connector ACURA INTEGRA 1998 Service Service Manual

The scan tool indicates Diagnostic Trouble Code (DTC) P0122: A low voltage problem in the Throttle Position{TP) sensor circuil.
The TP Sensor is a potentiometer. lt is connected to the throttle valve shaft. As the throttle position changes, the throttleposition sensor varies the voltage signalto the ECM.
ARUSHHOI.DER
BRUSH 5
FULLTHROTTLE
TP SENSOR CONNECTOR IC115)
Wire side of temale terminals
ECM CONNECTOR D {16P)
(GRN/BLUI
Wire side ot female terminals
sG2 / -\
fr rrr r 'tr\
- 1 2 3)
|{- f- /
| _-,/tlI /6 I TPS-\j/
Terminalside of maletermrnats(To page 11-64)
The MIL has be€n reDort€d on.DTC P0122 is stor€d.
Problem veritication:1. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator fan comes on, thenturn the ignition switch OFF.2. Turn the ignition switch ON (ll).
3. Check the throttle positionwith the scan tool.
ls there approx. 10% whenthe throttle is fully closedand approx.90o/o when thethrottle is fully opened?
lntermittenl tailure, system is OKat this time. Check tor poor con-nections or loose wires at Cl15{TP s€nsor) end ECM.
Check lor an open in ihe wire(VCC2line):
1. Turn the ignition switch OFF.2. Disconnect the TP sensor con,nector,3. Turn the ignition switch ON (ll).4. Measure voltage betweenTP sensor connector terminalsNo. l and No. 3.
ls there approx. 5 V7
Check fo. an open in wire IVCC2line):lleasure voltage between ECMconnector terminals D10 and D11.
R.p.ir opon in tho wire betwoenECM {D101 and TP sen3or.ls there approx. 5 V?
Substitute a known-good ECMand recheck. lf pr6sc.ibed volt-age ia now available, replaco theoriginalECM.
Check for an open or 3hort in TP3ensor:1. Turn the ignition switch OFF.2. Measure resistance betweenTP sensor terminals No. '1 andNo.2 with the throttle fullyctoseo,
OUTPUT VOLTAGE {V)
4
RESISTOR3
2
TERMINAL
I
o
THROTTLEOPEI{INGBUS}IINGIDLE
sG2{GRN/BLK)vcc2IYEL/BLU}
vcc2{YEL/BI
l\e
4E
i2iRN,
. llLI5
6/101t 12
t515
(cont'd)

I
PGM-FI System
Terminal side ot male terminals
ECM CONNECTOR D {16P}
TPSIREO/BLK)tr:l
sG2
rlzlr rl
6,?1otl12
13 tat5l5
{GRN/BLU)
Wire side of female terminals
L
ls there approx. 0.5 - 0.9 kO?
Check Ior an open or short in theTP sensor:Measure resistance between TPsensor terminals No. 2 and No. 3with the throttle fully closed.
ls there approx.4.5 k0?
Check lor an open in the ECM:1. Reconnect the TP sensor con-nector.2. Turn the ignition switch ON {lli.3. Measure voltage beween ECMconnector terminals D1 andD11.
ls there approx.0.5V when thethrottle is fully closed andapprox. 4.5 V when the throttleis fully opened?
Substitute a known-good ECMand .echeck. It olescribed volt-age is now available, .oplace theo.iginal ECM.
Check tor shon in the TCM:1. Turn the ignition switch OFF.2. Disconnect the 22P connectorfrom the TCM.3. Turn the ignition switch ON lll).4. Measure voltage between ECMcon nector terminals D1 andD11.
ls there approx.0.5 V when thethrottle is fully closed andapprox. 4.5 V when the throttleis fully opened?
Repeir short in the wire betweonECM {D11, TCM and TP sensor.
(From page 11-63)
(A/T only)L 'A'"fll I

The scan tool indicates Diagnostic Trouble Code (DTC) P0123r A high voltage problem in the Throttle position(TP) sensor circuit,
TP SENSOR CONNECTOR {Cl15I
sG2{GRN/BLK}(YEL/BLU)
Wire side of female terminals
Th€ MIL has been reported on.DTC P0123 is stored.
Problem veriticationl1. Start the engine. Hold theengine at 3,000 rpm whh noload (in Park or neutral) untilthe radiator tan comes on, thenturn the ignition swhch OFF.2. Turn the ignition switch ON (ll).3. Check the throttle positionwith the scan tool.
ls there approx. l0% whenthe throttle is fullyclosedand approx. 90% when thethrottle is fully opened?
Intermittoni {ailure, system is OKal this time. Check tor poor con-nections or loose wires at C115{TP sensor} and ECM.
Check for an open in the TP sen-sot:1. Turn the ignition switch OFF.2. Disconnect the TP sensor con,nectot.3. Turn the ignition switch ON (ll).4. Measure voltage between TPsensor connector terminalsNo.3 and No.'1.
ls there approx. 5 V?
Check for an open in th€ wire(SG2linel:
Measure voltage between ECMconnector terminals Dl0 and 011.
Ropair open in the wir6 betweenECM lD11l and TP sensor.ls there approx. 5 V)
Substitute a known-9ood ECMand rocheck. lf prescribed volt-age is now availablo, roplace theoriginal ECM.
ECM CONNECTOR D I16PI
Wire side of female terminals
(cont'di
1 1-65

