bulb HONDA INTEGRA 1998 4.G Workshop Manual

3.Fuel Cut-off Control
. Du ring dece leration with the th rottle va lve closed, cu rrent to the fuel injectors is cutoffto improvefuel economyat
speeds over following rpm:. B'1881 engine: 970 rpm {Canada model: 1.050 rpm). B18C1 engine:970 rpm {Canada model: 1.050 rpm). 818C5 engine: 1,300 rpm (Canada model: 1,400 rpm)
. Fuel cut-off action also takes place when engine speed exceeds 7,000 rpm (B'1881 engine), 8.100 rpm (818C1
engine) or 8,600 rpm (818C5 engine), regardless ol the position of the thronle valve, to protect the engine from
over-revving.
A,,/C ComDressor Clutch Relav
When the ECM receives a demand for cooling from the air conditioning system, it delays the compressor from being
energized, and enriches the mixture to assure smooth transition to the A,/C mode.
Evaporative Emission (EVAP) Purge Control Solenoid Valve
When the engine coolanl temperature is above '154'F (68'C) and the air conditioner on. the ECM controls the EVAPpurge control solenoid valve which controls vacuum to the EVAP purge control canister.
Intake Air Eypass (lAB) Control Solenoid Valve*a
When the engine rpm is below 5,750 rpm, rhe IAB control solenoid valve is activated by a signal from the ECM, intake
air flows through the long intake path, then high torque is delivered. At speeds higher than 5,750 rpm, the solenoidvalve is deactivated by the ECM, and intake air flows through the short intake path in order to reduce the resistance in
airflow.
Sell-diagnosis Function lMalfunction Indicator Lamp {MlL)lWhen an abnormality occurs in a signal from a sensor, the ECM supplies ground for the MIL and stores the code in
erasable memory. When the ignition is initially turned on, the ECM supplies ground for the N4lL tor two seconds to
check the MIL bulb condition.
Two Driving Cycle Detection Method
To prevent false indications, the Two Driving Cycle Detection Method is used for the HO2S, fuel metering-related, idle
control system, ECT sensor, TWC and EVAP control system and other self-diagnostic functions, When an abnormality
occurs, the ECM stores it in its memory. When the same abnormality recurs after the ignition switch is turned OFFand ON (ll)again, the ECM informs the driver by lighting the MlL.
However, to ease troubleshooting, this function is cancelled when you shon the service check connector. The MIL will
then blink immediately when an abnormality occurs.
4.
5.
6.
3.
4.
ECM Fail-safe/8ack.up F0nctions
1. Fail-sate Function
When an abnormality occurs in a signal from a sensor, the ECM ignores that signal and assumes a pre-programmed
value for that sensor that allows the enqine to continue to run.
2. Back-uo Function
When an abnormality occurs in the ECM itself, the fuel injectors are controlled by a back-up circuit independent of the
system in order to permit minimal driving.
11-49

I
I
It:
PGM-FI System
Engine Control Module {ECMI
,i
I
{
ili
NOTE: lf this svmotom is intermittent, check for a loose fuse No. 25 METER (7.5A) in the under_
dash fuse/relay box, a ooor connection at ECM terminal A18, or an intermittent open in the
GRN/ORN wire between the ECM (A18) and the gauge assembly.
Wire side of female terminals
I
The Mellunction Indicator Lamp(MlLl never com€3 on leven foltwo secondsl alter ignition islurn6d ON lll).
Turn the ignition switch ON (lli.
- Repair short or open in th€wire betwe€n No. 25 METER{7.5 A}fuse and gauge assem-bty.- ReDlaco No.25 METER 17.5 A)fuse.
ls the low oil pressure light on?
Try to start the engine,
Check for an open in ih6 wires
IPG lines):1. Turnthe ignition switch ON (ll).
2. Measure voltage betweenbody ground and ECM connec-tor terminals A10 and A23 indi-vidually.
Chock for an open in the wire orbulb:1. Turn the ignition sw;tch OFF.2. Connectthe ECM connector terminal 418 to body ground with
3. Turn the ignition switch ON (ll).
Repair open in the wire(slbetween ECM and G101 (located
at thermostat housingl that hadmore than 1.0 V.
ls there less than 1.0 V?
Substitute . known-good ECMand .echeck, lf symptom/indica-tion goes away, replace the origi-nalECM.
- R€pair open in the wiresb€tweon ECM {A18land gaug€
ess€mbly.- Replace the MIL bulb.
ls the MIL on?
Substitute a known-9ood ECMand rech6ck. It symptom/indica-tion goes away, repbce the origi-nal ECM.
ECM CONNECTOR A {32P)
15 16 17 18 19
r 2 3 al 15 Ga910 11
12 ,, t5 16 1tt920/22 23 2a
25 26 211184tt-MILJUMPER(GRN/ORN) I WIRE

