1998 ACURA INTEGRA sensor

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

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

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

PGM-FI System
A/T Fl Data Line (cont'dl
(From page '11-93)
Check fo. an ooen or rhort in thewires llGl, LG lines):Measure voltage between TCM 26Pconnector terfiinals No. 12 and 13and terminals No. 25 aod 26.
- Ropair opan or short in thewire bgtwoen TCM and No. 15ALTERNATOR SP SENSOR17.5 Al tu3e in th€ under-dashfu3e/r€lay box.- Repair opon in tho wireb.twoen TCM and G101.
ls there banery voltage?
Check to. an open o. 3hort in thaTCM:Substitute a known-good TCMand recheck.
ls DTC P1660 indicated?
Substitute a known.good ECMand rschsck. lf symptom/indica-lion 9o€! .w.y, roplace tho origi-nal ECM.
TCM CONNECTOR 26P {Cir2ol
LG(BRN/
BLK}
1 2 3 ,/ 5 6 7 E 910 11
14 15 16 17
Wir6 side of lemale terminals
i
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ldle Control System
System Description
The idle speed of the engine is controlled by the ldle Air Control (lAC) V8lve.
The valve changes the amount of air bypassing into the intake manifold in response to electric current controlled by the
ECM. When the IAC Valve is activated. the valve opens to maintain the proper idle speed.
81881 engine {B18Cl, B18C5 engines are similarl:
YELI - F.om PGM'FIBLK - MAIN RELAY
VARIOUS SENSORS
L
1 1-96