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

PGM-FI System
Random Misfire
lF()gool", tftod-' and some or lpiogol throughTo3oti
The scan tool indicates Diagnostic Trouble Code (DTC)
P0300*,, P1300*1 and some of po30t - pO3O4; Randommisfire.
Descriotion
Misfire detection is accomplished by monitoring the crankshaft speed with the crankshaft speed fluctuation (cKF) sensorwhich is attached to the crankshaft.lfmisfiring strong enough to damage the catalyst is detected, the MIL will blink during the time of its occurrence, and DTcP0300*', P1300*1 and some of DTCs P03ol through P0304 will be stored. Then, after misfire has ceased, the MtL will comeon,
lf misfiring that increases emissions is detected during two consecutive driving cycles, the MIL will come on, and DTcand some of DTCS p0301 through p0304 wi

be stored.NOTE: lf some of the DTCS listed below are stored at the same time as a misfire DTc, troubleshoot those DTcs first. thentroubleshoot the misfire DTC.
P0106, P]128, P1'129; MAp sensorP0171. P0172; Fuet metering
P0505: ldle Control Svstem
P1336, P1337; CKF sensor
P1361, P1362: TDC sensor
Pl381. Pl382: CYP sensor
P1508: IAC valve *1:,97 model*2: '98 - 00 models
Possiblo Caus€
. Fuel pump insufficient fuel pressure, amountofflow. Fuel line clogging. blockage, leakage. Fuel filter clogginga Fuel pressure regulator stuck open. Distributormalfunction
. lgnition coil wire open, leakage. lgnition control module malfunction. Valves carbon deposita Compression lowa Fuel does not meet Owner's Manual spec., lack offuel
Troubleshooting
By test-driving, determine the conditions during which misfire occurs. Depending on these conditions, test in the orderdescribed in the table below.
Possible cause
[ ;;;;- -....
Crankshaft
speed fluctuation
sensor
Fuel
pressureDistributor and
lgnition wirestcMValve
Clearance
Conditionsection 611-178section 23section 23section 6
Only low rpm and load,6)o
Only acceleratingooo
Only high rpm and loado@,a'@
Not specificationG\o@o@
NOTE: lf misfire doesn't recur, some possible causes are fuel that doesn't meet owner's manual spec, lack of fuel, carbondeposits on spark plu9, etc.
11-126
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Misfire Detected in One Cylinder
Ipffi1] Thescantoot indicates Diagnostic Trouble Code (DTC) P0301: Cylinder 1 misfire detected.
lF03O2l 16".""n toot indicates Diagnostic Trouble Code (DTC) P0302; Cylinder 2 misfire detected.
I P0303 | fne scan tool indicates Diagnostic Trouble Code (DTC) P0303: Cylinder3 misfire detected.
lF0il04l 16" ""un tool indicates Diagnostic Trouble Code (DTC) PO3O4: Cylinder 4 misfire detected
Description
Misfire detection is accomplished by monitoring the crankshaft speed with the crankshaft speed fluctuation (CKF) sensor
which is attached to the crankshaft.
lf misiiring strong enough to damage the catalyst is detected, the MIL will blink during the time of its occurrence. and DTC
P0301, P0302, P0303 and/or P0304 will be stored. Then, after the misfire has ceased, the MIL will come on.
lf misfiring that increases emissions is detected during two consecutive driving cycles. the MIL will come on, and DTc
P0301, P0302, P0303 and/or P0304 will be stored.
NOTE: lJ some of the DTcs listed below are stored at the same time as a misfire DTc, troubleshoot those DTcs first, then
troubleshoot the misfire DTC.
P0107, P0108, P'n2a, P1129t MAP sensor
Po'17 'l , P0112t Fuel suPP|Y system
P0441: EVAP insufficient Purge flow
P1336, P1337: CKF sensor
P1359, Pl361, P1362: TDC sensor
Pl381, P1382: CYP sensor
Possible Cause
. Fuel injector clogging, fuel leakage, air leakage
. Fuel injector circuit open or shorted
. Spark plug carbon deposits, fouling, malfunction
. lgnition wires open, leaking
. Distributor malfunction
. Compression low
. Valve clearance out of specification
(cont'd)
11-127
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PGM-FI System
Misfire Detested in One Cylinder (cont'dl
Troubl93hooting Flowchart
The illu stration shows'97 - 98 models,'99 - 00 modelsare similar.
NOTE:.lf there is no freeze data ol misfiring,just clear the DTC..lf there is no freeze data ot misfiring,test drives under various conditionsare necessary,
- Th. MIL h!3 b6on r.portod on.- DTC m30r, P0302, m303. orP0304 is indicated.