\.
\.
Measure Power Supply CircuitVoltage:1. Turn the ignition switch ON (ll).2. Measure the voltage betweenthe A12 and A13 terminals andbetween the A25 and 426 ter
Repeir open or short in tha wirebgtwoon th6 A12 .nd/or A25 tor-minrls and under-dash fu3e/r6layDox.
ls there battery voltage?
Measure O. IND Vohag.:1- Turn the ignition switch OFF.2. Connect the A (26P) connector to the TCIL3. Connect a digital multimeterto the A17 and A13 or 426 ter-minals.4. Turn the ignition switch ON (ll)
and make sure that the voltageis available for 2 seconds.
Check for open or short in thowire betweon the A17 torminaltnd the gauge as3emblv. ll thewire is OK, chock tor a faulty Eliindicator light bulb or a f.ultygauge assgmbly printgd circuitboard.Ch€ck D. IND for an Open Circuitr1. Turn the ignition switch OFF.2. Disconnect the A {26P} con,nector from the TCM.3. Check tor continuity betweenthe A17 terminal and the teFminal of the gauge assemblyconnector (see section 23).
Rap.ir open in tho wire betweenth. A17 tgrminal and the gsugeassembly.
ls there conlinuity?
Check lor loose TCM connectoB.Check the A/T goar positionswitch. lf necessary, substitute eknown-good TCM and.echock.
From page 14-82
TCM CONNECTOR A I26PI
BI-K/YELBRN/BLK
BLK/YELBRN/BLK
wlRE SIDE OF FEMALE TERMINALS
BRN/BLK
GRN/BLKBRN/BLK
14-83

Troubleshooting
ABS lndicator Does Not Come On
\
GAUGE ASSEMBLY 5P CONNECTON
Wire sid€ of female terrninals
Th. A8S indicator light does notcoma on whon ignition swhch islum6d ON llll.
check the METER {7.5 A) tuse inthe under-dash tuse/relay box.and reinstallthe fuse it it is OK.
Replacsthefuse.nd recheck.
Ch.ck th. ABS control unit:Disconnect the ABS control unit12P connector.
Chock for loola ABS contlol unitconnector!. ll noco$rry !ubsti-tut6 a known-good ABS controlunit and r6chock.
Check tor .n opon in the lcl cir-cuit:1. Disconnect the gauge assem-bly 5P connector.2. Turn the ignition switch ON (ll).
3. Measure the voltage botweenthe gaugo assombly 5P con-nector terminal No. 'l andbody ground.. Repair open in tho wir. betwoanthe METER 17.5 A) tuso.ndgaugo a$embly.. R.pl.co tho under-dash furo/.elay box. lopen circuit insidethe box.l
check the A8s indicator bulb inthe gauge assembly.
R6olace tho ABS indicrtor bulb.
Ch.ck tor ! short to body groundin th6 WALP circuit:Check tor continuity b€tween thegauge assembly 5P connectorterminal No. 4 and body ground.
R€pair short to body ground in thowira b€tw6on tho gaug6 asscmblysnd the A&S control unit.
lTo page'19-41)
WALP {BLU/REO}

