ect sensor HONDA CIVIC 1998 6.G Workshop Manual

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

PRIMARYH02SSHIELDPage 24-7 ,24-8, ol24 10
tl
r_i
.--- D1685engine --.
' TNJECTOR I: CoNTROL ;; MoDULE ,, Page 25-1 ,t PHO\O 1aa :I vtEw 77
i r-- --r I,ll:
ill;
816l€I.--- D16Y8I englnes i. SECONDARYI Ho2s SHTELD :, Pages 23-11 I' and 24-11
I z-r; l.--.1 :
c131
(c101 D16Bs)
. ORIVE PULLEY
: SPEED sENsoR I. SHIELD ,' Page 39-12
l---:
: 1.--,1 ;
:l | :
c102
CKFSENSORSHIELDPage 24 2
tl
\..
BFN/BLK
------_I
SECONDARYGEAR SHAFT :SENSOR SHIELD ;(D16Y5)P.^a 'lO,1 ,oifu-alisirrrSPEED SENSOR :SHIELD :(016Y7/D16Y8)Page 39-9
F--.1
tl
rJii
t
rDc/cKP/CYPSENSORSHIELDPage 2O-2
tl
\,.
T
""","a* |
i
___r_
14-3

lgnition System
- All '96-'98 Models except Dl685; '99-'00 Dl6Y5 with M/T
NOTE: For Service Check Connector details, see page 23-3.
@
CKP CYPsensor sensorinput input(CKPP) (CYPP)
X,*.,
rDcsensorInpur(IDCP)
POWERTRAINor ENGINECONTROLMODULE(PCM or ECM)
POWERTRAINor ENGINECONTROLMODULE(PCM or ECM)
xr*"
BLKI/EL
I
I
BLK/YEL
I See Power
H Distribution,
J__99'"'_
I
I
I
I
I
I
UNOER-OASHFUSE/RELAYBOX
"a*,telfi
u I """%t'3.
,rrrr.iFiFx".-,''ril'fi :T-DASH ll pagelo-1.FUSE/ I( FUSE 9
F.itl, Lq::---
".:lo63
10
BLK,YEL
10
c101
vlEW28
c'120
vlEW29
BLK
c14
c120
vlEW29
rIDcM) IGKPM) (CYPM)Sensor Sensor Sensolground ground ground
L-- - - -- -----J PHora 36
L-----------J
:L_1__I,
! iii:?ifq"l
I
**:'
*-"*,t";'
= PHO|O 33PHOTO 123ICW)
Secondary
ti <..-/4 i t
iLi:"_gl_i iL-----1!-----r
96- 97 models I 98- 00 modets
20
Spark Plugs

lgnition System
- All Dl685 engines; All '99-'00 Models except Dl6Y5 with M/T
NOTE: For Service Check Connector details, see page 24-4 (except D1685) or 25-4 (D1685).
STEERINGLOCKPOWERTRAIN
lm- sii.- s*- iffffiEgr
I '8f", '3#n '3#n | (Pcn' or EcM)
L------ -----J Wro 86
',L_I__J,
!l---+--l !
'i---
j----i'
fl '","?siii,xl
I I I
i*n"'."
-"1 "-l '-l *"-^lr";J
I I I ='i.{i31i",,-
All except D1685D1685
gLK.Yer t
u l9f#'
fi
"*1,[
F,*';.,
!'T-f*-'i"i! {F+ Distdbution,
LJ_gg'n'_
i.x,r
9'x*"
-.t
iF--Hs-,mT-l
ll pase lGi. I
l( FUsEe I
!Lig::___J
.I UNDER-I DASH
a FUSE/
! RELAY- BOX
1 Y C419 UNDER-^,ol',lill,l?"u' rlir?IA) RELAYBOX
.t0
BLKI/EL
10(D16Y7/D16Y8 s)
c101
PHO|O 142 lA1685)vlEw 2a
c120
vtEw 29OFN/ALULT BLU orALU/GRN
BLU,^VEL
c120
vtEw 29
ELKWHT/BLU
7
FED
c21c9
ALK
c30
;;--;;---o;;;lSensor Sonsor Sensor I
POWERTRAINor ENGINECONTROLMODULE(PCM or ECM)
ground ground gtound
L ------ -----J PHoro 36
Sec!l|dary
Sparh Plugs
20-2