Ch.ck tho fuol inicctor tunction:Start the engino, and listen for Iclicking sound at the fuol injectorin the probl€m cylinder.
Check for an open or short in theharness between the ECM/PCMand the luel injector.
Boprir opan or 3hort in tha wlre.
- Roplaco th. tuel inioctor.- Substitut. . known-goodECM/PCM .nd rochock. It3ym ptom/ indicati on go.3aw.y, replace the oliginalECM/PCM.
Problom vorification:1. Atter chacking the lre€ze data,do the ECM/PCM Reset Pro-cedure.2. Exchange the spark plug fromthe problem cylinder with oneol another cylinder.3. Connect the SCS service con-nector.4. Tost-drive the vohicle severaltimes in the rango ol the freezedata.
(To page'11-129)
11-128
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(From page 11-128)
lntormittent misfire due lo sparkplug fouling, etc. (no mislire at
this tim€).
ls DTC P0301, P0302, P0303,or P0304 indicated?
ooes the misfire occur in theother cylinder?Replace the faulty spark Plug.
Check lor fuel iniector maltunc-
t|on:1. Exchange the fuel injectorfrom the problem cylinderwith one from another cylin-der.2. Let the engine idle for two min
utes.3. Test'drive the vehicle severaltimes in the range of the freezedata,
lntermittent misfiro due lo bad
contrct in the fuel iniector con-nector {no misfire at this time).
ls DTC P0301, P0302, P0303,or P0304 indicated?
Does the misfire occur in theother cylinder?Replace lhe faulty luel inlector.
Check following items- Valvo clearance- Cvlinder l€ak-down- Compression- Crsnkshaft Speed FluctuationICKF) sensol
NOTE: lf there is no freeze data of misfiring, test drives under various condi_
tions are necessary.
11-129
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PGM-FI System
Knock Sensor {KSl
('99 - 00 models) The scan tool indicates Diagnostic Troublo Code (DTC) P0325: A malfunction in the circuit ofthe Knock Sensor (KS).
ECM/PCM CONNECTOR C 131P}
Wire side of female terminals
KS 1P CONNECTOR IC13?'
KSIRED/BLU)
KS(BED/BLU)
Wire side ol femaletermtnals
ECM/PCM CONNECTORc (31P)
- The MIL has been rooorted on.- DTC m325 is storod.
Problem verification:1. Do the ECM/PCir, Reset Procedure,2. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator tan comes on,then let it idle.3. Hold the engine at 3,000 -
4,000 rpm for at least 60 sec-onds,
Intermittent lailu.e, 3ystom is OKat thi3 tim. (te3t drive m.y benacalLrYr.Chock to. poor connsctions olloora wiros rt C137 lknock aon-.o. (KS)) and ar the ECM/FCM.
Ch€ck tor a short in the wir6 {KSlinel:1. Turn the ignition switch OFF.2, Disconnect the knock sensorlP connector.3. Check lor continuity betweenECM/PCM connector terminals C3 and body ground.
Replil rhort in the n irg b6{wocntho ECM/PCM lc:ll and the knocks€ngr1.
Check fo..n open in the wire{KS line):Check for continuity betweenECM/PCM connector terminal C3and knock sensor connector ter,minal No. 1.
B.pair opon in the wirc lrotweenlho ECM/PCM lctl and thc knockacnsor.
ls there cont;nuity?
Substitute a known-good knocksensor and recheck.
ls DTC P0325 indicated?Bcpl.ce the original knock 3€nsor,
Substituto a known-good ECM/PCM and .echeck. lf 3ymptom/indication goes away, replacethe original ECM/PCM.
NOTE: Torque the knock s6nsor to31 N.m (3.2 kgl.m, 23 lbf.ft).
1 1-130
Wire side ot female terminals
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tro-rsl
1Tffi61
tF136t
fPfa6r-1
tF138tl
I-Pi382l
Crankshaft Position/Top Dead Genter/Gylinder Position (CKP/TDC/CYPI Sensor
The scan tool indicates Diagnostic Trouble Code (DTC) P0335; A malfunction in the Crankshaft Position (CKP)
sensor circuit,
The scan tool indicates Diagnostic Trouble Code (DTC) P0336: A range/performance problem in the Crankshaft
Position {CKP) sensor circuit.
The scan tool indicates Diagnostic Trouble Code {DTC) P1361: Intermittent interruption in the Top Dead Center
(TDC) sensor circuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P1362: No signal in the Top Dead Center (TDC) sensor
ci.cuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P1381: Intermittent interruption in the Cylinder Position
(CYP) sensor circuit.
