reset ACURA INTEGRA 1998 Service User Guide

I
PGM-FI System
Knock Sensor {KSl (B18C1, 818C5 enginesl
The scan tool indicates Diagnostic Trouble Code (DTC) P0325: A problem in the circuit of the Knock Sensor
{KS).
ECM CONNECIOR D I16P)
Wire side of female terminals
- Tho MIL he3 b6en.eportgd on.- DTC P0325 i3 3tor6d,
Probl6m veriticalion:1. Do the ECM Reset Proc€dure.2. Start the engine. Hold theengine at 3,000 rpm with noload {in Park or neutral} untilthe radiator lan comes on,then let it idle.3. Hold the engine at 3,000 -
4,000 rpm for 10 seconds.
Intarmitt.nl failurc, ay3tem i3 OKrt thii timc llest driva mav b.naccrsrryl.Chcck for poor connactions o.loos. wir.. botw..n Cl33 knocks.nlor (KSl rnd EcM.
Ch6ck {or a 3hort in tho wirc IKSlin6l:1. Turn the ignition switch OFF.2. Disconnect the knock sensorconnector,3. Check for continuity betweenECM connector terminals D6and body ground.
R.o.i. short in thG wire batwaanECM lD6l rnd knock..n3or.
Check for an opcn in lho wiro
IKS lin.l:Check for continuity between ECMconnector terminal D6 and knocksensor connector terminal No. 1.
Reprir op.n in tho wira bttw..nECM lD6l and knock ..Nor.
Substitute a known-good knocksensor and recheck.
Raplac6 thc odginrl knock sanror.ls DTC P0325 is indicated?
Substitut6 . known-good ECM.nd rocheck. lf aymptom/indic.-tion 9003 away, .opbcc thc origi-nal ECM.Wire side of female terminals

t@
tFffi6l
F136il
l-P1362l
Fi3BTl
tFE82-l
Crankshaft Position/Top Dead Center/Cylinder Position (CKP/TDC/CYPI Sensor
The scan tool indicates Diagnostic Trouble Code {DTC) P0335: A malfunction in the Crankshaft Position (CKP)
sensor circuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P0336: A range/performance problem in the CrankshaftPosition (CKP) sensor circuit.
The scan tool indicates Djagnostic Trouble Code (DTC) Pl361: Intermittent interruption in the Top Dead Center(TDC) sensor circuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P1362: No signal in the Top Dead Center (TDC) sensorcircuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P1381: Intermittent interruption in the Cylinder Position(CYP) sensor circuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P]382: No signal in the Cylinder Position (CYP) sensorcircuit.
D€scription
The CKP Sensor determines timing for fuel injection and ignition of each cylinder and also detects engine speed. The TDCSensor determines ignition timing at stan-up (cranking) and when crank angle is abnormal. The Cyp Sensor detects theposition of No. 1 cylinder for sequential fuel injection to each cylinder.
NOTE: ll DTC P1359 is stored at the same time as DTC P0335, P0336, Pl361, P1362, P1381 and/or P1382. troubleshoot DTCP1359 first, then troubleshoot those DTCS.
Problcm va.itic.lion:'1. Do the ECM Reset Procedure.2. Stan the engine.
- Th. MIL ha3 bacn r.oort.d on.- olc P0335, P0336, P1361.P1362, P1381 and/o. P1382 erottorad.
Intormittcnt tailurc, rystem is OKat this lima. Checl tor poor con-naclions or loose wire3 at C109{CKP/lDC/CYP Scn30rl rnd €CM.
ls DTC P0335, P0336, P1361, P1362.P1381 and/or P'l382 indicared?
Chcck for .n open in thc TDC/CYP ,.n3or:L Turn the ignition switch OFF.2. Disconnect the CKP/TDC/CYP
3, Measure aesistance betweenthe terminals oI the indicatedsensor {see table).
Rcplaca tho distributor hou3ingscnsor {soa soction 231,ls rhere 0.5 - 1.0 kO?
TOC P (GRN}
Termanal side of male terminals
CYP P {YELI
CYPM IBLK)
SENSOnoTcSENSORTEEMINALECMTEflMINALCOLOR
CKPP0335c2BLU
P0336c12BLU/YEL {WHTI
TDCP13613G8N
P13627c13WHT/8LU {BEO)
CYPP13814c4YEI
P1382ac14WHT (BLK)
I ): ENGINE WIRE HARNESS SIDE
(To page 11-84)
-83