Troubleshooting
Schematic Symbolsym
BATTEBY
tr3
o-
GROUNDGround terminal Componenr ground
I il
FUSE
COIL, SOLENOID
rhtdl
l9l.|
CIGARETTE LIGHTER
,A
lrl
Y
RESISTOR
+
T
VARIABLE RESISTOR
TD
=rX
ttf
THERMISTOR
/b'
t=l
v
IGNITION SWITCH
1-\-T- l.--
BULB
A
Y
HEATER
-h
t=l
tr
MOTOR
0
PUMP
A
Y
CIRCUIT EREAKER
I
t
Y
HORN
+
DIODE
+
SPEAKER, BUZZER
D
Mast
Y
ANTtiNNA
T,
TRANSISTOR (Tr)
ll
+1^'l
)
Wire Color Codes
The following abbreviations are used to identify wire
colors in the circuit schematics:
WHT ............ White
YE1 .............. Yellow
81K .............. Black
B1U .............. Blue
GRN ............. Green
RED .............. Red
ORN ............. Orange
PNK .............. Pink
BRN .............. Brown
GRY ............. Gray
PUR .............. Purple
LT BLU ......... Light Blue
LT GRN ......... Light Green
The wire insulation has one color or one color with
another color stripe.'The second color is the stripe.
WHT/BLK
,//,aI,//t- /
R
BELAY lln noNormally open relayrmal position)
Normally closed relay
-tr-f,-
l=T= |
til
trf
CONDENSER
I
T
SWITCH {ln nrNormally openswitch
I
/6\
v
I
)rmal position)Normally closed
I
A
w
I
LIGHT EMITTINGDIODE (LEDI
AJ"
YT
CONNE
V
I
CTIONOutput
J,
CONNECTOR
+>-
l-l'l
REED SWITCH
.K
Irr ]
Y

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Charging System
Component Locationlndex
CHARGING SYSTEM LIGHT(ln the gauge assembly)Test, pages 23-102,103Bulb Locations, page 23-122
UNDER-HOOD FUSE/RELAY BOX(USA: HAS bUiIt-iN ELECTRICALLOAD DETECTOR (ELD) UNIT}Troubleshooting of ELD, secrion 11
BATTERYTest,
ALTERNATOR BELTInsp€ction and Adiustment, page 23_115ALTERNATORTroubleshooting, page 23'102Alternator/FegulatorTosl, pages 23-105,'106Replacement, page 107Overhaul, page 23-108
23-99
.t-

Charging System
Troubleshooting
It the charging system light does not come on or does not go off, or the battery is dead or low, test the following items in
the order listed below:
1. Battery
2. Charging system light
3. Voltage
4. Alternator control system
5. Alternator/regulator
Charging System Light Test
ALTERNATOR'P CONNECTORIUSAI
IGIBLK/YEL)
Wire side offemale terminals
Wire side offemale terminals
ALTERNATOR 3PCONNECTOR lCanadal
Charging System Light Check:Make sure the charging systemlight comes on.
Ch€ck tor a blown No. 15 (7.5 A)
tuse and . blown charging sys-
tem light bulb. ll the fuse andbulb are OK, .eptir tho open inlhe WHT/BLU or BLK/YEL wire.
Does the charging systemlight come on?
Ch.rging System Light Check(cont'd):
Start the engine.
Pertorm the Ahernator/RegulstolTest (s€. prge 23-101,Does the charging systemlight go off?
Voltago Check:Measure the voltage at the No. 1
lNo. 2l terminal of the 4P [3P]connector with tho ignition switchoN {lr).
Repair tho open in ih€ 8LK/YELwir6 betweon the alte]nator andundor-dash lure/reley box.
I4
L-*
23-102

