-'00 Canada)
G401| +-o
and
14-7
Accessory power socket, Brake fluid level switch, Clutch interlock switch (M/T), Clutchswitch (lillT with cruise/D16Y5 engine with MfD, Combination wiper switch (Z wires),
Cruise control main switch, Cruise control unit, Dash lights brightness controller, Data
link connector, Daytime running lights control unit (Canada), Gauge assembly, Horn('96-'97 models), Integrated control unit, Interlock control unit (ArI), Keyless door lock
control unit ('99-'00 models with keyless), Moonroof close and open relays, Moonroof
switch, Park pin switch (A/r), Power window relay, Rear window defogger relay, Rear
window defogger switch ('96-'98 models), Steering lock, Stereo radio tuner (,96-,98
USA: LX, EX, and HX), Turn signal/hazard relay, Windshield wiper motor.....plus
everything grounded through G402
6-6

Power Distribution
- From Fuses to Relays and Components (cont'd)
@
FUSE 24{PAr/ FELAY}{S/R RELAY)?
_____
s7
FUsE 25 IMETEF I-------r-----l rII\IA6JI r*r tttrecnlreo \-
| | lcoNrRoLUNlr \
I i iPaseTo \
I L__Jlj:p,l2uo II vtt|| bl
tf
lt.---l--- "---t I---r--'g- -------Jcs01 '16YC419
PHata'a ' a PHolo 6"vtEw 55 ' yEL a vtEw 49
:t
i;l-l-l. i
'ttlll
:rttl' L--J !-,J. SHIFT INTERLOCK .
: LocK coNTRoL ,
; SOLENOID UNIT' Page 138 Page 138 I' or 138-1 or 138-1I DHOTO 7- D4O|O 69I vtFW26
'AT ---------
.-- A/T --.
"..ij#j--
",li,,lii"lii-lii^,li".l-l
i------------::r::-:-::'::---::r:-:-:--T--------1
tl
tl
alt------- --------J
.I POWER
I wrNDow
1 RELAYj Page 120
uorlI
I
c501 17C420 11
r::1
I uorr I
ll
MOONROOFOPEN RELAYPage 122ot 122 1
r=?1
I uorr I
ll
MOONROOFCLOSE RELAYPage 122ot 122-1
vtEw 13
(Not (NotUsed) Used)
ABSCruiseControlShift-upInorcalor 'r _
t
GAUGE ASSEMBLYPages 80, 80-1, 80'2,80-3, 81, 89, and 89-1
10-6

PGM-FI (All '9G'98 Models except Dl685; '99r0O D16y5 with M/T)
TRANSMISSIONCONTROLMODULE (TCM)
llEv/ 69
ECM ECMcontrol controlReference data datavollage inDutNREF) OMA}:q{.J
(VREF) OMA) OMB)Reference ECM ECMcontroldatajnput
EGRcontrol shift' I solenoid
i
-l
"""'"x :i1",'
sofenoid lock Pa(klvave Circult neutr; I vave circuit neutral| | control control inPut, ! (EsOLr {sru, (A}FNP):L------
voltag€ controldataoutput
I
{
ta
i;;;;';;
."
*
'i\,
' circuit neutral Reverse D4 D3 2 indtcator, ;' control input input input input input control | -,| (sLU) rAlPNPr TATPFI {ATpO4i dlPD3) tAfPzr rDa rNDl | /
[J=:ITTIT'{t
' Interlock See Automatrc: Svstem Transmission Controls I
i i controt
i
"'J;:;;,.,"^,
!
l1l
"lL
:1,.
i
".f:;;,.,"^, 1.,."n,
: I lt ti.."stEBkTJBi ""il*l"*
: | /" I SOLENOTD VALVE
i \J PHaro 12a I
i
t'i!",,,
Bi"ifit**1
';
i l ;;;a ',, pase 14 !'#$tl ii{"Ff*,
i
*-1.
---f !.gg1mr..
' 4 cror| - PHAfO 123
23-6

Security System
- All CX and DX Models (cont'd)
NOTE: Wires that look like this S--------S
are part ol the optional Security System
harness installed between lactory
harness connectors.Frompage j33_9.
@
aLI(AVHI
IAIKWHT
STEERINGLOCK
v
""'ll
'99198 models
(l or
1T
Jl.
'99100 models
sEcuRrwLEO
c415
vlEw 14
l-
SECURITYSTARTERCUT RELAYPHO|O 53vtEw 12
BLI(FEO't1
au(/FEo
c433
Aubrnatb Transmission
c4r 5PHOTO N
AU(WHT't0
BLXAVI{TBLKT'!VHT
2('98-'00 mod€ls 5)
('98100 models 3)4
A"IT GEARPOStTTONswtTcH
".**"rI
[ :,iSTARTERCUTRELAYPHO|O 54PHO|O 129( 9€ model)
( 9+ 00 models)
?
I
I
I
I
I
1-sel-oo rnJ"ls z1'[
".*"9tr
c433
CLUTCHINTERLOCK SWITCHClosed with clutchpedaltully depressed.
".o""0! ".o".0 seeaE4 Starting
ar-rvneo ll System
'f, "";%,,BLK TTBT I
vrEw28
r-11------.|STABTER
! r3r smnren I PHoro 34
| 1 coit ; SoLENOID I
i !.__J iL--------J
"===-F=F*F,Ff
Tfo?"
It -,/ Pase 10 l
!ltb3'-fi:-#-1iln i
ll .",;T; "":JI------;;lt
ll *"ll ll ELKBEDII
,JL----- 'dl*------ 'll t{
paso 14€. " y
I
*-l
L_______l.------+;_ -
PHO|OST
133-12