- Thg MIL has been reportod on.- OTC Pl107 or P1108 b stor6d.
Problgm v6riticrtion:1. Do the ECM Reset Procedure.2. Turn the ignition switch ON (ll).
Substitut6 a known-good ECMand rcchack. lt lymptom/indic.-lion go.s away, replrco lha origi-n.lECM.
ls DTC Pl108 indicated?
Intermitt.nt failurc, sy3lem i. OKat this time.ls DTC P1107 indicared?
Ch.ck for e short in th6 wire(8ARO OUT line)l1. Turn the ignition switch OFF.2. Disconnect the ECM connec-tor C 131P).3. DisconnBct the 22P connectorlrom the TCM.4. Chechtor continuity betweenbody ground and ECM con'nsctorterminalC2l.
Repair shon in tha wira bctwesnECM lC21) .nd TCM.
ls OTC Pl107 indicated?
Substitutc s known-good ECMtnd rochcck. lf symptom/indica-tion 9063 aw.y, replsco tho origi-n.l ECM.
1P1108 | The scan tool indicates Diagnostic Trouble Code (DTC) P1108: A high voltage problem in the Baro sensorcircuit.
(A/T only)
ECM CONNECTOR C (31P}
Wire side of temale terminals
P1107 | The scan tool indicates Diagnostic Troubte Code (DTCI P1107: A low voltage problem in the Baro sensor circuit.
11-87
. a,_
2aEt0
1lt31517l819 ./2l
EARO OUTI{Lr GRN) 6

PGM-FI System
Electrical Load Detector (ELDI (USAI
The scan tool indicates Diagnostic Trouble Code (DTC) P1297: A low voltage problem in the Electrical Load
Detector (ELD) circuit.
ELD 3P CONNECTOR {C218)
Wire side of female termin€ls
Problem verification:1- Do the ECM Reset Procedure.2. Stan the engine.3. Turn on headlights.
Int€rmittont failure. swtom b OKat this time. Check tor poor con-neqtions or loose wi.es at C218IELDI and ECM-
ls DTC P1297 indicated?
Check for ao open in the wire
{lG1 linel:1. Turn the ignition and head-lights OFF.2. Disconnect the ELD 3P con-nector,3. Turn the ignition switch ON (ll).
4. Measure voltage betlveen bodyground and the ELD 3P connector te.minal No.'1.
Repair op6n in the wire baiwe€nNo. 15 ALTERNATOR SP SENSOR17.5 Al fus€ in the under-dashluse/relay box and ELD.
Chock lor short in the wire {ELline,:Measure voltage between bodyground and the ELD 3P connectorterminal No.3.
ls there approx. 5 Vl
Check for a short in the wire (EL
linel:1. Turn the ignition switch OFF.2. Disconnect the ECM connectorD (16P).
3. Check for continuity betweenbody ground and ECM con-nector terminal D16.
Sooair short in the wire betweenECM (D161 and ELD.
Substitut€ a known-9ood ECMand recheck. It symptom/indica-tion goes away, r€place the origi-nal ECM.
EL{GRN/REDI
ECM CONNECTOR D {16PI
Wire side oI Iemale tarminals
11-88