I
rIGauge Assembly
BulbLocations
RIGHT TURN SIGNAL INOICATOR LIGHT ('I.4 WI
BRAKE SYSTEM LIGHT I1.4 WI
DOOR-OPEN INDICATOR LIGHT (1.4 WI
*ABS/SRS INOICATOR LIGHT (1.' W)
LOW FUEL INDICATOR I-IGHT I3.4 W)
SEAT BELT REMINDER LIGHT {1.4 WI
HATCH-OPEN INDICATOR LIGHT {1.4 W}: HarchbackTRUNK'OPEN INDICATOR LIcHT (1.4 W): Sedan
+: On the ABS/SRS printed circuit board
LEFT TURN SIGNAL INDICATOR LIGHT (1.4 WI
CHARGING SYSTEM LIGHT {1,4 WI
A/T GEAR POSITION INDICATOR LIGHT (1.'t2 W x 7)
HIGH BEAM INDICATOR LIGHT I1 .4 \A,
LOW ENGINE OIL PRESSUREINDICATOR LIGHT (1.4 W}
MALFUNCTION INDICATOR LAMP(MtLl (1.4 Wl
LIGHTS13.4 W x 3)REMINDER LIGHT I1.4 WI
cRursE LTGHT | 1.4 Wt
23-122

I
Seat Belt Reminder
SystemLow Fuel lndicator
Indicator Light Test
NOTE: Refer to page 23-123 for the wiring description of
the low fuel indicator circuit.
1. Park car on level ground.
@ oo not smoke whilc wolking on the
fuel system. Keep open tlames away from your work
area. Drain fuel only into an approved container.
2. Drain fuel into an approved container. Then install
the drain bolt with a new washer.
3. Add lessthan 8.2 t l2.2U.S.Gal, 1.8 lmp.Gal)of fuel
and turn the ignition switch ON {ll). The low fuel in-
dicator light should come on within lour minutes.
. lf the light does not come on. remove the access
panel and disconnect the 3P connector from the
fuel gauge sending unit. Connect the A (BLV
WHT) terminal to the C (BLU,/WHT) terminal with
a jumper wire.
- lf the Iight comes on, the problem is either the
sending unit or its ground.- lf the light does not come on, the problem is
an open in the BLU/WHT wire to the gauge as-
sembly, no power to the gauge, or a blown
bulb.
a lf the light comes on, add approx.4 ! (1.1
U.S.Gal. O.9 lmp.Gal) of fuel, the light should go
off within four minutes.
I
i
)
SeatSwitchTestBelt
1.Slide the driver's seat to the middle position. then
disconnect the 2P connector from the back of the
seat.
Check tor continuity between the A and B terminals
in each condition according to the table.
NOTE: Refer to page 23-156 for the seat belt
reminder input test,
3. lf necessary, replace the seat belt switch.
Terminal
c""dil----lB
UNBUCKLEDoo
BUCKLED
ANCHOR3P CONNECTOR
23-133

t
{)
)
Based on signals received from the vehicle speed sensor (VSS). the microcomputer in the maintenance reminder unit,which is located behind the dashboard lower cover, computes the distances traveled. When you turn the ignition switchON (ll), the reminder light in the gauge assembly will come on for two seconds (bulb check tunction). At 9,650 1 160km {6,000 1 1O0 miles} intervals, the reminder light will glow for two seconds and then blink ten seconds after you
turn the ignition switch ON (ll). This will repeat every rime you turn the ignition switch ON {ll) until rhe car reaches12,O7O ! 1 60 km (7,500 t 100 miles).
Beyond the 12.o1O ! 160 km (7,5OO t IOO mile) interval, the light will continue to glow after the bulb check untilyou turn the ignition switch otf or reset the unit.
To reset the unit, the car must be parked and the ignition switch must be ON (ll). Press the reset button on the unitfor more than three seconds, and the reminder light will go off.
NOTE:
. Turn the ignition switch OFF before you remove the 5P connector from the maintenance reminder unit, otherwise vouwiil cancel all data in the memory.
a The data will remain in the memory even when the ignition switch is turned off, or if the unit is disconnected. Whenthe ignition switch is turned ON (lll, and the car is driven, additional data will be stored.
{
23-137