The scan toot indicates Diagnostic Trouble Code {DTC) P1382: No signal in the Cylinder Position (CYP} sensor
circuit.
Description
The CKP Sensor determines timing for fuel injection and ignition of each cylinder and also detects engine speed. The TDC
Sensor determines ignition timing at start-up {cranking) and when crank angle is abnormal. The CYP Sensor detects the
position of No. 't cylinder for sequential fuel injection to each cylinder. The CKP/TDC/CYP Sensor is built into the distribu-
ror.
NOTE: lf DTC P1359 is stored atthesametimeas DTC P0335, P0336, Pl361, P1362, P1381 and/or P1382, troubleshoot DTC
P1359 first, then troubleshoot those DTCS.
DISTRIBUTOR lOPCoNNECTOR (Cl211
TDCP IGRNI
Terminal side ofmale terminalsTIrcM IREOI
'97 model:
- The MIL has be€n reported on.- DTC P0335, P0336, P136'1,P1362, Pl341 and/oi P1382 arestored.
Problem verific.tion:1. Do the PCM Reset Procedure.2. Start the engine.
Intermittent lailure, 3yd6m i3 OKat thb tims. Chcck tor poor con-nections ol looso wire3 si C12'l
ldistributor) .nd .t the PCM.
ls DTC P0335, P0336, P1361, P1362,P1381 and/or P1382 indicated?
Ch.ck for an open in tho CKP/TDC/CYP sensor:1. Turn the ignition switch OFF.2. Disconnect the distributor 10Pconnector.3. Measure resistance betweenthe terminals of the indicatedsensor (see table).
Replace tho distributor ignitionhousing {sea 3ection 41.ls there 350 - 700 o?
(To page 11-132)
CYPP IYELI
CYPM (BLKI
SENSOEDTCSENSOBPCMERMINAIWIRECOLOR
CKPP0335P0336
lc28LU
8c12
TDCP1361P1352
2GRN
9c13RED
CYPP'I381P1342
3c4YEL't0c14BLK
{cont'd)
11-131
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PGM-FI System
Grankshaft Position/Top Dead Center/Cylinder Position (CKP/TDC/CYPI
Sensor (cont'd)
DISTRIBUTOR10P CONNECTOR tCl2l)CKP P
IBLUITDC P {GRNI
PCM CONNECTORS C I31P)
CKP P TDC P CYP PIBLU) IGRNI IYEL}
Terminal side ofmale terminals
IREDI IBLK)
Wire side offemale terminals
{WHT)
{From page 1'1-131)
Check for a short in the CKP/TDC/CYP sensor:Check for continuity to bodyground on both terminals of theindicated sensor individually (see
table on page 1l 131).
R€plac€ the distributor ignitionhousing {see section 4}.ls there continuity?
Ch€ck fo. an open in the wires{CKP/TDC/CYP lines):'1. Reconnect the distributor 10Pconnector.2. Disconnect PCM connector C(31P).
3. Measure resistance betweenthe terminals of the indicatedsensor on the PCM connectorlseetable on page 1l 131).
Repair open in the indicated sen-sor wires {se6 table on page 11-131).ls there 350 - 700 0?
Check tor a short in the wires{CKP/TDC/CYP linesllCheck for continuity betweenbody ground and PCM connectorterminals C2, C3 and/or C4 individ-
R€Dair short in the indicatod sen-sor wires lsee table on page 11-13rI.ls there continuity?
Substitute a known-good PCM,and recheck. lf symptom/indica-tion goes away, r€place lhe origi-nal PCM.
CKP P TDC P CYP P
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TDCP (GRN)
CYPP (YEL}
TDCM (REDI
'98 - 00 models:
'98 model:DISTRIBUTOR 1OPCoNNECTOR (C121)
CYPM IBLKI
Terminal side of male terminals
'99 - 00 modelr:DISTRIBUTOR 8PcoNNECTOR {C121)
TDC M (RED}
Terminal side of male terminals
CKP P
{BLU)
'98 modeliTDC P {GRNI
CKP MIWHT)
TOC P
IGRNI
CYP P(YEL)
(RED)
CYP M(BLKI
M
female terminals(cont'd)
1 1-133
TDC P (GNN}
CYP P IYEL}
CYP M IBLKI
SENSORDTCSENSORERMINAT):'99 mode
ECM/PCMIERMINAIWIRECOLOR
CKPP0335P0336
1 t2)c8BLU
8 (6)c9
TDCP1361Pl362
2 (3)c20GBN
9 (7)c21RED
CYPP]381P]382
3 (4)c29YEL
10 {8)c30BLK
ECM/PCM CONNECTOFS C {31P)
The MIL ha3 been reoorted on.DTC P0335. P0336, P1361,P1362. P1381 andlor P13V arestor€d,
Problem verification:1. Do the ECM/PCM Reset Procedure.2. Start the engine.Intermittant tailure, svstom is OKat this time. Check for poor con-nections or loose wirgs al C121{distributo.l .nd at the ECM/PCM.
ls DTC P0$5, m$6, Pl361, P1362,P1381 and/or Pl382 indicated?
