1998 HONDA INTEGRA ground

Secondary Heated Oxygen Sensor (HO2S) {sensor 2l
The scan tool indicates Diagnostic Trouble Code (DTC) P0137: A low voltage problem in the SecondaryHeated Oxygen Sensor (H02S) (Sensor 2) circuit.
(cont'd)
The MIL ha3 been reDorted on.DTC P0137 is storod.
Problem veritication:1. Do the ECM Reset Procedure.2. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator fan comes on,3. Check the Secondary H02S(Sensor 2) output voltage at3,000 rpm with the scan 1ool.
Inte.mittent failure, system is OKat lhb time. Ch6ck Ior ooor con-nections or loose wires at C451lSeconddry HO2S {Sensor 2)l andECM.
Does the voltage stay at 0.3 Vor less?
Check for a short in th€ HO2S:1. Turn the ignition switch OFF.2. Discon nect the SecondaryHO2S (Sensor 2) connector.3. Start the engine.4. Check the Secondary H02S(Sensor 2) output whh the scantool.
Does the voltage stay at 0.3 Vor less?
Check tor a short in the wire{SHO2S line):r. I urn rne rgnt on swttch uFF,2. Disconnect the ECM connec,tor D 116P).3. Check for continuity betweenNo. '1 terminal on the Secon-dary HO2S {Sensor 2) connector and body ground.
Ropair short in tho wira bctweenECM (D14) and Secondrry HO2S{Senso.2).
ls there continuity?
Substitute a known-good ECMand recheck. It symptom/indice-taon goes away, replace the origi-nel ECM.
SECONDARYHO2S (Sensor 2l CONNECTOR C451
sHo2sIBLU/REDI f- --
T-l 1 2ltr11(Or ls rl
L
Wire side oI fernale terminals
11-71

PGM-FI System
Heated Oxygen Sensor (HO2S) Heater
The scan tool indicates Diagnostic Trouble code (DTC) P0135: A problem in the Primary Heated oxygen
Sensor lHO2S) (Sensor 'l) Heater circuit
The scan tool indicates Diagnostic Trouble Code (DTC)P0141: A problem in the Secondary Heated Oxygen
Sensor {HO25) {Sensor 2) Heater circuit
Fo13sl
lFol4il
PRIMARY Ho2S (sen3or 1) CONNECToR C113,
SECONDARY HO2S (sensor 2l CONNECTOR Cil51'
Terminal side of male terminals
PRIMARY HO2S (SonSor 1l CONNECTOR Cl13,
SECONDARY HO2S lsan3or 2) CONNECTOR C451r
o2sHTC(BLK/WHT,
GRN/REO'}
IGP{YEL/BLK}lGlr(BLK/YEL)
(To page 11-75)*: P0141
- The MIL has been rePorted on- DTC P0135 and/or P0141 ate
stored.
Probl€m verilication:1. Do the ECM Reset Procedure
2. Start the engine.
lnt€rmitlent failure. 3vslem is OK
at this time. Check for Poo. con'
noction3 o. loose wire ai Cl13(Primary HO2S (S.nsor 1ll. gl51
lSocondary H02S lSensor 2))'
and ECM.
Check for an open or short in tho
HO2S:1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor 1) Secondary HO2S
{Sensor 2)'connector,3. At the HO2S side measureresistance between the 4P con-nector No. 3 and No. 4 terminals on the HO2S side.
ls there 10 - 40 0?
Check Ior continuity betweenbody ground and the HO2S 4P
connector lerminals No. 3 andNo.4 individually.
ls there continuity?
Ch€ck for an open or short in thewir63 (lGP, lG1*, O2SHTC lines):1. Turn the ignition switch ON (ll).
2. Measure voltage between No.3 terminal and No. 4 terminalon the harness side of the 4P
ls there batlery vohage?
{1o page 1l-75)Wire side of female terminals

(From page 11-74)
Check tor an op6n in the wire{lGP, lGl* linel:Measure voltage between No. 3terminal and body ground.
Repair open in the wirebetween PGM-Fl mein relayand Pii.nary HO2S {Sonsor 11.Repair open in the wirebetween No. 15 ALTERNATORSP SENSOR 17.5 A) tuse in theund€r-d.sh fuse/rolav box andSecondary HO2S (S€n3or 21.
ls there battery vohage?
Check for an opon in the wh$:1. Turn the ignition switch OFF.2. Reconnect the HO2S connec-tor.3- Disconnect the ECM connectorA (32P).
4. Turn the ignition switch ON 1fl).5. Measure voltage between theECM connector terminals 46or A5* and A10.
Repair open in tha wire betw.enECM {A6 or A5rl and HO2S.ls there 0.1 V or less?
Substitute a known-good ECMand r.chcck. tf 3ymptom/indica-tion goes awey, repl.ce the odgi-nelECM.
PRIMARY HO2S {Sensor 1} CONNECTOR C113SECONDARY HO2S (Sensor 2ICONNECTOR C45tr
Wire side of female terminals
ECM CONNECTOR A I32P)
IGPlG1
so2HTC{GRN/RET
c
4tr
A, 4\'/ | PO2HTC \=/ \ltoRN/BLKt \-T--] \
PGl(BLK)
2a 1f lefil tt12't5t51? t8t92022 23
2526l2823
Wire side of temale terminals
(From page '11-74)
Check fo. a short in the wire(O2SHTC linel:1. Turn the ignition switch OFF.2. Disconnect the ECM connec-tor A (32P).
3. Check for continuity betweenthe ECM connector 46 or A5*termanai and body ground.
Rcpair short in the wire botweenECM IAG or A5*l .nd HO2S.ls there continuity?
Substituto a known-good ECMand recheck. lf symptom/indica-tion goes away, replac€ the origi-nalECM.
3 rl 15 6
15 15 17 lA
*r P0141
11-75

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

- 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