1998 HONDA CIVIC circuit

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - Mainshaft Speed Sensor
NOTE: Record all freeze data before you troubleshoot.
Po$ible Cause
. Disconnect€d mainshaft sD€edSensor @nnoctot. Short or open in mainshattsJt€ed s6nsoa wire. Faulty mainshaft lpeed s6nso.
NOTE: Code P0715 (15) on the PCMdoesn't always mean there's an electricalproblem in the mainshaft or countershaftspeed sensor circuit; code P0715 (15)may also indicate a mechanical problemin the transmission.
MAINSHAFT SPEEOSENSOR CONNECTOR
Terminal side of male terminals
PCM CONNECTOR B I25PI
. OBD ll Scan Tool indicates Codem715.. Self-dirgnosi3 E indicatorlight indicstes Code 15.
Check the mainshaft and counter-shaft speed sensor installation.
Are the mainshaft and countershaftspeed sensor installed properly?
Moasure Mainshaft Spoed SgnsolRosistance at the Sensor Con-n€ctor:1. Disconnect the 2P connectorfrom the mainshaft speed sen-sor connector.2. Measure the resistance ot themainshaft speed sensor.
ls the resistance 400 600 O?
Check Mainshaft Sp6ed Sensorfor a Short Circuil:1. Disconnect the B {25P) connec'tor lrom the PCM.2. Check for continuity betweenbody ground and 815 terminaland the 814 terminal individu,
Repai. shon in the wi.os bstwoenthe 815 and 814 te.minals andthe mainshatt .Dood 3ensor.
ls there continuity?
To page 14-71
14-70
Wire side of female terminals

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - Linear Solenoid
NOTE: Record all freeze data before vou troubleshoot,
Po$ible Caus6
. Disconnoctod lineaJ solonoidconnectot. Short or open in linoar solenoid
' Faulty linoar solonoidLINEAR
Terminal side ol male terminals
PCM CONNECTOR B I25PI
Wire side of female terminals
SOLENOID CONNECTOR
l;r]l
TT
YI
LI
REDWHT
OBO ll Scan Tool indicates CodeP176a.Self-diagnosi3 E indicatorlight indicates Code 16,
Measure Linear Solenoid Resist-ance at the Solenoid Connecto.:1. Turn the ignition switch OFF.2. Disconnect the 2P connectorlrom the linear solenoid connector,3. Measure the resistance ofthelinear solenoid.
ls the resistance approx. 5.0 O?
Check Linear Solenoid for a ShonCircuit:1. Disconnect the B 125P) connec-tor from the PCM.2. Check for continuity betweenthe body ground and the B1terminal and 82 terminal inda-vidually.
Repair short in the wires bgtwoenthe Bl and 82 terminab and thelineti solsnoid.
Meaaure Linoar Solenoid RGi3t-anc€:1. Connect the linear solenoidconnector.2, Meas u re the resistancebetween the 81 and 82 termi-nals,
Ropair looso terminal or open inthe wires botwe€n the 81 and 82telminals end the linear solenoid.
ls the resistance approx. 5.0 O?
To page 14-73
14-72

Check the G.ound Circuit:Check for continuity between theA9 and A10 terminals.
. Rapair opan in the wirobotweon th6 tormin.b Ag rndA10 and G101.. Raprir looc€ iunction connrc{or.. R.p.ir poor ground {G101}.
Chock tor 100!6 PCM connectors.ll nocessary, substituto a known-good PCM and r6ch6ck.
Ftom page 14-72
PCM CONNECTOR A I32P}
Wiro side of t6male terminals
14-73

Electrical Troubleshooting ('96 - 98 Models)
Troubleshooting Flowchart - E Indicator Light Does Not Gome On
PCM CONNECTOR A I32PI
Wire side of female terminals
Tha E indicator light does nolcome on when the ignition swhchis first turned ON (lll. {lt shouldcome on tol about two s€conds.l
Chock the SeJvico Check Connec-tor:Make sure the special tool (SCS
Seryice Conneclor) is not connect-ed to the service check connector.
ls the special tool (SCS ServiceConnector) connected to the service check connector?
Disconnect the special tool tromthc sarvice check connoctor androcheck.
Check th6 E indicator Light:Shift to lD.l oosition.
Check tor loose PCM connecto6.ll nece3sary, sub.titute a known-good FCM and r.chock.
Check the Ground Circuit:'1. Turn the ignition switch OFF.2. Disconnecr the A {32P}connec-tor lrom the PCM.3. Check for continuity betweenthe A9 terminal and bodyground and the A22 terminaland body ground.
Repair op6n in tho wirgsbetween tho A9 ot M2 tormi-nals and G101.Rcpair poor glound {G101).
To page 14-77
l.
14-76

