1994 HONDA INTEGRA service reset

PGM-FI System
rj-t
--t-.
Fuel Supply System
-+-lt@t- -t 13 |- ' "- - --i--
T,-n The Maltunction Indicator Lamp (MlL) indicares Diagnostic Trouble Code (DTC) 43: A problem in
- L:!-i - the Heated Oxygen Sensor (HO2S) circuit. or a probtem in the Fuel Supply System.
NOTE:. Use DIGITAL MULTIMETER.. U6e 2 Volt rang6.
o oooooo oooooo I oo oooooooooooooooooooQoo ooo ooooo I oooo ooooooooooooooo
426
JUMPER WIRE
o ooooo oooo ooo I oo oooooo Isdtcllodsl ooo ooooooooo oooo ooo oo ooo I oooo ooooooooooooooo
D14 {+l
I
426 t-l vohrgo rhould rl.n.t
| 0.4-0.5 V wh.n th..- ignirioo .wilch i! firdt|rtrod o.r, Itd docr!6ato b.low O.1 V in L..th6n two minutaa.
- Tho MIL h.s boen reportod on.- With rhe SCS short con-noctor connocted (soo paga1l-34), codo 43 b indlcat.d,
From codr I troebl.-lhoorlng lprgo 1146).
ls the code 43 accompanied bythe MIL and poor driveability?Go to Fuol Supply .y.t.m (|ecpag6 1t-971.
Do the ECM Reset ftocedure lseepage 11-35).
Connect the SCS short connectorto the service check connector{see page 'l1-34).
Start the engine. Hold the engineat 3,00O rDm with no load {A/T in
@or@ position, M/T in neutral)until the radiator Ian comes on,then let it idle for at least onemanute,
Intonnitl.nt t llure, tydom lr OKat thi. tim. lto.t drlv. mly b.nocaararyr.Chock lor poo? connactlona otloots wiro at C223 lloc.t.d atrlghl lhock towo.]. Cl13lHO2Sland ECM,
Raise the engine speed to 3,000rpm and hold that throttle positiontor at least one minute.Do not vary the throttle positioneven if the rpm drops.
Ooes the MIL blink and does itindicate code 43?
Turn the ignition swilch OFF.
Connect the test harness betweenthe ECM and conneclors {seepage 1 1-371.
With the ignition switch OFF, waitfor at least two minutes.
lnstall a jumper wire on the testharness between A6 and A26.
11-50
1To page 1 1-5'l l

Troubleshooting Procedures
when the TcM senses an abnormality in the input or output systems. the E]indicator light in the gaugo assembly willblink.
when the service check Connector {located under the dash on the passenger side} is connected with the specaat toolas shown, the E] indicator light will blink the Diagnostic Trouble iode {DTCI when the ignition switch is turned on.
When the lDil indicator light has been reported on, connect the service check connector with the special tool.Then turn on the ignition switch and observe the @ indicator light.
GAUGE ASSEMSLY
)'t
DAI'A LI]TKcor{r{EcToR (3P)NOTE:Do not atlachjumpe. wire.
Sc. DTCI
So. DTC2
S.. DTC14
scs sHoRT CO[{]{ECTORoTPAZ-OOl0too
codes 1 through I are indicated by individual short blinks, codes 1o through 1 5 are indicated by a series of tong andshon blinks. one long blink equals l0 short blinks. Add the long and short blinks together to dete;mins the cod€. Aft6rdetermining the code, refer to the erectricar system symptom-to-component chart on pages 14-5o and 51.
ahon
f"l
some PGM-FI problems will also make the @ indicator light come on. After repairing the pGM-Fr system, disconnectthe BACK UP tuse (7.5 Al in the under-hood fuse/relay box tor more than 1o seconds to reset the TcM memorv.
NOTE:
a PGM-FI svstem
The PGM-FI system on this model is a sequential multipon fuel iniection svstem.' Disconnecting the BACK UP tuse also cancels the radio anti-theft code, preset stations and the clock setting. G6tthe customer's code numbe. and make note of the radio presets befote temoving the fuse so you can reset them.
14-48

