Page 594 of 1395
Electrical Troubleshooting {'97 Model)
Troubleshooting Flowchart - Mainshaft Speed Sensor
Po$ible Cau3o
. Disconnocted mainshaft speod sen-sot connectot. Short or open in mainsh.ft sp6ed
' Faulty meinshaft spoed sensor
NOTE: Code P0715115) on the PCMdoesn't always mean there's an electricalproblem in the mainshaft or counlersharlspeed sensor circuit; code P0715(15) mayalso indicate a mechanical problem in thetransmission. Check the freeze data witha Honda PGM Tester. lf the mainshaftspeed sensor rpm was 0, proceed withthis troubleshooting. lf not, the probablecause is a mechanical problom within thetransmission,
MAINSHAFT SPEEOSENSOR CONNECTOR
_E_
ItiT,ll-F=r
9t
LJ
Terminal side of male terminals
PCM CONNECTOR B {25P'
Wire side of female terminals
. OBD ll Scan Tool indic.t6 Codem715.. Self-diagnosis E indic.tor lightindicatag Code 15.
Check and record the freeze datain case it is needed later {or prob,lem verification.
Check the mainshaft and counter-shaft speed sensor installation,and checkthe sensors for damage.
Are the mainshaft and counter-shaft speed sensors installedproperly, and not damaged?Reingtall or reolace and recheck.
Meaaure MaiNhatt Spoed Sen3orR6sist!nce at the Sensor Con-necaor:1. Disconnect the 2P connectorfrom the mainshaft speed sen-sor connector.2. lreasure the resistance of themainshaft speed sensor.
ls the resistance 400 - 600 O?
Check Mainahaft Speed Sensortor a Short Circuit:1. Disconnect the B (25P) connec-tor lrom the PCM.2. Check for continuity betlveenbody ground and 815 terminaland the 814 terminal individu-
ReDair short in the wir€6 b€t reenthe 815 and 814 torminals andthe mainsh!ft sp€ed sensor.
To page l4-79
14-78
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Page 595 of 1395
From page 14'78
Moasuro Mrin3haft Spoed SanlorResktanco:1. Connect the mainshaft speedsensor 2P connector,2, Measure the resistancebetween the 815 and 814 ter-minals,
Run the Electricrl TroubloshootingFlowchs tor codo m72O l9l.Chock for loo3e torminal fh in thePCM conn6cto.s. It necessarY,substitute a known-good PCMand rochgck.
ls the resistance 400 - 600 O?
Check NM Wiro Continuity:1. Disconnect the 2P connectorfrom the mainshaft speed sen-sor connector.2. Check for continuity betweenthe 815 terminaland the No.2terminal of the mainshaftspeeo sensor conneoor.
Ropair open in the wir6 betw€onthe 815 terminal and the main-shaft sDood $nsoa.
Check NMSG Wire Continuity:Check for continuity between the814 terminal and the No. 1 termi-nal of the mainshaft speed sensorconnector.
R€pai. opon in the wi.o betweenthe Bltl terminal and tho main'3haft sDe€d sensoa,
Ch.ck lor loos. t6rminallit in thePCM connecto13, lf neca3sary,substitute a known-good PCMand rochock.
PCM CONNECTOR B {25P}
Wir€ side of female terminals
MAINSHAFT SPEED SENSORCONNECTOR
14-79
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Page 628 of 1395
Electrical Troubleshooting ('98 - 00 Models)
Po$ibl€ Csuse
. Loo3€ or tauhy conn€ction batween the PCM and vehicle harness. Diaconnected countetshaft 3Deod sensor connectoa. Short or opon in countershalt spegd sensor wiro. Faulty countershatt spoed sensol
COUNTERSHAFT SPEEDS€NSOR CONNECIOR
ttt'l-T-T-
rolYILI
Terminal side of male terminals
. OgD ll Sc.n Tool indicat* Codem720.' selt-diagnosis E or E indica-tor light blinks nin6 time3.