The scan tool indicates Diagnostic Trouble Code (DTC) P1298: A high voltage problem in the Electrical Load
Detector (ELD) circuit.
ELD 3P CONNECTOR {C218}
_rJ ,112 3l-f-dnD
Wire side of female terminals
ECM CONNECTORS
{BLKI
Wire side of female termin6ls
EL {GRN/REDI
ECM CONNECTOR D (16PI
P.oblem verification:l Do the ECM Reset Procedure.2. Start the engine.3. Turn on headlights.
lntermittent failure, 3vstem is OKel ihis time. Chock for ooor con-nections or loose wiros at C218(EtD) and ECM.
ls DTC P1298 indicated?
Check lor an open in the wire(GNO linel:1. Turn the ignition switch andheadlights OFF.2. Disconnect the ELD 3P con-nector.3. Check for continuity betweenbody ground and the ELD 3Pconnector terminal No. 2.
Bepair opon in the wire bstweenELO connector and G402.
Check tor an opon in the wire IELlinell1. Disconnect the ECM connec-tor D (l6Pi.
2. Check for continuity betweenthe ELD 3P connector terminalNo. 3 and ECM connector terminal D16.
Repair open in the wir€ betweenECM l016l and rhe ELD.ls there continuity?
Check for a malfunction in theELD:1. Reconnect the ELD 3P connec-tor and ECM connector D (16P).
2. Start the engine and allow itto idle.3. Wh ile measuring voltagebetween ECM connector terminals D16 and A9, turn theheadlights on {low).
Sub3titute a knownjgood ECMand rechock. lf 3vmptom/indics-tion 9oe6 away, replace the original ECM.
A l32PtIBRN/BI-KI
Wire side of female ierminals
1 1-89

PGM-FI System
Crankshaft Speed Fluctuation {CKF) Sensor
lT13a6l Tje scan tool indicates Diagnostic Trouble Code (DTC) P'1336: lntermittent interruption in the Crankshaft Speed: Fluctuation {CKF) sensor orcurt.
The scan tool indicates Diagnostic Trouble Code (DTC) P1337: No signal in the Craqkshatt Speed Fluctuation (CKF)
sensor circuit.
DescriDtion
The diagnostic system has a pulser rotor on the crankshaft and a pulse pick-up sensor on the engine block. The ECM mon-
itors the crankshaft speed tluctuation based on the CKF sensor signal, and judges that an engine misfire occurred it the
lluctuation goes beyond a predetermined limit.
CKF SENSOR CONNECTOR IC 110)
T:lr+T
IJI',Icrr e -f-fcxr na
{BLU/RED} (D lwHr/REDI
Terminal side of male termanals
- The MIL has beon.ooorted on.- DTC P1336 and/or P1337 arostoaed.
Problem vo.itication:1. Do the ECM Reset Proced!re.2. Start the engine.
lntermittent feilure, swtem is OKat ihis timo. Chcck for ooor oon-noctions or loose wir* ei C110(CKF sonsor) and ECM.
Check for an open in tho CKF sen-sor:1. Turn the ignition switch OFF.2, Disconnect the CKF sensor con-
3. Measu re the resistancebetween the CKF sensor 2Pconnector terminals No. 1 andNo.2.
ls there 1.6 - 3.2 kO?
Check lor . short in tho CKF sen-30t:Check for continuity betweenbody ground and the CKF sensor2P connector terminals No. 1 andNo.2 individually.
ls there continuity?
(To page 11-91)
1 1-90
T:]lf -rl11 2|
TTcKF P /6 6 CKF M
relul Y\Z twxvneotneot ,-- | L