From page 14-76
BRN/BLK
BRN/BLK'96: BLU/RED,97, '98: GRN/BLK
Measure Powor Supply CilcuitVoltage:1. Turn the ignition switch ON (ll).
2. Measure the voltage betweenterminals A9 and A11 andbetween terminals A22 and424.
RGpair opon or short in the wire
boiween the A11 andlot Ml lor'
minals, the PGM-Fl m.in rel.Y,end the tu36 box.
Mo.sure D4 IND Voltago:1. Turn the ignition switch OFF.2. Connect the A {32P} connector
to the PCM.3. Connecl a digital multitester
to the B13 and Ag or A22 ter-minals,4. Turn the ignition switch ON (ll)
and make sure that the voltageis available for two seconds.
Chack tor opan in thc witabctwoon tha 813 larminal andth. gauge ar!.mbly. lf wi.c i!OK, chock for . frulty E indica-tor light bulb or a l.uhy g.ug.
a.!.mbly printod circuit bolrd.
Chock for loose PCM connoctort.Chock tho A/T gGat polition
switch. lI n6ca$sry, substitute aknown-good PCM and rochock.
PCM CONNECTOR A I32PI
Wire side of {emale terminals
14-77

Troubleshooting Flowchart - Brake Switch Signal
Symptom
Shift lever cannol b€ moved f.om
B pGition with the brako podrl
depr8sed.
PCM CONNECTORS
Check Brako Light Operation:Deoress the brake pedal.
Rop.ir faulty braks switch cilcuit
lsos soction 231.Are the brake lights ON?
Measure SToP SW Vohag€:1. Turn the ignition switch OFF.2. Disconnect the A l32P) and D
{l6P) connectors from thoPCM.3. Measure the voltage belweenthe D5 and A9 or A22 termi-nals with the brake Pedaldepressod.
Rap.i. opon in the wira bctn oentha 05 terminal and tho btrkclwitdr.ls there battery voltage?
. Brake switch 3ign.l is OK.. Ch6ck lor looao PCM oonnoctors.It nocassary, aubctilute a known-good PCM and r€check.. Inspoct the brake switch circuit
{s6e section 231.
Wire side of lemale terminals

Electrical Troubleshooting ('gg - 00 Models)
Troubleshooting Flowchart - Shift Control Solenoid Valve A (cont,O)
PCM CONNECTOR B {25P}
LGl (BRN/BLKI
Wire side of female terminals
rcM CONNECTORS
LGl {BBN/BLKI LG2 (BRN/BLKI
Wire side of female terminals
SHIFT CONTROL SO|'INOID VALVEA/B ASSEMBLY CONNECTOR I2PI
SH A {BLU/YELI
From page 14-89
Check lor continuity between the820 terminal and body ground,and between the 822 terminaland body ground.
Repair open in ihe wiresbetween th€ 820 and 822 termi-nals end ground {G10ll. andrepa,r poor ground {G101}.
Check Shitt Control SolenoidValve B for a Short Circuit:1. Disconnect the 2P connectorfrom the shilt control solenoidvalve A,/B assembly.2. Check lor continuity betweenthe D7 and 820 or 822 termi,nals.
R€pair short to ground in the wiiebartwe€n the D7 te.minal and theshift control solonoid valve A.
ls there continuity?
Meesuro Shift Control SolenoidValve A RGistance at the SolenoidConnector:Measure the resistance betweenthe No. 1 terminal of the shiftcontro I solenoid valve A/Bassembty connector and bodygrounct,
Repl.ce tho shift control solenoidvalve A/B rss€mblv.ls the resistance 12 25 O?
Check for open in the wirebetween the D7 termindl and theshift control 3olonoid valve A.
B t25Pt llD t16Pt
\
14-90

Troubleshooting Flowchart - Countershaft Speed Sensor
NOTE: Record all freeze data before you troubleshoot
Po$iblo Cause
. Loos€ or fsulty conneclionbetween the PCM and vehicle
hainoss' Disconnectod countersh.ft
spoed senaof connoctor. Short or opgn in counteBhaft
3Deed aensor wire. Faulty counloEhaft 3p€ed sen'
soa
COUNTERSHAFf SPEED
SENSOR CONNESTOR
Terminal side oI male terminals
FCM CONNECTOR D I16PI
rconl c
1+93
NC IBLUI
. OBD ll Scan Tool indicat6 Code
PO720.. Self-diagnosis E indicator light
blinks nin6times.
Check the countershaft sPeed
sensor installation, and check it
lor damage.
ls the countershaft speed sensor
installed properly, and not dam-
aged?
Reinstall or replace and rechock.
Measurg Counlershatt SPeed
Sgn3ol R6istance at tho Son3ol
Connector:1. Disconnect the 2P connector
from the countershaft sPeed
sensor.2, Measuro countershaft sPeed
sensor resistanca at the sensor
connector.
ls the resistance 400 - 600 O?
Chcck CounteEh.tt SPeed Sen'
sor lor a Short Circuit:1. Disconnect the D {16P) con
nector trom the PCM.2. Check lor continuity between
body ground and the D10 ter_
minal and D16 terminal indi-
vid!ally.
R6oai. short in tl|€ wi.6a bstwa€n
the D10 and D16 t.rminali end
tho countdthatt rP€od senaor.
To page 14 94
Wire side of temale terminals