relay HONDA INTEGRA 1994 4.G Owners Manual

lgnition System
Circuit Diagram
CKP: Cr6nk.halt posilioo sonsorCYP| Cylindor position s€nsor
TOC/CKP/CYP SENSOR
-_r_1=__E
-J---L--L--Lr
ORN
U'+++
UNOER- HOOO FUSE/RELAY BOX
ECM
V
I
YEUGNiI
tG tTtoN c0NTROl-MoDUr.r (cMl
/ H8s built - in \I OOrsO I
23-88

Charging System
Troubleshooting
Bofore troubleshooting check- tightness of the alternator belt (see page 23-1Og).- that the malfunction indicator tamp lMlL) of the ECM does not blink. lf it blinks, refer to section 1 1.
lf the charging system light is on, or th€ battery is dead or low, p€rtorm the following tests in the order listed below:
1. Baftery Test (see page 23-66)
2. Charging System Light Test
3. Alternator/RegulatorTest
ChErging Sysrom Light T6tt
o pago 23-1011
FUSE/RELAY BOX(r..r tid.)
I'{TEGRATEDCO]TTROL UI{IT
NOTE: After this test or relaledrep6irs, roconnoct the controlunits. th6n aoset th€ ECM to cloarany cooos.
H.tchb.ck:Sad.n:
ABS COI{TROL UNIT
2A-P CONi{ECTOR
23-100
Tu]n tho ignhlon srvitch on (lll.
Does th€ charging syslemlight come on7
Does tho charging systemlight go ott?
Turn the ignition switch otf.
Disconnect the 4-P connoctorlromt th€ altornator.Ramova tfto 26-P connactd tromth. ABS control unh snd lh. in-tggrotad conrol unh ttoln tha tadol tho und..dlrh tu!a/r.l.y box.It thr .hlrglng .yrtom lighl .l.Y.on, rrpalr tho ahon to ground Inrhr WHT/BLU wi...
Turn the ignition switch on {ll),
Does the charging systemlight come on?
tlo rhon o. opon h ih. WIfT/BLUwho. Porfom dtomrtor/rogdttolrost beo pag. 23-l02l.
26.P CON ECTOR
ABS CONTROL

lFrom page 23-10O)'No. 24 (15 A): 818B'lNo. 24 (20 A): 818C1ongrneengine
Turn the ignition switch ott.
Check fuse *No. 24 in the under-dash tuse/relay bor.
Disconnect the 4-P connectorIrom the alternator.
Turn the ignition switch on {ll).
Ch6ck forvoltago between tho lGterminal (BLK/YEL wire) of rho il-Pconnector and body ground.
ls there battery voltage?Rgp.i. op.n in th. BLK|'EL wiro.
Ground the WHT/BLU wire at theL terminal ot the 4-P connector.
Chock for ! blown chrrging ry3-rom llghr bulb. It rh. butb i! oK,ropair open in lho IiYHT/BLU wiro.
Does the charging system lightcome on?
wirg sideL IWHT/BLUI
(cont'd)
23-101