nsnan upeeo rlucruauon lunF, Densor lconr q,
The scan tool indicates Diagnostic Trouble Code (DTC) P1359: A problem in the Crankshaft Position,Top Dead
Cenler/Cylinder Position (cKP/TDC/CYP) sensor circuit.tPr3ssl
The MIL has been reported on.DTC P1359 is stored.
Problem verilication:1. Do the ECM Reset Procedure.2. Turn the ignition switch to theSTART {lll) positaon for 10 sec'
NOTE:. M/T: Clutch pedal must be
. A/T: Transmission in E or E
Intermittent failure, svstem isOK. Check for ooor connactionsor loos€ wi.es at C109 {CKP/TDC/CYP sensorl and ECM.
ls DTC P1359 indicated?
Check for poor connections orloose wires between the CKP/TDC/CYP sensor and the ECM.
Substitute a known-good ECMand recheck. It symptom/indica-tion goes away, replace ih6 origi-nal ECM.
PGM-FI System
Crankshaft Speed Fluctuatio(CKFI Sensor (cont'd)
ECM lnternal Circuit
\
L
I P1607 Tfre scan tool indicates Diagnostic Trouble Code (DTC) Pl607: An ECM Internal Circuit Failure A.
The MIL has been reported on.DTC P16O7 is stored.
Problem verification:1. Do the ECM Reset Procedure.2. Start the engine.3. Allow it to idle {or 5 seconds.
Inte.miftent failure, systom L OKst this iimo.ls DTC P1607 indicated?
Substitute a known-good ECMand .echeck. lf symptom/indica-tion goes away, replace the origi-nalECM.
-92

J
a
I
lF1660l Th"""untool indicates Diag nostic Trou ble code (DTC) P1660:Aproblem in theA./rf Fl data line.
Wire side of temale terminals
(conr'd)
ECM CONNECTOR C I31P}
ATCHK{BLUI
1 2 3 1l 15 6 710
11 t2 131r t5 16 1? t8'tg /21
././I l/nzex)
TCM CONNECTOR 26P (C,r2ol
7 r-T7 s 6 ;i-g-io-rrJzlil
15 16 17 / /.20 22 23 21 25 26
ATCHK IBLU)
o
ECM CONNECTOR C {31PI
Th6 MIL has been reported on.DTC P16GO is stored.
Problem verificationl1. Oo the ECM Reset Procedure.2. Turn the ignition switch OFF.3. Start the engane. Allow theengine at idle for one minute,
lntermittent failure, swtem is OKat lhis time. Check lor poor con-n€ctions or loose wires at C420ITCMI and ECM.
ls DTC P1660 indicated?
Check for an open in the wire
{ATCHK line}:1. Turn the ignition switch OFF.2. Check for continuity betweenECM connecto. terminal C19and TCM 26P connector terminal No.20.
Repair open in the wire betweenECM (Cl9) and TCM.ls there continuity?
Check tor a short in the wire{ATCHK line):1. Disconnect the ECM conoec'tor C (31P).
2- Disconnect the 26P connectorfrom the TCM.3. Check for continuity betweenbody ground and EcM connector terminal Cl9-
Repair short in the wire betweenECM lC19) and TcM.
(To page 11-94)
11-93

