ignition HONDA CR-V 1998 RD1-RD3 / 1.G Repair Manual

PGM-FI System
(From page 11 103)
ls there approx. 0.5 - 0.9 kO?
Chock for an open or short in theTP sensor:Measure resistance between theTP sensor 3P connector termin-nals No. 2 and No.3 with thethrottle t!lly closed.
ls there approx. 4.5 kO?
Check to. an open in the PCM(TPS linell1. Reconnect the TP sensor 3Pconnector.2. Turn the ignition switch ON (ll).3. Measure voltage betweenPCM connector D (16P) termi-nals D1 and D1l.
Substitute a known-good PCMand recheck. It orescribod volt-age is now available, roplaco theo.iginal PCM.
ls there approx.0.5 V when thethroftle is fully closed andapprox. 4.5 V when the throttleis fully opened?
Repair short in the wire bstweenthe PCM lDl)snd the TP ssnso..
Throttle Position (TP) Sensor (cont'd)
TP SENSOR 3P CONNECTOR
Terminal side of male terminals
PCM CONNECTOR D I16PI
TPS IREO/BLK)SG2 (GRN/BLKI
Wire side ol female terminals
11-104
I
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'98 - 00 model3:
The MIL has boon reDortod on.DTC m122 b rtorod.
P.oblom veiification:1. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator tan comes on,then turn the ignition switchOFF.2. Turn the ignition switch ON lll).3. Check the throttle position
with the scan tool.
ls there approx. 10% when thethrottle is fully closed andapprox. 90% when the throttleis fully opened?
Intarmittent failure. system is OKat thia time. Check for poor con-n€ctions or loolo wires rt C130ITP s.nsorl and.t the ECM/FCM.
Check for an opon or short in thowire {VCC2 linel:1. Turn the ignition switch OFF.2. Disconnect the TP sensor 3Pconnedor,3. Turn the ignition switch ON (ll).
4. Meas! re voltage betweenthe TP s€nsor 3P connector ter-minals No. 1 and No.3.
ls there approx. 5 V?
Check lor an opon in wiro IVCC2linel:Measure voltage between ECM/rcM connector terminals C'18 andc2a.Chock for en op€n or Bhort in TP3an30r:1. Turn the ignition switch OFF.2. At the sensor side, measureresistance between the TPsensor 3P conneclor terminalsNo. 1 and No. 2 with the throt-tle fully closed.
B.psir opon in the wire b€{woontho ECM/PCM {C281 and th6 TP3en!xtt.ls lher€ approx. 5 V?
Subslitute e known-good ECM/PCM .nd r.chock. lf pro3cribedvoltrge iB now rYrilablo, replacath. originll ECM/PCM.
TP SENSOR 3P CONNECTOR {C130}
sG2IGRN/BLKI
vcc2IYEUBLUI
Wire side oI Iemale lerminals
Wire sid6 of temale terminals
Terminal side of male torminals
(cont'd)
1 1-105
ECM/PCM CONNECTOR C (31P}
sG2IGRN/BLKIa-,l 18 sl./|135
/1617lrs]zolzr zzl
232527)gJ lzgi3o sr I
T^vccz {YEL/8LUl
(To page 11-106)
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PGM-FI System
TP SENSOR 3P CONNECTOR
Terminal side of mal6 terminals
(GRN/BLKI
Wire side ol temale torminals
Throttle Position (TPl Sensor (cont'dl
(From p6ge 11-105)
ls there approx. 0.5 - 0.9 kO?
Chock for rn op€n or 3hort in thoTP sonsorMeasure resistance between theTP sensor 3P connector terminalsNo. 2 and No. 3 with the throttlefully closed.
ls th€re approx. 4.5 k0?
Check lor an open in the ECM/PCM ITPS linel:1. Reconnect the TP sensor con'nector.2. Turn the ignition switch ON {ll).3. Measure voltage betweenECM/PCM connector C (31P)
terminals C18 and C27.
ls thgre 6pprox.0.5 V when thethrottle is Iully closed andapprox.4.5 V when the throttleis lully opened?
Subrtituto . known-good ECM/PCM rnd rocheok. lI pro.cribed
voltaga ia now rvailablc, rcpl.ceth. o.igln.l ECM/PCM.
Raoai. ahort in th€ wira lrltw.anthe ECM/PCM (C181 lnd th€ TP3€n3rot.
ECM/PCM CONNECTOR C {31P}
I37llaI
1617t8 19lm
2327tl l2e3031
TPS IRED/BLK)Lle
{9}
1 1-106
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The scan tool indicates Diagnostic Trouble Code (DTC) P0123: A high voltage problem in the Throttle Position
(TP) sensor circuit.
TP SENSOR 3P @]{NECTOR IC13O}
sG2(GnN/Br.XlvocrtYEt /8LU)
{GBIT/BLKI
(cont'd)
11-107
Wiro side of fom.le terminals
PCM CON'{ECTOF D I16PI
Wire side ot female terhinals
The MIL hlr br€n r.9ort.d on.DTC P0123 ir stored.
