1998 HONDA CIVIC speed sensor circuit

PGM-FI System
Random Misfire
lFoioo l*u o, [FTioo l*' *' and
The scan tool indicates Diagnostic Trouble Code (DTC)
P0300*5 or P1300*3 *1 and some of P0301 - P0304:Random misfire.Description
Misfire detection is accomplished by monitoring the crankshaft speed with the crankshaft speed fluctuation (CKF) sensorwhich is attached to the crankshaft.
lf misfiring strong enough to damage the catalyst is detected. the MIL will blink during the time of its occurrence, and DTCP0300*5 or P1300*3'*' and some of DTCs P0301 through P0304 will be stored. Then, after misfire has ceased, the MIL willcome on.
lf misfiring that increases emissions is detected during two consecutive driving cycles, the MIL will come on, and DTCP0300*5 or P1300*3 *a and some of DTCS P0301 through P0304 will be stored.NOTE: lf some of the DTCS listed below are stored at the same time as a misfire DTC. troubleshoot those DTCS first, thenrecheck for the misfire DTC.
P0106*4. P0107. P0108, P1128*3 *5, Pl129*3 *5; MAP sensorP0131. P0132: HO2S
P0171, P0112i Fuel metering
P0401, P 1491, P1498: EGR svstem*1P0505: ldle Control SystemP1253: VTEC System*,P1361, P1362: TDC sensorP1381, Pl382: CYP sensorP1508: IAC valve
Possible Cause. Fuel pump insufficient fuel pressure, amount of flow. Fuel line clogging, blockage, leakage. Fuel filter clogging. Fuel pressure regulator stuck open. EGR system malfunction*1. Distributormalfunction. lgnition coil wire open. leakage *l: D16Y5 engine. lgnition control module malfunction *2: D16Y5, D16Y8, Bt6A2 engine. MAP sensor range/performance, poor response*r *3: '97 models. Valves carbon deposit *4;'96 models. Compression low *5: '98 - 00 models. IAC valve malfunctionr.. VTEC system malfunction*,. Fuel does not meet Owner's Manual spec., lackoffuel. HO2S. HO2S circuit
Troubleshooting
By test-driving, determine the conditions during which misfire occurs, Depending on these conditions, test in the orderdescribed in the table below.
Possible
- --^ ---
rage
causeEGR*1
system
Crankshaft
position (CKP)
sensor
Fuel
pressure
Distributor and
lgnition wirestcMClearance
tAc
ValveMAP
sensor
section 611-230,
231section 23section 23section 611-19411
Only low rpm and
loado@@oo
Only accelerating@o@@
Only high rpm and
toaooo@
Not specificoo@
NOTE: lf misfire doesn't recur, some possible causes are fuel that doesn't meet owne/s manualspec, lack of fuel, carbon deposits on spark plug, etc.
1 1-1 66
I
P0304

I
Misfire Detected in One Cylinder
P0301 | The scan tool indicates Diagnostic Trouble Code (DTC) P0301: Cylinder 1 misfire detected.
[F03O2l 16"""untool indicates Diagnostic Trouble code (DTc) P0302: Cylinder2 misfire detected.
[FO3Ofl 16" ".un toot indicates Diagnostic Troubte Code (DTC) P0303; Cylinder 3 misfire detected.
I P0304 I ths..rr tool indicates Diagnostic Trouble Code (DTC) PO3O4: Cylinder 4 misfire detected.
D€scription
lMisfire detection is accomplished by monitoring the crankshaft speed with the crankshaft speed fluctuation (CKF) sensor
which is attached to the crankshaft,
lf misfiring strong enough to damage the catalyst is detected, the MIL will blink during the time of its occurrence, and DTC
PO3O1, P0302, PO3O3 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 cyclss, the MIL will come on, and DTC
P0301, P0302, P0303 or P0304 will be stored.
NOTE: lf some of the DTCS listed below are stored at the same time as a misfire DTC, troubleshoot those DTCS first, then
recheck for the misfire DTC.
PO106*1, P0107, P0108. P1128*3'*5, P1129*3'*5: MAP sensor
P0131, P0132: HO2S
P0171, P0172iFuel suppiy system
P0335, P0336: CKF sensor
P0401. P1491, P1498: EGR system
P0441: EVAP system Insufficient purge flow*6
Pl359. P1361. Pl362: TDC sensor
P1381. Pl382: CYP sensor*o: '96 models*6: '96 D16Y5 engine,'96 D16Y/ engine,'96 D16Y8 engine {sedan),'97 D16Y5 engine,'97 D16\4, engine (coupe: KA,
KC models, sedan KA. KC, KL (DX) models, hatchback:all models),'97 D16Y8 engine (sedan: KA, KC models)
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
. ComDression low
. Valve clearance out of spec
. VTEC system malfunction (D16Y5, D16Y8. 81642 engine)
. HO2S
. HO2S circuit
(cont'd)
11-167
r'a