Check for an open in th6 CKP/TDC/CYP sensor:1. Turn the ignition switch OFF.2. Disconnect the distributor 10P(8P)* connector.3, Measure resistance betweenthe terminals of the indicatedsensor {see table).
Rephce the distributor ignitionhouaing l3e9 3oction 4).ls there 350 700 0?
Check for a short in the CKP/TDC/CYP s€nsor:Check for continuity to bodyground on both terminals of theindicated sensor individually (see
table).
Replaco tho distributor ignitionhousing lsee soction tll.
Check for an op€n in th6 wiresICKP/TDC/CYP linesl:1. Reconnect the distributor 10P(8P)* connector.2. Disconnect ECM/PCM connec-tor C (31P).
3. Measure resistance betweenthe terminals of the indicatedsensor on the ECM/PCM connector (see table).
Repair open in the indicated sen-sor wires lsee t.ble).ls there 350 700 O?
(To page 11-134)
':'99 - 00 models
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PGM-FI System
Grankshaft Position/Top Dead Center/Cylinder Position (CKP/TDC/CYPI
Sensor {cont'd}
(From page 11 133)
ECM/PCM CONNECTOR C {3IPI
Wire side of female terminals
Chock lor r 3hon in tho wirerICKP/TDC/CYP lin6):Check for continuity betweenbody ground and ECM/PCM con-nector terminals C8, C20 and/orC29 individually.
Rep.ir lhort in ths indicated son-aor wiroa 136o table on prge 11-133).
Substituto r known-good ECM/PCM, and .6chock. tf 3ymptom/indication goe3 swey, replrcetho original ECM/PCM.
11-134
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Vehicle Speed Sensor (VSSI
lPosoo-]-'. |posol l-'
'97 modol:
The scan tool indicates Diagnostic Trouble Code {DTC} P0500*'or P0501*r: A range/perfor-
mance in the Vehicle Speed Sensor (VSS) circuit. * I ; A/T*2i Mfi
FCM CONNECTORS
A t32Pl
LG1(BRN/BLK)
NOTE: Do not use the engine to turn thofront wheels with th6 rear wheels on theground. The 4WD system will engage andthe vehicle will suddenlv Iurch forward.
Wire side ot female terminals
LGl
{BRN/BLKI
(cont'd)
11-135
The MIL hes boen roported on.DTC m501 is 3tor€d.
Problom verificetion:1. Test'drive the vohicle.2. Check the vehicle speed withthe scan tool,
lntormittent tailure, rystom b OKat thia timo. Chock tor poor con-nection3 or 10o3o wires rt C129lvss) .nd rr rhe Pcfr4,
ls the correct speed indicated?
Chock for an open in tho PiCM:1. Turn the ignition switch OFF.2. Block the rear wheels and setthe parking brake.3. Jack up the lront of the vehicleand support it with saletystands.4. Turn the ignition switch ON (ll).
5. Elock the right front wheel andslowly rotate the left trontwheel by hand.6. Measure voltage betweenPCM connector terminals C18and A9.
Substitulc a known-good PCMand .och6ck. It symptom/indicd.tion go.a away, .cplaco tho origi-nel FCM.
Doesthe voltage pulse 0 Vand 5 V or battery voltage?
Check for a .hort in the PCM:L Turn the ignition switch OFF.2. Disconnect the PCM con'nector C (31P).
3. Turn the ignition switch ON (ll).
4. Elock the right front wheeland slowly rotate the left front
5. Measure vohage between PCMconnector terminals C18 andA9.
Substituto e known-good PCMand rochock. f rymptom/indica-tion goos rwry, roplsc. tho origi-nalFCM.
Doesthe voltage pulse 0 Vand 5 V or battery voltage?
- Repair short in the wirebetween the PCM lC18l,cruise control unit, speodo-meter, and VSS,- Repair opon in the wirebetween the PCM {C181 .ndrhe vss.- f wire is OK. tost lho VSS l3oosoction 231.
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