It the PGM Tester is available,retrieve the A"/T Freeze Data, thenclear the PCM.
Test-drive the vehicle under thesame conditions the Freeze Data
Intormittent failuro. The systomis OK .t thb time. Check the Iit ofthe pins in rll connsctors .fLctodbv thi! code.
Check the countershaft speedsensor installation. and check itfor damage.
ls the countershaft speed sensorinstalled properly. and not dam-aged?Reinstall or replace and rechcck.
Measure Countershaft Sp6€dSonsoa R€sistsnc€ at the SenlorConnector:1. Disconnect the 2P connectorfrom the countershaft speed
2. Measure countershaft speedsensor resrstance at the sensorconnector.
ls the resistance 400 - 600 0?
To page 14-113
14-112
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Page 629 of 1395
Check Countershaft Speed Sen-sor for a Short Circuit:'1. Disconnect the D (16P) connector from the PCM.2. Check lor continuity betweenbody ground and the D10 ter-minal and Dl6 terminal indi-vidually.
Repair short in the wire3 botweonthe Dl0 and D16 terminals andthe countershaft 3De€d sensor.
Measure Countershatt SpeedS6n3or Circuit to. an Open:1, Co n nect the countershaftspeeo sensor connector,2. Measu re the resistancebetween the D10 and D16 ter-mrnals,
Repair loose terminal or open inthe wiies between the D10 andO16 terminals and th. countet-shaft sD€ed sensor.
ls the resistance 400 - 600 0?
Check tor loos. terminal fit in thePCM conn€ctoas. It necessary,substitute a known-good PCMand recheck.
From page 14'112
A t32PlB (25P1
a l32PlB (25P1
PCM CONNECTORS
Wire side ol female terminals
NC IBLUI
D {16P1
NCSG IGRNI
c l31P)
ial, tu]g
c (31PI
NCSG IGRN}
14-113
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Page 630 of 1395
Electrical Troubleshooting ('98 - 00 Modelsl
Troubleshooting Flowchart - Mainshaft Speed Sensor
Porsible Cruse
. Disconnsct€d msinsh.ft 3pood 3gnlor conncctol. Short or open in mainshaft 3poed sensor wire. Faultv mainshrtt speed sonsot
NOTE: Codo P0715 (15) on the PCM doesn't always moan there's an electricalproblem in the mainshaft or countershaft speed sensor circuit; code P07'15 (15)may also indicate a mechanical problem in the transmission. Any problem caus-ing irregular countershaft to mainshaft spoed difference can cause this codo; thiscan sometimes be seen in A'/T Free2e Data. Freeze Data can also indicate an elec-trical problem in the sensor circuits ;f one of the sensors reads 0 mph during atest dnve.
MAINSHAFT SPEEDSENSOR CONNECTOR
Terminal side of male terminals
. OBD ll Scan Tool indicat$ Codem715.. S€lf-diagnosi3 E or @ indica-tor light indicatos Code 15.
lf the PGM Tester is available,retrieve the A/f Freeze Data, thenclear the PCM.
Test-drive the vehicle under thesame conditions the Freere Data
Intermittont tailuro. Tha sy3temb OK at this tims. Check thefit oftho pins in .ll connoctoB alt6ctedbv this code.
Did the code return?
Check the mainshaft and counter-shaft speed sensors installation,and check them for damage.
Are the mainshaft and counter-shaft speed sensors installedproperly, and not damaged?Reinstall or ropllce and rochock.
Moasure Mainshatt Spe€d SenrorR€sirtanco at ths S€nsol Connoc-tor:1. Disconnect the 2P connectorfrom the mainshaft speed sensor.2. Measure mainshatt speed sen-sor resrstance at the sensorconnefior.
ls the resistance 400 600 0?
To page 14-115
14-114
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Page 631 of 1395
A {32P}
From page 14-114
Check Mainshaft Speed Sensorfor a Short Circuit:1. Disconnect the D (16P) con-nector trom the PCM.2- Ch€ck tor continuity betweenbody ground and the D11 ter-minal and Dl2 terminal individually.