PGM-FI System
tFos3sl
tFffi6l
tPr361 I
fPfi62l
fFr38il
tF13s2-l
Crankshaft Position/Top Dead Genter/Gylinder Position (CKP/TDC/CYP) Sensor
('96 - 98 Models, '!n - 00 D16Y5 engine with M/Tl
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 CrankshaftPosition (CKP) sensor circuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P1361: Intermittent interruotion in the Too Dead Center(TDC) sensor circuit.
The scan tool indicates Diagnostic Trouble Code {DTC) P1362: No signal in the Top Dead Center (TDC} sensorcircuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P1381: Intermittent interruption in the Cvlinder Position{CYP) sensor circuit.
The scan tool indicates Diagnostic Trouble Code {DTC) Pl382: No signal in the Cylinder Position (CYP} sensorcircuit.
Description
The CKP Sensor determines timing for fuel injection and ignition of each cylinder and also detects engine speed. The TDCSensor determines ignition timing at start-up (cranking) and when crank angle is abnormal. The Cyp Sensor detects theposition of No. 1 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 atthesametime as DTC P0335. P0336, P1361, Pl362, P1381 and/or P1382, troubteshoor DTCP1359 first, then recheck for those DTCS. Ot6y5 6ngine: Dt6y7, ot6y8 enqin6s:
SENSORBOTOR
TDCSENSORCKPSENSORSENSORROTORSENSORROTORSENSORROTORROTORROTOR
DISTRIBUTOR 1OPcoNNECTOR tC120tTDC P
- The MIL hrs been reported on.- DTC P0335, P0336, P1361,P1362, P1381 and/or Pl382 6restored,
Problem verification:1. Do the ECM/PCM Reset Proce-dure.2. Stan the engine.
Intermittent hilu.e, system b OKat this time. Check tor poor con-n€ctions or 10036 wiros at C120{distributor} and ECM/PCM.
ls DTC P0335, P0336, P1361, P1362,P1381 and/or P'l382 indicated?
Check for an open in the CKP/TDC/CYP sensor:1. Turn the ignition switch OFF.2. Disconnect the distributor 10P
3. Measure resistance betweenthe terminals of the indicatedsensor (*see table).
Replace the distributor ignitionhousing (soe section 23).ls there 350 - 700 0?
CYP M {BLK}
SENSORDTCSENSORIERMINATECMfCMTERMINATCOLOR
CKPP033s
m336
2c2BLU
6c12
TDCP1361
P1362
3GRN
7cl3RED
CYPP!381
P't382
c4YEL
8c148LK11-172

PGM-FI System
l-Fos3sl
tFos36l
tF1361 l
Fr362-1
tF13sil
Crankshaft Position/Top Dead Center/Cylinder Position (CKP/TDC/CYPI Sensor
f99 - 00 Models except D16Y5 engine with M/T)
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
circuit.
The scan tool indicates Diagnostic Trouble Code (DTC) P1381: Intermittent interruption in the Cylinder Position(CYP) sensor circuit.
lTiaSt The scan tool indicates Diagnostic Trouble Code (DTC) P1382; No signal in the Cylinder Position (CYP) sensor: circuil.
DoscriDtion
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. 1 cylinder for sequential fuel injection to each cylinder. The CKP/TDC/CYP Sensor is built into the distribu-
tor.
NOTE; lf DTC P1359 is stored at the same time as DTC P0335, P0336, P1361. P1362, P1381 and/or P1382, troubleshoot DTC
P1359 first, then recheck for those DTCS. D16Y5 engino:
SENSORROTOR
TDGSENSORCKPSENSOBTDCSENSOBCKPSENSOBCYPs€NsonBOTORROTORBOTONROTOR ROTOR
D16Y7, D16Y8 ongine:
(To page 11-175)
1-174
- The MIL has been reportod on.- DTC P0335, P0336. P1361,P1362, P1381 rnd/or P1382.restored.
Problem verific{tion:1. Do the ECM/PCM Reset Proce-dure.2. Start the engine.
Intormittcnt failure, systom b OKat thb time. Check to. poor con-nections or loose wires at C120(dktributorl and ECM/PCM.
ls DTC P0335, P0336, P1361, P1362,P1381 and/or Pl382 indicated?
Check tor an open in the CKP/TDC/CYP 3enior:1. Turn the ignition switch OFF.2. Disconnect the distributor 10Pconnector,3. Measure resistance betweenthe terminals of the indicatedsensor (*see table).
Replrce the distributor ignitionhou3ing (!ee section 231.ls there 350 700 0?
SENSORDTCSENSORTEBMINAIECM/PCMTERI\,4INAICOLOR
CKPP0335
P0336
2c88LU
6c9
TDCP1361
P1362
3c20GRN
7c21BED
CYPP1381
P1342
c29YEL
Ic30BLK