Pioblom vorificltion:1. Start the ongin6. Hold th€ongine at 3,000 rpm with noload {in Park or neutral) untilth6 radiator fan comes on.then turn the ignition switchOFF,2. Turn the ignition switch ON (ll).
3. Check the throttle position
with the scan tool.
Intarmittant tailuro, ryrtern b OKat this timo. Chock lor poor con-nections or loo3o wir€3 at C130
ITP 3orcorl .nd at tho ECM/FCM.
ls there spprox. 1oyo when thothrottle is Iully closed andapprox.90% when the throttleis tully open€d?
Choct toJ an opcn in th6 TP s6n-3t']:1. Turn the ignition switch OFF.2. Disconnect the TP sensor 3Pconnectol,3. Turn the ignition switch ON (ll).
4. At the wir6 harnoss side, mea-suro voltage betweon thg TPsensor 3P connector t€rminalsNo. 1 and No.3.
ls there approx.5 V?
Chack for an oDan in tha wira(SG2 linel:M6asu16 voltage b6tween PCMconn€ctor terminals Dl0 and D'! 1.
R.pai. opcn in tha wira botwcontho PcM {o111 rnd the TP 3en-3('t,
ls there approx. 5 V?
('97 model)
(To page 11-108)
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- The MIL has been reported on.- DTC Pl121 is stored,
Problem veritication:1. Turn the ignition switch ON (ll).
2. Check the throttle position
with the scan tool.
ls 14.1% (12.97.)* or higherindicated when the throttle isfully opened?
Intormittent failur6, systom is OKat this lime.
- The MIL has b€en reoorted on.- OTC P1122 is dored.
Problem verification:1. Turn the ignition switch ON lll).2. Check the throttle positionwith the scan tool.
ls'17.670 (16.9%)' or lessindicated when the throftle islully closed?
IntermitteDt tailu.o, system is OKat thb time.
Pl121 lThescantool indicates Diagnostic Trouble Code {DTC) Pl121;Throttle Position (TP) lowerthan expected.
I Pl122 | The scan tool indicates Diagnostic Trouble Code (DTC) P1122: Throttle Position (TP) higherthan expected.
*:'99 - 00 models
1-109
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{From page 11-110}
Check tor a shorl in the HO2S:1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor'1i 4P connector.3. Start the engine and let it idle.4. Check the Primary HO2S(Sensor 1)output voltage withthe scan tool.
Replace the HO2S {Sensor 1).Does it stay at 0.1 V or less?
Check for a short in the wir€(PH02S linel:1. Turn the ignition switch OFF.2. Disconnect the ECM/PCM con-nector (D (16P), C (31P)*).
3. Check tor continuity betweenthe Primary HO2S {Sensor 1)4P connector terminal No. 1and body ground.
Repair short in tho wire botwesnthe ECM/PCM lD7, C16*) .nd th6Prim.ry HO2S (S€nsor 11.
Substituto a known-good ECM/PCM and recheck. ll 3ympiom/indication goes away. raplace th.origin.l ECM/PCM.
PRIMARY HO2S ls.n.or 'l I 4P CONNECTOR (Cl111
PHO2S ---'trwHTr T-T-l
T-1 1 2l
6tlr rlY r___J_J
L
Wire side of temale terminals
(cont'd)
11-111
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PGM-FI System
'99 - 00 models:
- The MIL has bsen reported on.- DTC P0131 ir storod.
Problem ve fication:1. Do the ECM/PCM Reset Pro-cedure,2. Start the engine. Hold theengine at 3,000 rpm with noload {in Park or neutral) untillhe radiator tan comes on.3. Check the Primary HO2S(Sensor 1) oltput voltage withthe scan tool during accelera-tion using wide op€n throttle.
Inl.rmittant failura, 3yrtam i! OKat thb tim.. Ch.ck tor poor con-nectiona oa looaa wlraa al C111{Pri|n.ry HO2S, Son3or 1l .nd .ttho ECM/FCM,
Does the voltage stay at 0.5 Vor less?
Check tho fuel pressure (see pago1r,178).
R.p.ir th. fu€l lupply ry!t.m.
Chock lor a short in tho HO2S:1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor 1) 4P connector.3. St6rt the engine and lot it idle.4. Check the Primary HO2S(Sensor 1) output voltage withthe scan tool,
Does it stay 6t 0.5 V or less?Rephc. th6 HO2S (S.n3or 11.
Chock for a short in tho wirc(PHO2S lino):1. Turn the ignition switch OFF.2. Disconnect the ECM/PCM con-nector C (31P).
3. Check tor continlity betweenthe Primary HO2S {Sensor 'l}
4P connector terminal No. Iand body ground.
Ragah rhort in tha wira balwoanth. ECM/PCM {Cl61 rnd thcPrirn.ry HO2S (S.n3or 11.
Substltut6 a known-good ECM/PCM and recheck. lf rymptom/indicrtion 00os away, raplaco thcoriginal ECM/PCM.