JP1681 | The scan tool indicates Diagnostic Trouble Code (DTC) P1681: A low voltage problem in the A/T Fl signal A
circuit.
P1682 | The scan tool indicates Diagnostic Trouble Code {DTC) Pl682: A high voltage problem in the A//T Fl signal A
circuit.
]TtOgOl fh" scan tool indicates Diagnostic Trouble Code (DTC) P1686: A low voltage problem in the A"/T Fl signal B
ctrcutt.
lFt Ogt-l fh" scan tool indicates Diagnostic Trouble Code (DTC) P1687: A high voltage problem in the A"/T Fl signal B
crrcurt.
ECM CONNECTOR C {31PI
IGRN/BLU)
Wire side of female terminals
TCM CONNECTOR {22P) {C419}Wire side of female terminals
2!a5't0
tl1213 tatat6It1a19 ,/
AFSB I I AFSA
{GRYI T- _IIGRN
@)o
2311to21 ;'15 15 17 13 13
E./ zl za
G-\
AFSIGR
\-
a
AFlGl
I
sBl
L]
r@!I AFSA
| {GRN/lRt ltl
iFSGRIA[/BLUt
12 3 a 5 6 7 89
tz /'tt //t't /ts zo
to ,/
DTC P1681, P1682, P1686 end/or P'1687 are stored.
Problem verificetion:1. Do the ECM Reset Procedure.2. orive the car for several milesso that the transmissionupshifts and downshifts severarlrmes.
Intormittent lailure. system is OKat thi3 tim€. Check tor ooo. con-nections or loo3o wir6s al C419{TCM} .nd ECM.
ls DTC P1681, P1682, Pl686and/or P1687 indicated?
Check tor a short in th6 wires{AFSA, AFSB linel:1. Turn the ignition switch OFF.2, Disconnect the 22P connectorfrom the TCM.3. Disconnect the ECM conn6c-tor C (31P).
4. Check for continuity betweenbody ground and ECM con-nector terminal C28 (C27)*.
Rcoair 3hort in tho wiros betweenECM lC28 or C27*l rnd TCM.ls there continuity?
Check fo. an open in the wiresIAFSA, AFSB lines):Check for continuity between ECMconnector terminal C28 (C27)* andTCM 22P connector terminal No. 7(No.6i*.
Repai. opsn in the wiros bdtweenECM lC28 or C27'l and TCM.
Subsiiiutg a known-good ECMend r6ch€ck. lf 3ymptom/indica-tion goes away, repl.c6 the origi-nal ECM.
":DTC P1686 or Pl687 (NT Fl sisnal 8l
1 1-95

ldle Speed Setting
IDLEADJUSTINGSCREW
7.
6.Turn the ignition switch OFF.
Reconnect the 2P connectors to the IAC valve and
the EVAP purge control solenoid valve, then do the
ECM reset procedures.
Restart and idle the engine with no-load conditions
for one minute, then check the idle speed.
NOTE: (Canada) Pullthe parking brake lever up.
Start the engine, then check that the headlights are off.
ldle speed should be;
Bl88l €ngine:
Mfi750 i 50 rpm
A/T750150 rpm (in Park or neutral)
818C1 engine:750 i 50 rpm
818C5 engine: 800 i 50 rpm
NOTE: 81881, Bl8Cl engines - It the idle speed
increases to *1rpm, this means the EVAP system ispurging the canister. To stop the purging termporarily.
raise the engine speed above 1,000 rpm with the
accelerator pedal, then slowly release the pedal.
*1: 81881 engine
M/T: 820 i 50 rpm
Ay'T: 840 t 50 rpm
818Cl engine
850 I 50 rpm
(cont'd)
Inspection/Adiustmont
NOTE:
. When setting the idle speed, checkthe following items:- The MIL has not been reported on.- lgnition timing
Spark plugs- Air cleaner- PCV system
. (Canada) Pull the parking brake lever up. Start the
engine, then check that the headlights are off.
1. Start the engine. Hold the engine at 3,000 rpm with
no load (in Park or neutral) until the radiator fan
comes on, then let it idle,
Connect a tachometer.
Disconnect the 2P connectors from the ldle Air
Control (lAC) valve and the EVAP purge control
solenoid valve.
2.
5.
if the engine stalls, restan the engine with the accel
erator pedal slightly depressed. Stabilize the rpm at
1,000, then slowly release the pedal until the engine
idles.
Check idling in no-load conditions: headlights, blower
fan, rear defogger, radiator fan, and air conditioner
are not ope€tlng.
ldlo speed should be;
B188l engine:
Mlf480 :l 50 rpm
A/T480 i 50 rpm (in Park or neutral)
B18C1 engine: /t80 t 50 rpm
818C5 sngine:550 t 50 rpm
lf necessary, adjust the idle speed, by turning theidle adjusting screw.
After adjusting the idle speed, recheck the ignition
timing {see section 23). lf it is out of spec, go back
to steo 4.