1999 HONDA CIVIC Ignition

Electrical Troubleshooting (,96 - gg Models)
Troubleshooting Flowchart - Lock-up contror sorenoid Varve A
Po$ible Cau3e
. Disconnecled lock-up controlsolenoid valvo A connector. Short or open in lock-uD controlsolenoid valv€ A wire. Fauliy lock-up contlol solonoidvalve A
PCM CONNECTORS
Wire side of female terminals
. OBD ll Scrn Toot indicates CodeP1753.. Self-diagnosis @ indicatorlight blinks once.
Check for a Short to Powo.:1. Turn the ignition switch OFF.2. Disconnect the A (32p) and B(25P) connsgl6ps 1rq- thaPCM.3. Turn the ignition swjtch ON 0t).4, Measure the voltage betweenthe 85 and Ag or A22 terminals.
Repair shoit to power in the wirebetw€en the 85 terminal and thglock-up coDtrol tolenoid valve A.
Mea3ure Lock-up Control Sole-noid Valve A RGislance:'1. Turn the ignition switch OFF.2. Measure the resistancebetween the 85 and A9 or A22terminals.
Check lor looso PCM conn€ctoB.lf nece$.ry, substituto a known-good aolonoid valve ass€.nblv olPCM end rech6ck.
ls the resistance 12 - 25 O?
NOTE: Record allfreeze data before you troubleshoot.
A l32P)
To page'14-57

Electrical Troubleshooting ('96 - 9g Modelsl
Troubleshooting Ftowchart - Lock-up control sorenoid Varve B
Possible Cause
. Disconnected lock-up controlsolenoid valve B connector' Short or open in lock-up controlsolonoid valve B whe. Faulty lock-up control solenoidvalve B
PCM CONNECTORS
Wire side of female terminals
. OBD ll Scan Tool indicrtes CodeP1758.. Self-diagnosis E indicrtor lightblinkstwice.
Check for a Shon to Power:1. Turn the ignition switch OFF.2. Disconnect the A (32p) and B(25P) connectors from thePCM,3. Turn the ignition switch ON t).4. Measure the voltage betweenthe 84 and A9 or A22 termi-nals.
Repeir short to power in the wirebetween the 84 teiminal and thelock-up control solenoid valve B.
Moasure Lock-up Control Sole-noid Valve B Resistance:1. Turn the ignition switch OFF.2. Measure the resistancebetween the 84 and Ag orA22 terminals.
Check for loose FCM connectors,lf necessary, substitute a known-good solenoid valve assembly olP1CM and rech6ck.
ls the resistance 12 - 25 O?
NOTE: Record all freeze data before you troubleshoot.
A {32P)
To page 14-59
t-

Electrical Troubleshooting ('96 - 9g Models)
Troubleshooting Flowchart - A/T Gear position Switch (Shortl
NOTE: Record allfreeze data before you troubleshoot.
Poiriblo Caus6
. Short in A/T go.. positionawhch wira. Fauhy A/T goa. position swhch
NOTE: Code P1705 (5)the PCM receives twoinputs at the same time.
is caused whengear position
' OBD ll Scln Toot indic.tes Cod6P1705.. Sofidi.gno3b E indicato] tighrblinksfivatim...
Observo th. A/T Go.r po3ition
Indicator:1. Turn the ignition switch ON l).2. Observe the A"/T gear positionindicator, and shitt to eachposttron,
Do any indicatoG stay onwhen the shift lever is not inthose positions?
Tho sy3tem b OK.t this timo.Check th6 wilc harnari for dam-rga.
M.r.ur. ATP R Vohlge:1. Shift to all positions otherthanE.2. Nileasure the voltage betweenthe 816 and Ag or A22 tormi-nats,
Check for short in tha wirobstwacn the 816 tcrminal and th6A/T go.r porition rwitch or A/Tg..r position indicltor. It wira i3OK, ch.ck for loo!€ FCfit connoc-to13. lf nacetaary, subrtitute aknown€ood Pcllt and roa|rsck.
ls there battery voltage?
Meesur. ATP NP Vohage:1. Shift to allpositions oth€r thanEorE.2. Moasure the voltage betweenthe 825 and A9 or A22 terminats.Check for short in the wireb.tw..n th6 B:I5 torminrt and th.A/T gclr poahion indicator. o. .short in tha wirrs between th.A/T gclr position indicator rndthe A/T gerr poiition switch. lfwir.3 r.o OK, chack tor loosoPCM conn.ctorr. It n.cosarry.sub.tituto a known-good pCM.nd r.chock.M.Gur. ATP D4 Voltago:1. Shift to allpositions otherthanlD.l.2. Measure the voltage betw€enrhe 824 and Ag or A22 termi-nals.
Check tor 3hort in tho wirobc{wocn the 824 terminrl and thoA/T ge.r poiition switch. lI wileia OK, chock tor loo3o plCM con-ncctoaa. It nacossarv, sublthute aknown-good PCM and rech€ck.
ls there approx. 5 V?
PCM CONNECTORS
Wire side of female terminals
YES
To page 14-6':
14-60