- '96-'98 CVT
l-l-'l BRAKE SWTTCH r--'l THROTTLE
| | lclosed wrlh I ..-. -, I PoslrloN
l&l!fii{+f i.:1r1'jflI$s"
o""*"tr[
"o'ouloo,
".o"i I
.f# ffiqll"
jilll I lllb ;s"",
!
-
rr,.l*"- "oI
+ | i.'*-w- - - - -,r-.1 j If$$Bi,
e* !;;iiffi :,?H,,, ry*:' !fi3$lt3'
l6,i8 L"':__"f# *'_lgs,g;
fl*UB;t;"
ii'";i;'
"*l u't""
i-u;-*"--- ,s l [ltsff?.
Lj:'sri:--::l itjs[-
=ffan+'INTERLOCKCONTROLUNIT
vtEw 26
;-;5[ BLKBIUI BLKBTU See A/f Gearar< Positioni lndicator
NOTE:ln case of systemmalfunction, theshift lever can bereleased by pushingthe ignition key intothe release slot nearthe shitt lever.-------r A/T GEAR
il{t iffi'dqF"I l,'- -\-" l;#i;",;
l" i'-!
L---J.---JBLK I C433
"IYW!'" :."qsrqft
rE.===---- F-
Shltt Lock ClrcuilPrevents shift locksolenoid lrom€nergizing unleesbrake p€dal isdepressed andaccelerator pedal isnot depressed.
Key ldedockClrcultAllows k€yinterlocksolenoid tobe energizedunl6ss shittlever is in'P"
;;.r";;
ll e
138-1

Connector Views (cont'd)
13. Moonroof Close Relay
'96-97 Models:
1 WHT (Battery input)
2 GRN//EL
{Motor conirol)
3 GRN/ORN(lgnition lnput)
- Brown ('96-'97 models) or Gray ('98-'00 models)- Upper left kick panel- On moonroof wire harness
5
6
BLK (Ground)
GBN/RED (Coilconkol)
'98r00 Models:
GRN/YEL(Motor control)
WHT (Battery input)
GRN/RED(Coil control)
4 BLK (G401)
5 GRN/ORN(lgnition input)2
3
15. Moonroof Open Relay
- Brown ('96-'97 models) or Gray ('98-'00 models)- Upper left kick panel- On moonrool wire harness
'96.97 Models:
1 WHT (Battery input)
2 GRN/FED(lvlotor control)
3 GRN/ORN(lgnition input)
'98r00 Modelsi
BLK (Ground)
YEL (Coil conkol)
5
6
GBN/RED(lvlotor control)
WHT (Battery input)
YEL (Coil control)
4 BLK (G401)
5 GRN/ORN(lgnition input)2
3
,1^t
6
14. C415
- Brown- Above underdash fuse/relay box- Connects main wire harness to steering lock pigtail
* 1: [,4ale BLKryELFemale - BLKMHT*2: BLK,/WHT(Start oulput)
l\.4ale - BLU/REDFemale - BLUruVHT(lgnilion key switchoutpur)
N4ale - WHT/BLKFemale - WHT(Battery input)
l\,4ale BLKFemale - BLU^VHT(Ground)
Ani Male - WHTFemale - WHT /EL
(Key interlock switchourpur)
A/T:WHT/BLU(Key interlocksolenold control)
A"rT: WHT/GRN(Battery inpul)
*1= Vehicles pre-wired for accessory security system*2= Vehicles not pre wired for accessory security system
202-4
16. C422
- Green- On tront ol under-dash tuse/relay box- On main wire harness
7
l
2
3
4
5
6
7
FED/BLU (Headlights)
REDAVHT (Headlights)
WHT (Fuse 48)
BED/GRN(Headlight switch)

