sub ACURA INTEGRA 1998 Service Owner's Manual

PGM.FI
Misfire
System
Detected in One Cylinder (cont'd)
)
Troubleshooting Flowchart
ff
i
)
NOTE:.lf there is no freeze data of misliring,just clear the DTC.'lf there is no freeze data of misfiring,test drives under various conditions
The MIL has b6€n reported on.DTC P0301, P0302, P0303 0rP0304 is indicated.
Check the fuel iniector function:Stan the engine, and listen for aclicking sound at the fuel injectorin the problem cylinder.
Check for an open or shon in theharness between ECM and thefUel injector.
Repair open or short in the wiro.
- Replace tho luel inisctor.- Sub3titute a known-goodECM and rach€ck. It symptom/indicrtion 90e3 away, replacethe original ECM.
Problem ve.ification:1. After checking the freeze data,do the ECM Reset Procedure.2. Exchange the spark plug fromthe problem cylinder with oneof another cylinder.3. Connect the SCS service connector.4. Test-drive the car several timesin the range of the treeze data.
(To page 11-81)

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

PGM-FI System
Crankshaft Position/Top Dead Center/Cylinder Position
Sensor (cont'd)
(CKP/TDC/CYP)
CKP/TDC/CYP SENSOR
ooNNECTOR (Cl091
NO
il
,ll
I
Check for an open in the wires
{CKP/TDC/CYP lines):1. Reconnect the CKP/TDC/CYPsensor connector,2. Disconnect the ECM connec-
tor C (31P).
3. Measure resrstance between
the terminals of the indicatedsensor on the ECM connector(see table).
Terminal side of male termrnals
ECM CONNECTOR C {31P}
TDC M IWHT/BLU}
Wire side of female terminals
i
ii!\
(From page 11 83)
Check tor a shott in the CKP/
TDC/CYP s6nsor:Check for continuity to bodyground on both terminals oI the
indicated sensor individuallY.
ReDlace lhe distributor housing,
sen3or {see section 23}.
Reoair open in lhe indicated sen'
sor wires {see lable).ls there 0.5 1.0 kg?
Check lor a short in the wire3
{CKP/TDC/CYP linesl:Check for continuity betweenbody ground and ECM connectorterminals C2, C3 and/or C4 individ-
ually.
Reoaii shon in tho indicated son-
3or wires {s€6 table}.ls there continuity?
Substitute a known-good ECM
and recheck. lf symptom/indica-tion go€s away, repl.ce the origi-nslECM.
TDC P {GRNI
TDC P (GRN)
1 2 r .l le 6 7
TDC P {GRN)
1 2 3 al 15 6 ,
12 13 14 t5 16 It 13
11-84

The scan tool indicates Diagnostic Trouble Code (DTC) P0500r A low voltage problem in the Vehicle Speed
Sensor (VSS) circuit.
Intermittent failure, system is OKat this time. Check for ooor con-neciions or loose wires at C112IVSSI and ECM.
ECM CONNECTORS
A (32P)
LGlIBRN/8LK)
c (31Pt
vss{ORN)
Wire side of female terminals
The MIL has been reported on.DTC P0500 is stored.
Probleft veritication:1. Test drive the car.2. Check the vehicle speed withthe scan tool,
ls the correct speed indicated?
Check lor an open in the ECM:1. Turn the ignition switch OFF.2. Block the rear wheels and setthe parking brake.3. Jack up the front of the car andsuppon it with safety stands.4. Turn the ignition switch ON (ll).
5. Block the right front wheeland slowly rotate the left front
6. Measure voltage betweenECM connector terminals C18and A9.
Substitute a known-good ECMand recheck. H symptom/indica-tion goes away, replace tho origi-nalECM.
Does the voltage pulse 0 Vand 5 V or battery voltage?
Check lor a shori in th€ ECM:1. Turn the ignition switch OFF.2. Disconnect the ECM connector C (31P).
3. Turn the ignition switch ON (lli.4. Block the right front wheeland slowly rotate the left front
5. Measure voltage between ECMconnector lerminals C18 andA9.
Substitute a known-good ECMand lecheck. lf symptom/indica-tion goos away. rsplaco the origi-nalECM.
Does the vohage pulse 0 Vand 5 V or battery voltage?
Repair short in the wireb€tween ECM {C18} end VSS,TCM, or cruise control unit.Repeir open in the wirebetween ECM (C18) aod VSS.ff wire is OK, replace the VSS.
ra 17 18 19 20t6 ]t 13r19
LG1{BRN/BLKIvss(ORNI
23563910 1156
12i5r92022 23 2a11 1213 1/tr6ts/zt
25262Aa9,/2724," ,/ ,,:
1 1-85

PGM-FI System
Barometric Pressure {BARO) Sensor
rrt*l ;:"""::::[Ti5li"$::::#nostic
rroubre code (Drc) P1106: A ranse/performance p'oblem in the Barometric\
,xl
lu,
i-
- The MIL h.3 bean roportad on.- DTC Pl106 i3 3tolod.
Problom Ye.ification:1. Dotho ECM resot procedure.
2. Start the engine. Hold the
ongine at 3,000 rpm with no
load (in Park or neutral) until
the mdiator lan comes on, thenlet h idle.3. Connect the SCS service con-
nector,4. Test-drive with the A,/T in E]position (M/T in 4th goar).
5. Accolerate for five seconds
using wide open throttle.
Int imitt.nt f.llur., .y!t.m ir OKrt thi. tim..ls DTC P1106 indicated?
Substltuto r known-good EGM
and rech.ck. tf rymptom/indic..lion gooa rway, raplaca thc origi_n.l ECM.
11-86
\.

- 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

Ch.ck tor an open in tho wiras{CKF lino3l:1. Reconnect the CKF sensorconnector.2. Disconnoct lhe ECM connec'tor C {31P).3. Measure resistance betweenECM connector terminals C1and C']1.
Rsprir open in thc wiro bctw6cnECM lC1, Cllland thc CKF !.nsor.ls there 1.6- 3.2 kO?
Check fo. a aho.t in tho wi.o!(CKF lines):Check for continuity betweenbody ground and ECM connectorterminal C1 and C11 individually.
Rapair ihort in the wire betweenECM {C1, C11) lnd th. CKF sensor.ls there continuity?
Sub3titute a known.good ECMsnd recheck. lt 3ymptom/indicr-tion gogr away, replaco the origi-nal ECM.
ECM CONNECTOB C (12PI
CKF P
CKF M(wHT/REDI
Wire side of female terminals
BLU/RED}
o\Y
I35I
1tt5t0t921
272aE
(cont'd)
1 1-91

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