PGM-FI (All '9e'98 Models except D16B5; '99-'00 D16y5 with M/T)
- D16Y7 Engine
' I pressure Ret€rence sensor ECT IAT primary I' i sensor input , voltag€ input sensor rnput sensor inDut HO2S inout I| ! praNKi ' OCc2) irpsr (Ecr)' ,tAr) ' l"no)si- I, r (Pr^Nn, \wtz) {rPs) iEcr} (AT) {PHozs)lL-------J----- --_-__J: Dis y j oro y ory D2 y D8y D7y
i.--1*.".ffi,"[
',[
]ilBLKryEL
l='i$d""-""---ffi][.[
.l
I ul,
I
Iffiry I IH;
iw| irT_nHBRrfrnEBsi+lrplffii.;t
llffit!$il
i4[ffi- i lfiJs+t- lfj$l;?," rrrs.*r"se a r.ff
phu Laa
i;ftffii .]4 {_:{*;f,
i"# l i:l'lz"
: 13 V"*3J
iclll ! 'e""
2Y lY LrGRN
'll---o19;.?:.,,GFN/
it io-rb as ; BtK I GFN BLX I GFN.BLK ll cRN BLk
(Termi-rl, lt nals, '97 model: I 8-14)r - - - California Coupe, ll PHoro 46Calitornia Sedan LX I I,E, J8'98 model: all
r (suzl lPo2sHrc) I! Sensor inmary'| 6rl1d Ho2s \
a - heater \
t control I,L------- -----J'
23-8

I
t
! c,orna, (LG1)
Referencevoltage(vcc1)
ServicecnecKconn€ctorInput(scs)
POWERTRAINolENGINECONTROLMODULE(PCM or ECM)PHOfO 86
MapsensorinputSensorground(sGl)
A10
Ground Ground Ground1LG2) (PG1) (PG2)
See GroundDistribution,page 14-2.
MANIFOLDABSOLUTEPRESSURE(MAP}SENSOR
PHO|A 49 p16v7l
See ABS,SRS
Y
I
--J
SERVICECHECKCONNECTOR
vtEw39See GroundDistribution,page 14-5.
I
I
___JSe€ Ground: c402
(cont'd)
24-3

PGM-FI (All '99-'q) Models except D16Y5 with M/T and D1685) (cont'd)
- Dl6Y7 Engine
ct6
(
k
GRN
GRN/ALK
II
)
-l.a
FUELTANKPRES-SURESENSOR(See S/M1
BLK
GFN/BLK
GNN/BLK
6
GAN/8LX
8
GFiI/BIK
tis3 :INTAKEAIRTEMPER-ATURE(|AT)SENSOR
PRIMARYHEATEDOXYGENSENSOR(HO2S)
c'123
c123
cs68PHOTO 103
c401
vtEw 40
ct31
vlEvt S9
FffiflH
{
r,Bi".'#
H
r{
t
f 5:o#'""'"n
rtrt
BLK
at
It
lFueltan* TP \lpr€asura Rg{grsncs ssnsor ECT IAT Primary IF€nsor inpJt voltago input sensor input sensor inpul HO2S inout I| (rt^xn Naca Crpsr lscn - -- 1-ran -- -(p,ioi3i-- ,L------- -----J
BLKT^YEL
clt5(Ierminals 8-14)
vlEw38
contaol
24-8

- How the Gircuit Works
With the ignition switch in ON (ll) or START (lll),
battery voltage is supplied through fuse 15 and
the BLI(WHT and BLK/YEL wire to the vehicle
speed sensor (VSS). The sensor is grounded by
the BLK wire to G1 01 . The speedometer and
other control units in the circuit supply about 5
volts to the BLU/WHT wire. The vehicle soeed
sensor (VSS) intermittently grounds the
BLUMHT wire which generates a pulsed signal
in it. The number of pulses per minute
increases/decreasos with the soeed of the car.
Reter to th€ Service Manual (Section 23, Electrical)
tor specific tosts or troubleshooting procedures.
33-1

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

A/T Controls (All '96-'98 Models except CW and GX)
r.(
r5A see power I
--li$"i':,--iL-.At----- __*____..,,53-j"i__8 Y 93^s_1- 8Y C352'"'".u
I iii'i"' ""'o"* | i#?1o.'
ll see power ll wrr cnn See Power
la--- oisirioution, ! -t 6iri,iortion,
[--*
t"*tr*t1,'.':,:;i. wHr GFN lt page 10-13.
,i(with crurse 4) Al"'rl(-1 BRAKE swrrcH
| lClosed.with brake
Ir-I Il,?,|fll,"P'"""oL*--J
c18lr 82
"ar-"t I
I
See VehicleSpeed Sensor(vss)
ct31PHO|O 35vtEw 59
r< See ABs'
UNDER"HOODFUSE/RELAYBOXI
I
I
BFN
9
BFN
o
""il
SERVICE CHECKCONNECTOR
See GroundDistribution,page 14-5.
I
YEL
c124
L__lH:""".: G402
SHIFTCONTROLSOLENOIDVALVES
LOCK-UPCONTROLSOLENOIDVALVES
,. L ---- - - --.#ku" :::::'o f
---------tty"c;11,, l;-,f l;?t?:if,-:;tr *";.!, *"
c10 ,| Ds^'
I Lvou, (SKSV,
! Battery input Brake lwitch I
service nPUt ehin t;;;;i- Vehrcte Linear sotenoid Shift controt sol€noid Lock-up conkol iJ'[
'\
connector speed input valve conhol solenoid vatve controt tliiJ"it \uo trut tconrrol t: (scs) (vss) {Ls}) rLs ) {sHA' {SHB, (LCA) (LCB) {S-U) .--:-'--J
ct28
39
GFN/ALK
(