1998 HONDA CIVIC Ignition wire

Emission Control System
Ch€ck the EVAP purge controlsolenoid valv6:1. Disconnect the 2P connectorfrom the EVAP purge controlsolenoid valve.2. Ouickly raise the engine speedto 3,000 rpm.
Insped vacuum hose routing.lf OK. roplace the EVAP purge
control solonoid valve.
Chock tor r short in the wir€
{PCS line):1. Turn the ignition switch OFF.2. Disconnect ECM/PCM connec-tor A (32P).
3- Check tor continuity betweenthe EVAP purge control sole-noid valve 2P connector termi-nal No. 2 and body ground.
Check the vacuum when hot:1. Turn the ignition switch OFF.2. Block the rear wheels and setthe parking brake.3. Jack up the lront of the vehi-cle and support it with safetystands.4. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutrali until
the radiator fan comes on, thenlet it idle.5. Check for vacuum at the vac-uum hose with transmissionin gear (A/T in E position,
lvl/T in 1st gear) after startingthe engine.6. Ouickly raise the engine speedto 3,000 rpm.
Rooair shoft in the wire belwegnthe EVAP pulg6 control solenoidvalvs and tho ECM/PCM {A61.ls there continuity?
Substitute a known-good ECM/PCM and rech6ck. lt 3ymptom/indicrtion 90e3 rway, r6plac6 th€o.iginal ECM/FCM.
Check th€ EVAP purge controlsolenoid valve:1. Turn the;gnition switch OFF.2. Disconnect the 2P connectorfrom the EVAP purge controlsolenoid valve and warm itup to normal operating tem-perature again if necessary.3. Start the engine.4- At the harness side, measurevoltage between the EVAPpurge control solenoid valve2P connector terminal No. 1and No.2 with the transmis-sion in gear {A/T in E posi-tion, M/T in lst geari.
In3pect vacuum hoae routing.lf OK, repl.ce EVAP purge con-trol solonoid valve.ls there battery voltage?
Chock for an open in the wire(lG1 lina):At the harnoss side, measure volt-age beNveen the EVAP purge con-trol solenoid valve 2P connectorterminal No. 1 and body ground.
Repair open in the wire b€lwe€nEVAP purge contrl 3olenoid valv6and lhe No. 15 ALTERNATOR SPSENSOR 17.5 A, fu3e.
ls there battery voltage?
Evaporative Emission (EVAPI Controls (cont'dl
(From page 11-289)
(To page 11-291)
11-290
IJ
EVAP PURGE CONTROL SOLENOIDVALVE 2P CONNECTOR IC114I
PCS
IRED/YEL)
temaletermrnars
of
PCS(RED/YEL)
tGlIBLK/YEL)
{To page 11 291)

IECM/PCM CONNECTOR
I
EVAP TWO WAYVALVE
Wire side oftemaleterminals
FUELTANK
(cont'd)
11-291
tn
VACUUMPUMP/GAUGE,0 - 30 in Hs
A973X - 041 -
xxxxx
(From page l1 290)
Check the EVAP two way valve:
See EVAP two way valve test (see
page 11-295).
Roplace the EVAP two way valve
Check the EVAP bypa$ solenoid
1. Remove the fuel tank (see
page 11-242J.2. LiIt up the fuel tank with a
transmission iack, and connect
the fuel tank pressure sensor
sub harness 6P connector to
the access panel side connec_
tor,3. Disconnect the vacuum hosefrom the EVAP two way valveand connect a vacuum PumPto the hose,4. Turn the ignition switch ON (ll)
5. Apply vacuum to the hose.
(To page 11 292)
(From page 11-290)
Check for an open in the wire
{PCS lin6):1. Turn the ignition switch OFF
2. Reconnect the 2P connector to
the EVAP purge control sole-
3. Turn the ignition switch ON {ll).4. Measu re voltage betweenEClr/PCM connector terminals
A6 and 82.
Ropair open in the wire betweenthe EVAP purge Gontrol solenoidvrlve and th6 ECM/PCM lA6lls there battery voltage?
Substitute a known-good ECM/
PCM rnd re{61. lf symptom/indi'
cation goes away, rePlace the
oiiginal ECM/PCM.

Emission Control System
Evaporative Emission (EVAPI Gontrols (cont'd)EVAP BYPASSSOLENOID VALVEY
(From page l1'291)
Check for a short in the wire{2WBS linel:Disconnect the 2P connector {romthe EVAP bypass solenoid valve.
Does the valve hold vacuum?
Repair short in the wire betweenEVAP bypass solenoid velve andrhe ECM/PCM {A3).
Ooes the valve hold vacuum?
Check the EVAP bvpr$ 3olenoid
1. Turn the ignition switch OFF.2. Connect ECM/PCM connectorterminal A3 and body groundwith a jumper wire.3. Turn the ignition switch ON (ll).Ch€ck lor an op.n in the wirellcl linol:1. Turn the ignition switch OFF.2. Disconnect the 2P connectorfrom the EVAP bypass sole-noid valve.3. Turn the ignition switch ON (lll.
4, Measure voltage between theEVAP bypass solenoid valve2P connector terminal No. 1and body ground.
Does the valve hold vacuum?
Repair open in the wir6 b€tw€€nEVAP purg6 control 3olanoid valveand the No. 15 ALTERNATOR SPSENSOR {7.5 A) Iuse.
Wire side ol female terminals
EVAP SYPASS SOLENOIOVALVE 2P CONNECTOR IC793}
tG1{BLK/WHT)
Wire side offemaleterminals
{To page 11 293)
11-292
(To page 11 293i

I
\
\l
(From page 11-292i
Chock the tollowing parts tolleakage to aimosphero, and
ropaii or replaco if necess6.y:. fuel fill cap. fuel tank. fuel v.por pipe. EVAP two way valve. EVAP bypas solonoid valve. tuel tank pre3suae sen3or. EVAP control cankter. EVAP control canisier veni3hut valve. EVAP purge conttol solenoid
. ORVR vent 3hut valve. ORVB vaoor recirculation valve. vacuum hoses tnd connactions
(From page 11 292)
Check toi an opon in the wiro(2wBS linol:1. Turn the ignition switch OFF.2. Reconnect the 2P connectorto the EVAP bypass solenoid
3. Turn the ignition switch ON (ll).
4. Measure voltage betweenECM/PCM connector terminals43 and 82.
Reprir opan in tho wire be(wean
th. EVAP byp.is solonoid valve
rnd rhe EcM/PcM (A31.ls there baftery voltage?
(cont'd)
11-293

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