1997 HONDA CR-V Workshop Manual

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.
www.emanualpro.com

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
www.emanualpro.com

Barometric Pressure (BARO) Sensor
The scan tool indicates Diagnostic Trouble Code (DTC) P1106: A range/performsnce problem in the Barometric
Pressure {BARO) Sensor circuit.
The MIL has been reDorted on.OTC Pl106 b slored.
Problem ve.ification:1. Oo the ECM/PCM reset pro'
ceoure.2. Start the engine. Hold theengine at 3,000 rpm with noload (;n Park or neutral) untilthe radiator lan comes on, thenlet it idle.3. Connect the SCS service con-nector,4. Test'drive with the A/T in Eposition, M/T in 4th gear.
5. Accelerate Ior five secondsusing wide open throttle.
Intermittent fsilure, sy3tom i5 OKat this time.ls DTC P1106 indicated?
Substitute a known-good ECM/PCM .nd recheck. It symptom/indication goes away, replace theorigioal ECM/PCM.
fTiloz l
tP11o8l
The scan tool indicates Diagnostic Trouble Code (DTC) P1107: A low
The scan tool indicates Diagnostic Trouble Code (DTC) Pl108: A
circuit.
voltage problem in the Baro sensor circuit.
high voltage problem in the Baro sensor
- The MIL h.3 b€en roport€d on.- OTC Pl10? or Pl108 i3 stored.
Problom veritic.lion:L Do the ECM/PCM Reset Pro-cedure.2. Turn the ignition switch ON (lli.
Intarmittoni failure, lystom b OKat thb time.ls DTC P1107 or P1108 indicated?
Sub3tituto a known-good ECM/PCM and rcch6ck. ll symptom/indication 9oo3 away. .oplacorho o.igin.l ECM/PCM.
www.emanualpro.com

PGM-FI System
Elestrical Load Detector (ELDI (USA Modell
The scan tool indic€tes Diagnostic Trouble Code (DTC) P1297: A low voltage problem in the Electrical Load
Detector (ELD) circuit.
'97 model:
ELD 3P CONNECTOR {C354I
--+-l1L2l3l
ler-
O) tcnrulaeot
Y
Wire side ot female terminals
PCM CONNECTOR D I16P)
Wire side of female terminals
Problem vsriticltion:1. Do the PCM Feset Procedure.2. Start the engine.3. Turn on the headlights.
Intormittent lailuic, 3vstom k OKat thk time. Ch.ck tor poor con-nections or loose wiro3 at C127(loc.ted on PCM b.sckot), C354{ELO, .nd at tho FCM.
ls DTC P1297 indicated?
Ch.ck for 3hort in lho ELD:Measure voltage between bodyground and the ELD 3P connectorterminal No.3.
ls there approx. 4.5 V?
Check for a short in tho wire IELlinel:1. Turn the ignition switch OFF.2. Disconnect PCM connector D(16P).
3. Check for continuity betweenbody ground and PCM connector terminal D16.
Rcpair 3hort in tho $rire botwo€nthe PcM lDl6l and tho ELD.
Substituto a known-good PCMand rocheck. lf 3ymptom/indic.-tion goos !w!y, repl.ce the origi-nal PCM.
1 1-138
www.emanualpro.com

98 - 00 mod6l3:
- OTC P l1€7 is 3tored.
Problcm vcrificrtion:1. Do the ECM/PCM Reset Pro-cedure,2. Start the engine.3. Turn on the headlights.
Intcrmittent tailuro, ryrtom ir OK!t thi3 timo. Ch.ck tor poor con-nectiont or looao wire! at CXl54IELD) rnd at rh6 ECM/PCM,
ls DTC P1297 indicated?
Chock for 3hort in tho ELD:Measure voltage between bodyground and the ELD 3P connectorterminal No.3.
ls there approx. 4.5 V?
Chcck lor a 3horl in tho wiio (EL
linol:1. Turn the ignition switch OFF.2. Disconnect ECM/PCM con-nector A (32P).
3. Check for continuity betweenbody ground and ECM/PCMconn€ctort€rminal A30.
Ropair shon in thc wira botwocntho PcM (A301 rnd rho ELD.
Sub.tituto a known.good ECM/PCM .nd rocheck. ll lymptom/indication gocs .w!y. replsceth6 o.iginal ECM/PCM,
ELD 3P CONNECTOR ICAs4I
f_l,I 2l3l-
l--- r'.
&) iGRN/RED)
T
Wire side of temale terminals
ECM/PCM CONNECTOR A I32P)
Wire sid6 of female terminals
(cont'd)
-13911
www.emanualpro.com