Electrical Troubleshooting ('96 - gg Modelsl
Troubleshooting Flowchart - A/T Gear position Switch (Open)
. OBD ll Scan Tool indicates CodeP1706.. Self-di.gnosk E indicator tightblinks six timos.
Measure ATP 04 Voltege:1. Shiftto E position.2. Measure the voltage betweenthe 824 and A9 or A22 terminals,
ls there voltage?
Possible Causo
. Disconnected A/T gear positionswitch conn€ctor. Open in A/T gear positionswitch wire. Faulty A/T gear position switch
Wire side of female terminals
NOTE: Record all freeze data before you troubleshoot.
Moasure ATP I Voltage:1. Turn the ignition switch ON 1 ).2. Shift to E position.3. Measure the voltage betweenthe B'f6 and Ag ot A22 tetmi-nats.
Ropai. op€n in the wire betwe€nthe Bl6 terminal.nd the A/T gearposition swhch.
Measur€ ATP NP Voltage:1. Shift to E or E position.2. Measure the voltage betweenthe 825 and A9 or A22 termi,nals,
Repeir open in the wir€ betweentho B25 terminal and th6 A/T geerposition indicator or tho A/T 96.rposition 3witch.
Rcpair open in the wire betweentto 82{ to.minal and th6 A/T geatlrosition 3witch.
To page 14 63
PCM CONNECTORS
NO
1
L
+62

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - Shift Gontrol Solenoid Valve A
Po$ible Cau3e
. Disconnected shift controlsolenoid valve A connector. Short oi open in shift controlsolenoid valve A wire. Faulty shirt control solenoid
PCM CONNECTORS
' OBD ll Scan Tool indicates CodeP0753.. Sett{iagnosis E indicator lightblinks seven tim6.
Check tor a Short to Power:1. Turn the ignition switch OFF.2. Disconnect the A (32P) and B{25 Pi connectors trom thePCM.3. Turn the ignition switch ON {ll).4. Measure the voltage betweenthe 83 and A9 orA22 terminals.
Repair short to powe. in the wir6between the 83 terminal .nd theshift control solonoid valvo A.
Moa3ure Shift Control SolenoidValve A Resistanc€:1. Turn the ignition switch OFF.2, Measure the resistancebetween the 83 and A9 or A22terminals.
Ch€ck for loose PCM connectors.lf n€c6srry, subatitute a known-good solenoid valve a3,sembly orPCM end rocheck.
ls the resistance 12 - 25 0?
NOTE: Record all freeze data before you troubleshoot.
A t32Pl
To page 14-65
Wire side ol female terminals

Electrical Troubleshooting ('96 - g8 Modelsl
Troubleshooting Flowchart - Shift Control Solenoid Valve B
Possible Cause
' Disconnected shift controlsolenoid valve I connectol. Short or open in shift controlsolenoid valve B wire. Faulty shift control 30lenoidvalve B
PCM CONNECTORS
Wire side ot female terminals
. OBD ll Scan Tool indic.tes CodeP0758.. Solt-diagnosis E indicator lightblinks eight times.
Chock for a Short to Power:1. Turn the ignition swatch OFF.2. Disconnect the A (32P) and B(25P)connectors from the PCM.3. Turn the ignition switch ON (ll).4. Measure the voltage betweenthe 811 and Ag or A22 termi-nals,
Repair short to powar in the wirebotwcen the 811 torminal andthe shift control solenoid valve 8.
Measure Shift Cont.ol SolenoidValve B Resktance:1. Turn the ignition switch OFF.2, Meas u re the resistancebetween the Bll and A9 orA22 terminals.
Checl for loose PiCM connector3.lf nec€ssary, sub3titute a known-good solenoid v.lve assembly olPCM and recheck.
ls the resistance 12 - 25 O?
NOTE: Record allfreeze data before you troubleshoot,
A t32P)
To page 14 67
\

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

Troubleshooting Flowchart - Shift Control System
NOTE: Record all freeze data before vou troubleshoot.
Possible Cause
Faulty shift control system
. OBD ll Scan Tool indicates CodeP0730.. Sell-diagnosis E indicator
light indicates Code ill.
Check tor Another CoderCheck whether the OBD ll scantool or the E, indicator lightindicate another code.
Perlorm ths TroubleshoolingFlowch.rt for the indic.t.dCode(sl. Recheck tor code m730
l4'l I atter troubleshooting.
Does the oBD ll scan tool orthe E indicato'. tight indicate another code?
Test lst, 2nd, 3rd and 4th Clutch
Pressure:Measure the 1st, 2nd, 3rd and 4th
clutch pressure (see page 14119
thru 14-121).
Ropair the hydrlulic systom !snecessary {see page 14-1 19 and11-1211.
ls each clutch pressure within
the service limit?
Replace Shift Control Solenoidvalve Assembly, Linear SolenoidAssambly and Rechock:1. Replace the shift controlsolenoid valve A'/B assembly(see page 14-106).2. Replace the linear solenoidassembly lsee page 14 108).3. Turn the ignition switch OFFand reset the PCM memory byremoving the EACK UP (7.5 A)tuse in the under hood fuse/relay box for more than l0
seconds,4. Drive the vehicle at over 12mph (20 km/h) in 1st, 2nd,3rd
and 4th gear for more than 30seconds at P1 position.
5. Recheck tor code P0730 (41).
Does the OBD ll scan tool orthe Ed indicator tight indi
cate code P0730 {41)?
The swt6m is OK et this time.
NOTE: Do not continue with this troubleshooting until the causes ot any
other DTCS have been corrected.