Charging System
Alternator Replacement
NOTE: The original radio has a coded theft protection
circuit. Be sure to get the customer's code number before
- disconnecting the battery.- removing the No. 32 {7.5 A) fuse from the under-hood
fuse/relay box.- removing the radio.
After service, reconnect powet to the radio and turn it on.
When the word "CODE" is displayed, enler the cus-
tomer's 5-digit code to restore radio operation.
1 . Disconnect the ground cable from the battery nega-
tive (- ) terminal.
2. Disconnect the alternator connector from the al-
rernaror.
TERMINAL NUT
B TERMINAL
ALTERNATORCONNECTOR
Remove the terminal nut and the WHT wire from the
B terminal.
Loosen the adjusting nut. then remove the mount-
Ing nul.
MOUNTING NUT44 N.m (4.5 kgt.m, 33 lbf'ftl
5. Remove the alternator belt from the alternator pulley.
6. Remove the lower mounting bolt, then lift the alter-
nator upward.
23-104
ADJUSTING NUT
w
UPPER MOUNTII{GBRACKET BOLTSil4 N.m {4.5 kgl'm, 33 lbl'ft}
24 N.m 12.4 kgf'm,'t 7 tbf.ftl
\ (^,-(\
\-/ I
7. Remove the lower and upper mounting bracket bolts
and the mounting brackets.
BRACKETBRACKET BOLTS44 N.m (4.5 ksl.m, 33 lbt'ft1
8. Remove the adiusting nut and upper mounting bolt,
then lift out the alternator.
9. lnstall the altetnator in the reverse order of removal.
CAUTION: Adiust tho alternalor belt tension aftor
installation (seo Page 23-1O81.
NOTE: Reconnect the battery ground cable and turn
the radio on. When the word "CODE" is displayed,
enter the customer's 5-digit code.

Fan Gontrols
Component Location Index
For the A/C system, see section 22.
UNDER-HOODFUSE/RELAY BOX
RADIAIOR FAN REI.AYTest, page 23-68
CONDCNSER FAI{ BELAYlwir6 color3: ELKnirHT, WHTIIBLUryEL, and BLU/BL( ITest, page 23-68
ENGII{EcooLA TTEMPERATURE{ECT)SwlTCHTesr, page 23-'l 12
FAN MOTORTest, page 23-112
BADIATOR FAN MOTORTest, page 23-1 12
23-109

ul{o€R - DAstlGIINONSWITCH FUSC/RELAYBOX
Circuit Diagram (Without A/Cl
UI{OER - HOOD FUS€/REI.AY BOX
6r F'rrr^'l.{ ots YEt {<\o*r
\-Y -l
ECM
V
Gtr{
l,*^,
($fffiHil'r"n.''
I
t?i'r?Tdf.ol
I
ffi,"'l
IBtl(
I
I:
G10l
Fan Controls
23-110
No.4l {lmA, No.39l50Al
FIIF.-

Gauge Assembly
Gircuit Diagram
r3 [o.24 ll5 ): 81E81 dttr10,24120 ):B1&1.mirulocn-D sHRISC/RELAY &X
Tw'lcu I
+ 3r,4ts. rt_gstr
Il{l(
IA:6t0l
sastNtT
T
FUSE
snstxocAloRUGTIT[fffi"vv
N'ElGAI.EEsExDr6 ulllT
.lsffiisl{,MT
VI- r Gin&no
".lJrlI C,afi/ilD
ilrlrl
in- | ()" | | snrxt. r I Rlp
i |ffi.rlItrr
rl
iAt:
r6ii G30r
GMVn!O
#nI RUNIiITG II uGfiTs \
l8flfl*' ;
ht0/Git{
IGn[/Ft0
6mii'
I-
a{G|l|€c@lat{TIl$EiA'l iltErcTtSAdTGtxt
23-116

Speedometer/Trip Meter/Odometer
Troubleshooting
NOTE: The numbers in the table show the troubleshooting sequence.
Item to be inspected
Symptom
-9
;6+*c.r i.(D
zc*f
;59cd)=
E
a
6
E
'iF
o
(L
:lt)a
o
-9
>g
q)
qlv
E
'
E
oo
Odometer and trip meter wotk, but speedometer does
not.12
SDeedometer works, but odometer and trip meter do
nor,1
Speedometer. odometer, and trip meter do not work.
VSS Input Test (At ham€ss side of 3-P connector)
No. Wir6Tost conditionT€st: Desirsd resultPossible cause it result is not obtained
1BLKUnder all conditionsCheck for continuity to ground:
There should be continuity.
. An open in the wire. Poor ground (G1O1)
BLK/YEL
lgnition switch ON (ll)Check tor voltage to ground:
There should be battery
voltage.
Blown *No. 24 fuse in the unde.-
dash tus€/relay box
Short to ground
An open in the wire
ORNlgnition switch ON (ll)Check for voltage to ground:
There should be about 5 V.
. Shon to ground
. An open in the wire
NOTE: A short to ground in the
vSS Tost
Speedometer does not work.
ORN wire can be caused by a short in any component connected to lt.
3-P CONNECTOR
Inspect 'No. 24luse in the under-dash tuse/relay box beloretesting.
Turn the ignition switch ON lll).
Measure voltage between theBLK/YEL wire terminal and the8LK wire terminal in the harnessside of the 3-P connector.
{To next page)
23-120
24 (15 A): 81881 engine No. 24 {20 A): 818C1 engine