PGM-FI System
Vehicle Speed Sensor (VSSI ('96 - 98 Models,'99 - 00 D16Y5 engine with M/Tl
@The scan tool indicates Diagnostic Trouble Code (DTC) P0500: A malfunction problem in the Vehicle SpeedSensor (VSS) circuit Iexcept A!/T (D16Y7, D16Y8 engine)1.
The scan tool indicates Diagnostic Trouble Code (DTC) P0501: A range/performance problem in the VehicleSpeed Sensor (VSS) circuit [A,rT {D16Y7, D16Y8 engine)].
ECM/PCM CONNECTORS
A {32P} LG.t
VSS IBLU/WHT}
Wire side ot temale terminals
LGI(BRN/8LK}
The MIL has been reDorted on.DTC P0500 or P0501 is stored.
Problem verification:1- Test drive the vehicle.2. Check the vehicle speed withthe scan tool.
Intermittent tailure, system is OKat this time. Check tor Door con-nections or loose wires at C117{VSSland ECM/PCM.
ls the correct speed indicated?
Check for an open in the ECM/PCM:1. Turn the ignition switch OFF.2. Elock the rear wheels and setthe parking brake.3. Jack up the front of the vehicleand support it with safetystands.4. Turn the ignition switch ON (ll).
5. Block the right tront wheel andslowly rotate the left front
6, Measure voltage between theECM/PCM connector termi-nals C18 and A9.
Subslitute a known-good ECM/PCM and recheck. lf symptom/indic.tion goes away, replace theorisinal ECM/PCM.
Does the voltage pulse 0 Vand 5 V?
Check tor a short in ihe ECM/PCM:1. Turn the ignition switch OFF.2. Disco n n ect the ECM/PCMconnector C (31P).
3. Turn the ignition switch ON {ll).4. Block the right front wheeland slowly rotate the left front
5. Measure voltage between theECM/PCM connector terminalsC18 and A9.
Substitute a known-good ECM/PCM and recheck. lI symptom/indication goes away. replacethe original ECM/PCM.
Does the voltage pulse 0 Vand s V?
- Repair short in the wirebetwGen ECM/PCM {C18} endvss, TcM.- Repair open in the wirebetween ECM/PCM {Cl8} andvss.- lf wire is OK, test the VSSlsee section 23).
{BRN/BLK}
239l0lt
121611t8t9202321
2A2930
c {31P}
I38191o
tl12ialr5i6l10./
I2356a9l011
12l3l5t61tl8t920222a
27202930
12910
t2l13l.l7I l,/ 1,/231r.lslt., ),rlL
VSS {BLU/WHT}
11-176

fFosoo-l
lFosoil
Vehicle Speed Sensor (VSS) ('99 - 00 Models except Dl6Y5 engine with M/T)
Thescantoo|indicatesDiagnosticTroub|ecode(DTc)Po5o0:Ama|functionproblemintheVehic|espeed
Sensor (VSS) circuit lexcept A//T (D16Y/, D16Y8 engine)l'
Thescantoo|indicatesDiagnost|cTroub|eCode(DTC)Po5o1:Arange/performanceprob|emintheVehicle
SDeed Sensor {VSS) circuit tA,/T (D16Y7, D16Y8 engine)1.
ECM/PCM CONNECTORS
B {25P)
I
t
Wire side ol lemale terminals
ECM/PCM CONNECTORS
B E5PI
The MIL has been reported on
OTC P0500 or P0501 is stored.
Problem veritication:1. Test-drive the vehicle.
2. Check the vehicle speed with
the scan tool
lntermitt6nt failure, sYstem is OK
at thb time. Check tor Poor con-
nections or loose wir6 at C117
{vss} .nd ECM/PCM
ls the correct sPeed indicated?
Check for an open in the ECM/
PCM:1. Turn the ignition switch OFF.
2. Block the rear wheels and set
the parking brake
3. Jack uP the front ofthe vehicle
and support it with safety
stands.4. Turn the ignition switch ON (ll).
5. Block the right front wheel and
slowly rotate the left front
6, Measure voltage between the
ECM/PCM connector termi_
nals C23 and 820.
Substituto a known'good ECM/
PcM and rech€ck. ll sYmptom/
indic€tion goes awaY, lsplace the
original ECM/PCM.
Does the voltage Pulse 0 V
and 5 V or battery voltage?
Check for a short in the ECM/
PCM:1. Turn the ignition switch OFF.
2. Disco n n ect the EcM/PcM
connector C (31P).
3. Turn the ignition switch ON (ll)
4. Block the right front wheel
and slowly rotate the left front
5. Measure voltage between the
ECM/PCM connector terminals
C23 and 820.
Substiiute . known-good ECM/
PCM and r6check. lf symptom/indication goes awaY, rePlace
the origin.l ECM/PCM.
Does the voltage Pulse 0 V
and 5 V or battery voltage?
- Reoair short in the wire
between ECM/PCM {C23} and
vss. TcM.- Repai. open in the wire
between ECM/PCM {C231 andvss.- lf wire is OK, tesr the VSS
{see sestion 23).
Wire side oI female terminals
11-177