PGM-FI System
Electrical Load Detestor (ELDI (USA Model) (cont'dl
The scan tool indicates Diagnostic Trouble Code {DTC) Pl298; A high voltage problem in the Electrical Load
Detector (ELD) circuit.
97 modsl:
ELD 3P CONNECTOR {C35,'I
Wire sido oI lemale terminals
r lzlrl--T_ow
/6 IBLKI
Y
Repail op€n in th. wire b€tws€ntho No. 15 ALTERNATOR SPSENSOR 17.5 A) tuse in theunder-dlrh fuso/r.lay box andth6 ELD.EL {GRN/NEDI
PCM CONNECTORS
Problam verification:1. Do the PCM Reset Procedure.2. Start the engine.3. Turn on the headlights.Intermittent tailuro, systcm is OK.t this time. Chack for ooor con-noction! or looro wire3 at C127{locaied on PCM brackot), C35{{ELDI and .t tho PCM.
Chack for an opan in tho wilellGl linol:1. Turn thg ignition and head-lights OFF.2. Disconnect the ELD 3P connector.3. Turn the ignition switch ON {ll).4. M6asure voltage b€tw€enbody ground and the ELD 3Pconnoctor terminal No. 1.
Chock lol !n open in the wireIGND linel:'1. Turn the ignition switch andheadlights OFF.2. Disconnect the ELD 3P conneqor,3. Check for continuity betweenbody ground and the ELD 3Pconnector terminal No. 2.
Ropair opon in th6 wi.e betweonth. ELD connector rnd GiO2,
Ch.ck lo. an open in th€ wiro (EL
line):Check for continuity between theELD 3P connector terminal No. 3and PCM connector terminal 016.
Chock for . malfunction in theELD:1. Reconnect the ELD 3P con-neclor,2. Start the engine and allow itto idle.3. While measuring voltagebetween PCM connector terminals 016 and A9. turn theheadlights on (low).
ls there continuityT
R6pafu op6n in tho wire betweenthe PCM {D161snd th6 ELD.
Subltituto . known-good PCMand rachock, f symptom/indic.-tion goes awry, ropl.ce the origi-n.l PCM.
Does the voltage drop?
Wire side of lemale terminals
11-140
Wire side of lemale terminals
www.emanualpro.com

38 - 00 modeb:
Problem verification:1. Do the ECM/PCM Reset Proceoure.2. Stan the engine.3- Turn on the headlights.Intermittent feilure, sysl.m is OKat this time. Check for ooor con-nections or loose wires at C354(ELDI and at the ECM/PCM.
ls DTC P1298 indicated?
Check lor an open in the wire(lG1 line):'1. Turn the ignition and head-lights OFF.2. Disconnect the ELD 3P connector.3. Turn the ignition switch ON (ll).
4, Measu re voltage betweenbody ground and the ELD 3Pconnector terminal No. '1.Reprir open or short in th6 wirebotweon the No. 15 ALTERNA-TOR SP SENSOR {7.5 Al fuse inthe under-drah fuse/relay boxand the ELD.
Check tor an opon in tho wire{GND line}:1. Turn the ignition switch andheadlights OFF.2. Disconnect the ELD 3P connector.3. Check for continuity betweenbody ground and the ELD 3Pconnector terminal No. 2,
Repair opon in the wire betweenthe ELD conneclor and GilO2.
Ched( fo. an op€n in the wir€ (EL linel:Check for continuity between theELD 3P connector terminal No. 3and ECM/PCM connector termi-nalA30.
Repair op€n in tha wile botwecnthe EcM/PCM lA30l .nd rhe ELD.
Check for s malfunction in lhe ELD:1. Reconnect the ELD 3P con-nector.2. Start the engine and allow itto idle.3. While measuring voltagebetween ECM/PCM connectorterminals A30 and 820, turnthe headlights on (low).
Substiiute a known-good ECM/PCM and recheck. It symptom/indication goos away, replacethe original ECM/PCM.
ELO 3P CONNECTOR {c35/rl
Wire side of female terminals
Wire side of female terminals
Wire side ot temale terminals
ELD 3P CONNECTOR {C35,lt
EL IGRN/RED}Wire side of femaletermrnars
ECM/PCM CONNECTORS
A l32P)
11-141
www.emanualpro.com

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
www.emanualpro.com