CAUTIOI{:
a All SRS eloctdcal wiring harna$os are covcred whh
yollow lnaulation.
a Sofora disconnecting any pan ot tho SRS wirc har'
n6ss, connoct the short connoctots (s€6 pago 23-701.
a Roplacs tho entiro aff.ct d SRS ham6t. rssombly it
ii has an opon circuil or damagcd wlrlng.
lf the inspection to. a particular lailure code requir6s the
use of Test Harness {07LAJ - PT3O1 OA):
1, Remove the left side kick panel on the driver's side(see page 1+84).
2. Connect the wire harness to the Tsst Harness.
and/or connect the Test Harness to the TCM sccord-
ing to the troubleshooting flowchart.
NOTE:
a Only the A and D terminals of the Test Harnsss aro
used for Ay'T troubleshooting.
a Unless otherwise noted, use only the Digital
Multimeter, commerciallv available or KS-AHM-
32{)03, for testing.
c
DIG]TAL MULTIMETERComm€rciallv availableKS-AH M-32-.003,or gouivalEnt
) o o o o o o o o o o ) olo D o o o o o qoo o o o olo o o o o . o o o . c
To.miml Locrtlonr
a TCM Ro3at Procoduro
1 . Tum the ignition switch off.
2. Remove the No. 32 BACK UP fuse {7.5 A} from the
under-hood luse/relay box 'or 10 seconds to reset
the TCM.
NOTE; Disconnocting the No. 32 BACK UP tuse also
cancels ths radio anti-theft code, preset stations and
tho clock sefting. Get the customer's code number
and make note ol the radio presets before removing
the fuss so you can reset them.
a Finll hoc.dulr
NOTE: This procedure must be done after any
troubleshooting.
1 . Removs ths s9ocialtool from the Service Check Con-
noctor.
2. Reset the TCM.
3, S6t th€ radio preset stations and clock setting.
BACK UP (7.5 A} FUSE
14-49

Number of @indicator light
blinks while
Service Check
Connector is
connected with
the special tool.
@ indicator
lightPossible CauseSymptomRefer to
page
'loBlinksDisconnected engine coolant tempera-
rure (ECT) sensor connector
Short or open in ECT sensor wire
Faulty ECT sensor
Lock-up clutch does not
engage.14-68
1lOFFDisconnected ignition coil connector
Short or open in ignition coil wire
Faulty ignition coil
. Lock-up clutch does not
engage.'t 4-7 0
13Blinks. Shon or open in LT GRN wire between
the D3 terminal and ECM. Faulty barometric pressure {BARO)
sensor
NOTE: The BARO sensor is built into
the ECM
. No specific symptom
appears.
14-7 1
14Blinks. Short of open in FAS {YEL} wire be-
tween the D16 terminal and ECM. Faulty ECM
. Transmission jerks hard
when shitting.
't5OFFDisconnected mainshaft speed sensor
connecror
Short or open in mainshaft speed sen-
sor wire
Faulty mainshaft speed sensor
. Transmission jerks hard
when shifting.
14-75
SymptomProbable CauseRet.page
LQ! indicator light is on steady, not blinking whenever the ignition is on.14-77
[Q3] indicator light does not come on for 2 seconds after ignition is first
turned on.14-78
Lock-up clutch does not have duty operation (ON-OFFI.Check A/C signal with
A/C on.14-80Lock-up clutch does not engage.
Shitt leve. cannot be moved lrom @ position with the brake pedal
depressed.Check brake switch signal,14-41
It the self-diagnosis LQ4 indicator light does not blink, perform an inspection according to the table below.
a lf a customer describes the symptoms for codes 3, (yet the LQ! indicator light is not blinkingl, 6, 1 1 or 15, it will
be necessa.y to recreate the symptom by test driving. and then checking the @ indicator light with the ignition still
oN.
e lt ttre @ indicator light displays codes olher than those listed above or stays lit continuously, the TCM is faulty.. Sometimes the Lqd indicator light and the Malfunction Indicator Lamp (MlL)/Check Engine light may come on simul-taneously. lf so, check the PGM-Fl system according to the numbe. of blinks on the MIL/Check Engine light. thenreset the memory by removing the BACK UP fuse in the unde.-hood fuse/relay box for more than 1O seconds. Drive
the vehicle for several minutes at speed over 30 mph (5O km/h), then recheck the MIL/Check Engine light.
NOTE:
. PGM-FI system
The PGM-Fl system on this model is a sequential multiport fuel injection system.a Disconnecting the BACK UP luse also cancels the radio anti-theft code. preset stations and the clock setting. Get
the fuse so vou can reset them.the customer's code number and make note ot the radio
14-51