Fuel Gauge
Gauge Test
NOTE: Refer to page 23-1 16 for the luelgauge systemcircuit.
'1. Check the No. 15 {1O A) fuse in the under-dashfuse/relay box before testing.
2. Remove the rear seat (see section 2Ol.
3, Remove the protective cover and access Danel Jromthe tloor.
4. With the ignition switch OFF, disconnect the 3-pconnectot from the fuel gauge sending unit.
PROTECTIVE
Connect the voltmete. positive paobe to theYELMHT terminal and the negative probe to theBLKMHT terminal, then turn the ignition switch ON(ll). There should be between 5 and 8 V.
a lf the voltage is as specified. go to step 5.a It the voltage is not as specified, check for- an open in the YEL/WHT. BLU/WHT orBLK/WHT wire.- poor ground (G5O2).
o.Turn the ignition switch OFF. Attach 8 jumper wir€between the BLKA HT and YELMHT terminats.then turn the ignition switch ON 0l).Check that the pointer of the fuel gauge starts mov-ing toward the "F" mark.
CAUTION: Turn th€ ignition switch OFF boforo thepointer roachas "F" on tho gauge dial. Failuro to doao may damage tho fuel gauge.
NOTE: The fuel gauge is a bobbin (c.oss-coitl typegauge. hence the tuel level is continuously indicat-ed even when the ignition switch is OFF, and thepornter moves more slowly than that of a bimetalrype gauge.
a lf the pointer of the fuel gauge does not move atall, replace the gauge.
a lf the gauge is OK, inspect the {uel gauge send-ing unit.
23-123

GaugeTest
NOTE: Refer to page 23-116 fot the wiring description
oJ the engine coolant temperature (ECT) gauge circuit
diagram.
1. Check the No. 15 (10 A) fuse in the under-dash
tuse/relay box before testing.
2. Make sure the ignition switch is OFF, then discon-
nect the YEL/GRN wire from the ECT gauge send-
ing unit and g.ound it with a jumper wire.
Turn the ignition switch ON (lll.
Check that the pointer of the ECT gauge starts mov-
ing toward the "H" mark,
CAUTION: Tuln th6 ignition switch OFF botore th€
point reaches "H" on tho gaugo dial. Failuro to do
so may damago tho gaugo.
a It the pointer of the gauge does not move at all,
check Jor an oDen in rhe YEL or YEL/GRN wire.
lf the wires are OK, replsce the ECT gauge.
a It the ECT gauge works, test the ECT sending
untt.
J.
Engine Coolant Temperature (ECTI Gauge
ECT Sending Unit Test
Disconnect the YEL/GRN wire from the ECT send-
ing unit.
With the engine cold, use an ohmmeter to measure
resistance between the positive terminal and the en-
gine (ground).
Check the temperature of the coolant.
Run the engine and measure the change in ,esistance
with the engine ai operating temperatu.e {the radi-
ator tan comes on).
5. ll the obtained readings are substantially different
Jrom the specifications above, replace the ECT send-
ing unit.
23-126
POSITIVE TERMINAL
Temperatu.e1330F (560C)185.F (850C)-
2120F (1000c)
Resistance (O)'t3746-30