1999 HONDA CR-V speed sensor

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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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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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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PGM-FI System
Vehicle Speed Sensor (VSSI {cont'd}
'98 - 00 models:
ECM/PCM CONNECTORS
B t25Pl
NOTE (4WD): Do not use the engine to turnthe front wheels with the rear wheels on theground. The 4WD system will engage andthe vehicle will suddenly lurch forward.
Wire side of female terminals
- The MIL ha3 been reDoned on.- DTC P0500" or P0501*1 i33torod.
Probl6m verification:1. Test-drive the vehicle.2. Check the vehicle speed withthe scan tool,
Intermittont failu.e, svstem is OKat thk time. Check for poor con-nection! or loose wiros at C129lvss) .nd ar the EcM/PcM.
ls the correct speed indicated?
Check for rn open in the ECM/PCM:l Turn the ignition switch OFF.2. Elock the rear wheels and setthe parking brake.3. Jack up the front oI the vehicleand support it with satetystands.4. Turn the ignition switch ON {ll}.5. Block the right front whoel andslowly rotate the lett front
6. Measure voltage betweenECM/PCM connector termi-nals 820 and C23.
Substitute a known-good ECM/PCM and rochock. ll symptom/indicetion 9063 away, .oplace th€origin.l ECM/PCM.
Does the voltage pulse between0 V and 5 V or battery voltage?
Check for a short in the ECM/PCMI1. Turn the ignition switch OFF.2. Disconnect ECM/PCM connector C 131P).3. Turn the ignition swilch ON {ll).4. Block the right front wheeland slowly rotate the left front
5. Moasure voltage between ECM/PCM connector terminals 820and C23.
Sub.titute a known-good ECM/PCM and rschock. It rymptom/indication goos .w.y. replecerhe original ECM/PCM.
Does the voltage pulse betlveen0 V and 5 V or battery voltage?
- R.pair short in the wirobetwe€n the ECM/PCM lC23).nd tho VSS.- Roprir open in th6 wirebotweon the ECM/PCM lc23land th6 vss.- It wirc is OK, te3t ihe VSS(!€e soetion 23).
B (25P)
1
*2:Mft
1-136
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PGM-FI System
Grankshaft Speed Fluctuation (CKF) Sensor
fF13361l Tj":""l.tool indicates Diagnostic Trouble Code (DTCI P1336: Intermittent interruption inthe Crankshaft Speed: Fluctuation (CKF) sensor circuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P1337: No signal in the Crankshaft Speed Fluctuation (CKF)
sensor circuit.
Description
The diagnostic system has a pulser rotor on the crankshaft and a pulse pick-up sensor on the engine block. The ECM/PCM
monitors the crankshaft speed fluctuation based on the CKF sensor signal, and judges that an engine misfire occurred if
the fluctuation goes beyond a predetermined limit.
37 mod.l:
CKF SENSOR 2P CONNECTOR IClO4I
T:]l-r'r Lll
l1 zLl''''CKF P I lcKF Mtalu/aeot fdJ twxrneor\-7
Terminal side of male terminals
(To page 11-113)
11-142
- Tho MIL ha3 been reported on.- DTC P1336 and/or P1337 arestored.
Problem verificrtion:1. Do the PCM Reset Procedure.2. Start the engine.
Intermittent {ailure, systom is OK.l thia timo. Ch6ck tor poor con-nections or loose wir$ at ClorlICKF sonsorl .nd at tho PCM.
Chock tor an opon in th6 CKF .en'30r:1. Turn the ignition switch OFF.2. Disconnect the CKF sensor 2Pconnector,3, M easure the resistancebetween the CKF sensor 2Pconnector terminals No. 'l andNo.2.
ls there 1.6-3.2 kO?
Check fo. a short in the CKF 3en-sot:Check for continuity betweenbody ground and the CKF sensor2P connector terminals No. 1 andNo.2 individually.
CKF SENSOR
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PGM-FI System
Grankshaft Speed Fluetuation (CKFI Sensor (cont'dl
.98 - 00 modols:
CKF SENSOR 2P CONNECTOR IClO'I
r-:-i-_ltr_- |l1 2ll,,-'CKF P I ICKF MtsLuneotTOl wlrrneo)\7
Terminal side of male terminals
r:l
t! El
.KFP XA"*."talu rneor \:f
f rwxvneor
ECM/PCM CONNECTOR C (31P)
CKF PIBLU/REDI
CKF M(WHT/BEOI
Wi16 side of l6male terminals
1278__l
-lI(o
T
161716't9202122
,/ 2s262728293()3l
M
- The MIL has boon reported on.- DTC P1336 and/or P1337 arestored.
ProblGm verification:1. Do the ECM/PCM Reset Pro-cedure,2. Stan the engine.
Inte.mittant failuro, 3y*om b OKat thb tima. Chack lor ooor con-nections or looso wirea at C10a{CKF sensorl and.t the ECM/PCM,
Chgck forun open in tho CKF son-sori1. Turn the ignition switch OFF.2. Disconnect the CKF sensor 2Pconnector.3. Measure the resistancebetween the CKF sensor 2Pconnector terminals No. 1 andNo.2.
lsthere 1.6 - 3.2 kO?
Check for a short in the CKF sen-
Check lor continuity betweenbody ground and the CKF sensor2P connector terminals No. 1 andNo.2 individually.
Check for an open in the wiresICKF linca):1. Feconnect the CKF sensor 2Pconnector.2. Disconnect ECM/PCM connec-tor C (31P).
3. Measure resistance betweenECM/PCM connector termi'nals C22 and C31.
Repair opon in the wir6 botwoonthe ECM/PCM 1C22, glll lnd th6CKF s6n3or.
ls there 1.6 - 3.2 kO?
(To page 11'1451
11-144
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ldle Control System
System Description
The idle speed of the engjne is controlled by the ldle Air Control (lAC) Valve'
The valve changes the amount of air bypassing into the intake manifold in response to electric current controlled by the
ECM/PCM. When the lAc valve is activated, the valve opens to maintain the proper idle speed.
YEL/ From PGM'FI
BLK TMAIN RELAY
VARIOUSSENSORS
4.
IAC VALVE
INTAKE MANIFOLD
After the engine starts, the IAC valve opens for a certain time. The amount of air is increased to raise the idle speed
about 150 - 300 rpm.
when the cootant temperature ts row, the lAc valve is opened to obtain the proper fast idle speed The amount o{
bvoassed air is thus controlled in relation to the engine coolant temperature
When the idle speed is out o{ specification and the scan tool does not indicate Diagnostic Trouble Code (DTC) P0505
or P1508, check the following items:
. Adjust the idle speed (see page 11-169, 170)
. Air conditioning signal (seepagell-1551
. ALT FR signal (see page 1l-159)
. Starter switch signal (see page 11-16'1)
. A,/T gear position signal (see section 14)
. PSP switch signal (seepagell-162)
. Brake switch signal (see page 11-165)
. Fast idlethermovalve (see page'11 168)
. Hoses and connecttons. IAC valve and its mounting O-rings
lf the above items are normat, suDslitute a known-good IAC valve and readjust the idle speed {see page 11-169, 170)
lf the idle speed still cannot be adjusted to specification (and the scan tool does not indicate DTC P0505 or Pl508)
after IAC valve reolacement, substitute a known-good ECM/PCM and recheck lf symptom goes away' replace the
original ECM/PCM.
11-149
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