-25. CW Transmission Solenoid
- Gray- Lower front of transmission- On engine wire harness
1
2 GRNAVHT (H LC LS +)
3 BLUAVHT (SH LS +)
4 YEL (SC LS +)
5
6
7
8
GRN/BLK (SOL IN H)
PNK/BLK (HLC LS _)
GRN|VEL (SH LS -)
PNK/BLU (SC LS _)
26. Interlock Control Unit
- Gray- Behind left side oJ dash, right of steering column- On main wire harness
1
7
2
3
4
WHT/BLU (Key interlocksolenoid control)
YEL (lgnition input)
YEUBLK (Shift locksolenoid control)
BLK (G401)
WHT (Key
interlock switch input)
BLKBLU (Park lnput)
WHT/RED (Shinlock circuit control)
WHI/BLK(Park pln switch input)
6
7
27. C352
- Gray- On bottom of under-hood {use/relay box- On main wire harness
1
789
I
1
2
3
4
GRN (Fans)
BLUAVHT (fuC
compressor controlS)
WHT/BLK(Hazard warning lights)
WHT/BLK (Fuse 42)
BLKRED (A/Ccompressor clutchrelay control)
BLK,/YEL (Fuse 17)
WHT/GRN (Fuse 52)
WHT (Fuse 48)
6
7
8
I
28. C101
- Gtay- Left rear of engine compartment- Connecls engine wire harness to main wire harness
1 l\,4ale - BLK/YELFemale - BLK,ryVHT(Fuse 15)
2 BLK (G101)
3 YEURED (Oilpressure indicator light)
4 *1/*4: BRN/BLK (G101)
5 YEUBLK (PGI\4,FD
6 WHT/BLU(Charging system)
7 YEL/GRN (Gauges)
I *1: BLU (lgnition
sYstem)
9 Male - BLK VHTFemale - BLKRED(Slarting system)
10 *2: BLKryEL(lgnition system)*3: Male - BLK/YELFemale - RED(lgnition system)
*1= 96-'98 models: All'99: D16Y5 with M,iT*2= '96-'97 models: All'98-'99 modelsr GX*3= '96-'98 models: All except GX*4=: '98''00 Models: GX
202-7

Connector ldentification and Wire Harness Routing
Connector
or
Terminal
Number ol
Cavities/
Color
LocationConnects toNotes
Main Wire Harness (Left side of dash and floor branch): '96-'97 models
c401
c402
c403
c404
c405
c406
c407
c407
c408
c409
c410
c411
c412
c413
c414
c415
c416
c417
c418
c419
c420
c421
c422
w+4J
c424
c425
c427
c428
c429
c430
c431
c432
c433
c434
lJ+OC
c437
v+.to
c439
14-GRY
4-ORN
4-NAT
14-GRY
4-NAT
8-GRY
2-GRY
2-GRY
1-BRN
1O-WHT
12-GRY
24-BLU
3-YEL
16-GRY
4.BLU
7-BRN
6.NAT
2-N/A
2-YEL
18-GRN
2O.GRN
18-GRN
7-GRN
6-GRN
4-NAT
4-WHT
8.WHT
6-WHT
4-NAT
7-NAT
3-GRY
8-GRY
4.GRY
14-GRY
2-GRY
4-GRY
26-GRY
22-GRY
1-GRN
Behind left kick panel
Behind left kick panel
Under left side ot dash
Under left side of dash
Under left side of dash
Under left side of dash
Under lett side ot dash
Under left side of dash
Under left side of dash
Behind under-dash fuse/relay box
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Above under-dash fuse/relay box
Under left side of dash
Under left side of dash
Under left side of dash
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Front of under-dash iuse/relay box
Front of under-dash fuse/relay box
Under left side of dash
Under left side of dash
Behind steering column cover
Behind steering column cover
Behind steering column cover
Behind steering column cover
Under left side of dash
Under lett side ot dash
Below front console
Below front console
Below front console
Below front console
Behind lett kick panel
Behind left kick panel
Behind under-dash fuse/relay box
Floor wire harness
Floor wire harness
Light flasher relay connector(Security)
Cruise control unit
DRL control unit connector A
DRL control unit connector B
Roof wire harness
Moonroof wire harness
Front fog light connector
Integrated control unit
Dashboard wire harness
Dashboard wire harness
SRS main harness
Data link connector
Starter cut relay
lgnition switch
Security starter cut relay conneclor
Clutch switch
Clutch interlock switch
Under-dash fuse/relay box
Underdash fuse/relay box
Under-dash fuse/relay box
Under-dash fuse/relay box
Underdash fuse/relay box
Horn relay
Brake switch
Combination wiper switch
connector A
Combination wiper switch
connector B
Combination light swilch
connector A
Combination light switch
connector B
Cable reel
lnterlock control unit
Secondary heated oxygen sensor
sub-narness
A,/T gear position switch
Shift lock solenoid
Park pin switch and A,/T gear
position console light
TCM connector A
TCM connector B
Under-dash luse/relay box
ABS
Optional
Canada
Canada-2
'4
Optional
AtT
M/T
Optional'5
M/T
Atl
'6
AN
AN
Atf
CVT
CVT
G401Left kick panelBody ground, via main wire
harness
.2: Without moonroof .5: M/T (with cruise control or for D16Y5 engine)"4: With moonroof .6: With secondary heated oxygen sensor (HO2S)
203-20