I
PGM.FI
Primary
System
Heated Oxygen Sensor (HO2S) (Sensor 1l(cont'dl
PRIMARY HO2S {Sensor'l} CONNECTOR (C1131
PHO2S T--rwHTl - --l
.l1 2ll1-{
0tls rl
Y,-I
Wire side of female terminals
Does it stay at 0.1 V or less?
Check lor a short in the wires:1. Turn the ignition switch OFF.2. Disconnect the ECM connector D (16P).
3. Check for continuity betweenHO2S connector terminal No. 1and body ground.
1 1-68
Check ror a short in the HO2S:1- Turn the ignition swilch OFF.2. Disconnect the Primary HO2S(Sensor 1) connector.3. Stan the engine and let it ;dle.4. Check the Primary HO2S (Sen
sor 1) output vohage with the
(From page '11 67i
Subslitute a known-good ECMand recheck. lf symptom/indica-tion goes away, replace lhe origi-nal ECM.

JThe scan tool indicates Diagnostic Trouble Code (DTC) P0132: A high voltage probtem in the primary HeatedOxygen Sensor (HO2S) (Sensor 1) circuit.
Problem veritication:1. Do th; 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. Test-drive with the A/T in Elposition, M/T in 4th gear.4. Check the Primary l-lO2S (Sen-sor 1) outprrt voltage with thescan tool during decelerationusrng comptetely closed throt-tle.
YES
Check tor an open in the HO2S:1. Turn the ignition switch OFF.2. Disconnectthe Primary HO2S(Sensorl)connector.
lnstall a jumper wire on the harness side ofthe Primary HO2S(Sensor 1) connector betweenterminals No.1 and No.2.Turn the ignition switch ON t).Check the Prjmary HO2S (Sen-sor'l) output voltage with thescan tool.
Intermittent failur€, svstem is OKat this time. Check for poor con-nectaons or loose wires at C113(Primary HO2S lsensor lll andECM.
5.
PRIMAnY HO2S {Sensor 1) CONNECTOR tC1t3l
PHO2S(WHT}
Wire side of female terminals
ECM CONNECTOR D (16PI
JUMPERWIREPHO2S(WHT)F;r=12 3 !l
sG2
5
./ 1012
13
(GBN/BLU)
Wire side of female terminals
(cont'd )
- The MIL has b€€n ieDorted on.- DTC P0132 isstored.
Replace the Primary HO2S (Sen-sor 11.ls there 1,0 V or more?
Check for an open in the wiros{PHO2S lin6):1. Turn the ignition switch OFF.2. Connect ECM connector termi-nals D7 and Dl1 with a jumper
3. Turn the ignition switch ON 0).4. Checkthe Primary HO2S (Sen-sor 1) output voltage with thescantool.
Repair open in the wire betweenECM (D7) end Primarv HO2S lsen-sor l).
ls there 1,0 V or more?
Substitute a known-good ECMand recheck. lf symptom/indica-tion goesaway. r€place th€ origi-nalECM.
1 1-69

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
Secondary Heated Oxygen Sensor (HO2S) (Sensor 2l (cont'd)
The scan tool indicates Diagnostic Trouble Code (DTC) P0138: A high voltage probiem in the Secondary
Heated Oxygen Sensor {HO2Si (Sensor 2) circuit.
YES
The MIL has been reported on.DTC P0138 is stored.
Problem verification:1. Do the ECM Reset Procedure2. Startthe engine. Holdtheengineat 3,000 rpm with no load (in
Park or neutral) untilthe radia'
torfancomeson.3. Check the secondary HO2S(Sensor 2) outPUt vo ltage at
3,000 rpm withthe scan tool.
lntermittent lailur€, svsted i3 OK
at this time. Chock tor Poor con'
nections or loo3e wires at C451
lSecondary HO2s lsensor 2ll and
ECM,
Does the voltage stay at 0.6 V
ls there 0.6 V or more?
Check for an open in the wite
{s()2S line):1. Turn the ignition switch OFF.2. Connect ECM connector ter-minals D13 and Dl4 with ajumper wire.3. Turn the ignition switch ON (ll).
4. Check the Secondary HO25(Sensor 2) output voltage withthe scan tool,
Repair opsn in the wire b€tweonECM {D14 or O13} and SecondaryHO2S {Sensor2).ls there 0,6 V or more?
Substitute a known-good ECMend r6check. It symptom/indica-tion goes away, rcplace the origi-nal ECM.
tI
t$
ffi
tljl'l
t,
lfi
il
fl'I
Check for an open in the HO2S:1. TLrrn the ignition switch OFF.2. Disconnect the SecondaryH02S (Sensor 2) connector.
3. Connect the Secondary HO2S(Sensor 2) 4P connector ter_
minals No. 1 and No.2 with ajumper wire.4. Turn the ignition switch ON (ll).
5. Check the Secondary HO25(Sensor 2) output vo lta ge
with the scan tool.
SECONDAFY HO2S {Sensor 2l CONNECTOR C451
sHo2sIBLU/REDIsHo2s GNOIONN/BLUI
Wire side of female terminals
ECM CONNECTOR D I16P}
sHo2sGND{ORN/BLUI
sHo2sIBLU/RED)
Wire side of female terminals
JUMPER WIRE
i 11-72L

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

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)