ReDair short in tho wiros botwe€nth€ Dl1 and D12 torminal3.ndtho main3haft 3Doed aonlor.
Moasure Mainshaft Sp6€d SonsorRosi3tancei1. Connect the mainshaft speedsensor conn6ctor.2. Measure the resistancebetween the Dl1 and D12 ter-mrnals,
Run the Eloctric€l TroubldhootingFlowdrrrt for co& F0720 (codo 91.Chock lor loo3o torminrl fit in thePCM connectors. It necos3ary,substitute r known-good PCMand r€ch€ck.
ls the resistance 400 - 600 0?
Chock NM Wire Continuity:1. Disconnect the 2P connectortrom the m6inshaft speed sen-
2. Check for continuity betweenthe D11 terminal and the No. 2terminal of the mainshaftspeeo sensor connector,
Rcpair opon in tho wire betw.enth6 Dll tarminal and the main-shaft lpood sonsor.
To page'14-1'16
PCM CONNECTORS
c t3lPl
wire side ol female terminals
B l25Pt
D t16PtNMSG-'lTZ lit4'l Fl l'1til FTil ,'l unrv v v v v l.t1lLtLt?!/]|,1tut larrlrllllpr=rtavtq tptntat EElt [1!]t! pl
NM (RCD| (O)
(o)Y
Y=
c {31P1--_|--1\‰1,/ s/1 st/v,1zzfififinffiiFrF/l,6t FFF| LrLrEllNM {REDI
MAINSHAFT SPEEOSENSOR CONNECTOR
Wire side of temale terminals
(cont'd)
14-115
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Page 632 of 1395
Electrical Troubleshooting ('98 - 00 Models)
Troubleshooting Flowchart - Mainshaft Speed Sensor (cont'd)
PCM CONNECTORS
MAINSHAFT SPEEDSENSOR CONNECTOR
Wire side of female terminals
From page 14 115
Ch6ck NMSG Wire Continuitv:Chock for continuity between theDl2 terminal and the No. 1 termi-nal of the mainshaft speed sen-sor conn€ctot.
Ropai. op€n in the wi.e hn eonthe D12 terminal and the main-shaft sDeed lensor,
ls there continuity?
Check for looso terminal fit in thePCM connoctorc. lf necessary,substitute a known-good PCMand aech6ck.
14-116
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Page 643 of 1395
From page 14-126
Measure TPS Voltage:1. Reconnect the A (32P) and B(25P) connectors to the PCM
2. Turn the ignition switch ON (ll)
3. Measure the voltage between
the C27 and B 20 ot 822 te(mi'
nats.
ls there approx. 0.5 V?
Check Throttlo Position Sensol
Ground Line:'1. Turn the ignition switch OFF
2. Disconnect the throftle position
sensor connector.3. Check tor continuity between
tho No. 1 terminal of the
throttle position sensor con-
nector and the 820 and 822
terminsl of the PCM.
ls there continuity?
Check tor continuity betlveen the
C18 and 820 or 822 terminals
Rgpsir opan in lhe wire botween
the Cl8 torminal .nd the throttlegosiiion Sensor.ls there continuity?
Check lor looss tetminalfit in the
PCM conn€ctoia. It nece3sarY,
subslituta a known-good PCM
and .echock.
A t32Pl
To page'14-128
LG1 (BRN/BLKI
FCII CONNECTOFS
B {25P1c (31P)
LG2IBRN/BIXI
THROTTTI POSMONSENSOR CONNECTOR
SG2 IGRN/BLK}rL2l3t
Wire side of female terminals
B {25P1c l3lPl D (16P1
LGl IBRN/BLKISG2 {GRN/BLK}
n l,I-il nFFFTI,T';T;IEFML"| -
(cont'd)
wire side of female terminals
LGl IBRN/BIXI
14-127
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