Primary Heated Oxygen Sensor (Primary HO2SI (Sensor 1l (cont'd)
PRIMARY HO2S (Son.or 1l aP CONNECTOR |C111)
PHO2S T--1rwHTr f-T---]
--1 1 2lI t--- 1t6)lslrlv L__r__J
_L
Wire side ol female terminals
11-112
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The scan tool indicates Diagnostic Trouble Code (DTC) P0132: A high voltage problem in the Primary HeatedOxygen Sensor {Primary HO2S) (Sensor 1) circuit.
'97 - 98 models:
PHO2S
IWHTIsG2IGRN/BLK}
Wire side ot female terminals
PCM CONNECTOR D {16PI
JUMPER WIRE
PHO2S IWHTISG2 IGRN/BLK}
Wire side of temale terminals
I
(cont'dl
11-113
Problem verification:1. Do the ECM/PCM Resot Pro,ceoute,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 Ay'T in Eposition (M/T in 4th gear).4. Check the Primary H02S{Sensor 1}output voltage withthe scan tool during decelera-tion using completely closedthrottle.
Intormittent l.ilure, 3ystem ia OKat thb timo. Chcck fo. poor con-nections 01 looso wi.es at C111{Prim!ry HO2S, Sensor 1} andECM/PCM.
Does the voltage stay at 1.0 V
Check for an open in th6 PrimaryH()2S:1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor 1) connector-3. Connect the Primary HO25lSensor 1) 4P connector termi-nals No. 1 and No. 2 with ajumper wire.4. Turn the ignition switch ON (ll).5. Check the Primary HO2S(Sensor 1) output voltage withthe scan tool,
ls there 1.0 V or more?
Ch€ck for an opon in the wires(PHO2S, SG2linesl:1. Turn the ignition switch OFF.2. Connect PCM connector ter-minals D7 and Dl1 with a
3. Turn the ignition switch ON (ll).4. Check the Primary HO2S{Sensor 1) output voltage withthe scan tool.
Roprir opon in the wire betweontho PCM {D7 01 D11l and thePrimsry HO2S {S6nsor 1).
ls there 1.0 V or more?
{'97 model}
{To page 11-114)
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PGM-FI System
Primary Heated Oxygen Sensor lPrimary HO2S) {Sensor 1} {cont'dl
(From page'11-l13)
ECM/PCM CONNECTOR C {31PI
11-114
Ch.ck for an open in the wire(PHO2S linel:1. Turn the ignition switch OFF.2. Connect ECM/PCM connectorterminals C16 and C18 with a
3. Turn the ignition switch ON {ll).4. Check the Primarly H02S(Sensor 1) output voltage withthe scan tool.
R€p.ir open in the wire bqtw€enthe ECM/PCM (C161 and th€Primary HO2S (Sen.or'l).ls there 1,0 V or more?
Substitute a known-good ECM/PCM and rach€ck. lt 3ymptom/indication goos away, replacethe origin.l ECM/PCM.
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'99 - 00 modols:
Th6 Mll has b€on reDortod on.DTC ml32 is itorod.
Problem vorification:'1. Do the ECi!4/PCM Reset Procedure,Start the ongine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator fan comes on.Check the Primary HO2SlSensor 1) output voltage withthe scan tool during decelela-tion using completely closedthroftle.
Int.rmitt .fi tailuro, syltom b OKat thit tima. Check for poor con-nactiona oi loo3a wirar !t Cltl(Primrry HO2S, S.nror 1) .nd .tth. ECM/FCM.
Doos the voitage stay at 1.5 Vor more?
Check for an opsn in the PrlmaryHO2S:1. Turn the ignition switch OFF.2. Disconnect the Primary HO2S(Sensor 1)connector.3. Connect the Primary HO2S(Sensor 1) 4P connector t6rmi-nals No. 1 and No. 2 with a
iumperwire.4. Turn the ignition switch ON (ll).
5, Check the Primsry H02S(Sensor 1) output voltage withthe scan tool,
lsthere 1.5 V or more?
Check for an op6n in th6 wiro{PHO2S line):1. Turn tho ignition switch OFF.2. Connect ECM/PCM connectorterminals C16 and C18 with a
iumper wire.3. Turn the ignition switch ON lll).4. Check the Primary HO2S(Sensor 1) output voltage withthe scan tool.
Ropair opon in thc wire bc{w.cnthe ECM/PCM {Cl6}.nd thePrimary HO2S {S€nror 1}.ls there 1.5 V or more?
Substituto a known-good ECM/PCM snd rochock. lf 3ymptom/indicetion go€a awry, roplaca thoorigin.l ECM/PCM.
PRIMARY HOzS (S6n!or 1l aPCoNNECTOR lcltl)
Pt()2sIWHTIsG2{GRN/BTJ(I
Wire side of tem6le terminsls
ECM/PCM CONNECTOR C (31P}
IGRN/BLKI
JUMPER WIRE
Wire side ol temale t6rmin6ls
(cont'd)
-1 15
2789
/1617't819120A22
23E29g)31
PHO2S {WHTIsG2
11
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