\Crankshaft Speed Fluctuation (GKFI Sensor .
firC- 48 Models, '99 - 00 D16Y5 engine with M/Tl
The scan tool indicates Diagnostic Trouble Code (DTC) P1336; Intermiftent interruption in the Crankshaft Speed
Fluctuation (CKF) sensor circuit.
ThescantooIindicatesDiagnosticTroub|ecode{DTC)P1337:NosignaIinthecrankshaftspeedF|uctuation(cKF}
sensor circuit.
D6scription
Thediagnosticsystemhasapu|serrotoronthecrankshaftandapu|sepick-upsensorontheengineblock.TheEcM/PcM
monitors the crankshaft speed ftuctuation based on the cKF sensor signal, and judges that 8n engine misfire occurred if
the fluctuation goes beyond a predetermined limit'
I
fPrk6l
lFr3g7-l
CKF SENSOR 3P CONNECTOR
L:l.)l l.' -Ir-T--T---.]l1 l2l3llL-''---r
CKFM I I CKFP
twrfit 1,.^ | lsLul\.7
Terminal side of male terminals
CKF MIWHT}
CKF PIBLUI
I(cont'd)
- The MtL hds been reported on.- DTC P1336 and/or P1337 a.e
stored.
P.oblem v€rific.tion:1. Do the ECM/PCM Reset Proce-
dure.2. Stan the enginelntormittont lailur6, tY3tom b OK
at thit tima. Chock tor Poor con'
nactions or loota wito! at C102
IC-KF son$rl .nd ECt /PCM, and
mrka suro CKF tonaor mounting
boh ittigM.
Chock for .n open in tho CKF aen-
30t:1. Turn the ignition switch OFF
2. Disconnect the CKF sensor 3P
connector,3. Measure the resista nce
between the CKF sensor 3P
connector terminals No. 1 and
No.3.
ls there 1.6- 3.2 kO?
Ch€ck tor a short in the CKF son'
30tiCheck {or continuitY between
body ground and the CKF sensor
3P connector termin6ls No. 1 and
No.3 individuallY.
(To page 11 184)
1 1-183

tCrankshaft Speed Fluctuation (CKF) Sensor -
('99 - 00 Mociels except D16Y5 engine with M/T)
The scan tool indicates Diagnostic Trouble code (DTC) P1336: Intermittent interruption in the crankshaft speed
Fluctuation (CKF) sensor circuit
The scan tool indicates Diagnostic Trouble Code (DTC) P1337: No signal in the Crankshaft Speed Fluctuation (CKF)
sensor circuat,
Description
Thediagnosticsystemhasapulserrotoronthecrankshaftandapu|sepick-upsensorontheengineb|ock.TheEcM/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'
I
Ftu6l
tF13g7l
CKF SENSOR 3P CONNECTOR
r--r t|-.r-r'--]llll l2l3ll.l---'.-T_
CKFM I I CKFP
twHTl |/Ai i lBlul--\9-
Terminal side oI male terminals
CKF M(WHT)CKF P(BLU)
t(cont'd)
1 1-185
- The MIL has b€on reportad on.- DTC P1336 and/or P1337 are
stored.
Problem verification:1. Do the ECM/PCM Reset Proce'
dure.2. Start the enginelntermittcnt failuro, sydcm is OK
ai this time. Check lot Poor con_
noctions or loo3e wiros at C102
ICKF s€nsor) and ECM/FCM, and
make suro CKF sansor mounting
bolt b tight.
Check tor an open in the CKF sen_
1. Turn the ignition switch OFF
2. Disconnect the CKF sensor 3P
3. Measure the resistance
between the CKF sensor 3P
connector terminals No. 1 and
No.3.
ls there 1.6 3.2 kO?
Check for a short in ihe CKF sen_
sot:Check for continuity betweenbody ground and the CKF sensor
3P connector terminals No 1 and
No.3 individuallY.
(To page 11-186)