1999 HONDA CIVIC no. 25

Electrical Troubleshooting (,96 - 9g Modelsl
Troubleshooting Flowchart - Shift Control Linear Solenoid
Possible Cause
' Disconnected 3olenoid h.rn€isconnoctor. Short or open in 3hift controllinear solenoid wire. Faulty shift control linear sole-noidSOLENOID HARNESS8P CONNECTOR
Terminal stde of male terminals
Wire side of female terminals
8LU/YEL
NOTE: Record all freeze data before you troubleshoot.
. OBD ll Scan Toot indicates CodeP1870.. Selt-dirgnosis [d indic.tor tightindicatos Code 30.
Measure Shift Control Linoar Sole-noid Resistance at the SolenoidHarness Connector:1. Disconnect the 8p connectorfrom the solenoid harness connector.2, Measu re the resistancebetlveen the No. 3 and the No.7 terminals ofthe solenoid haFness connector.
ls the resistance 3.8 - 6.8 O?
Check Shift Controt Linear Sote-noid for a Short Circuit:1. Disconnect the A (26p) con,nector from the TCM.2. Check for continuity betweenbody ground and the A3 terminal and the A16 terminalindividually.
Repair shon in tho wire6 betweonthe A3 and A16 termin.ts lnd thobody ground.
Measure Shitt Control Line.rSolenoid Resistance:1. Connect the 8P connector tothe solenoid harness connec,tor.2, Meas u re the resistancebetween the 43 and A16 ter-
Repair loose terminal oa open inthe wires between the 43 andA16 terminal3 and the solenoidharness connector.
ls the resistance 3.8 6.8 O?
Chock for loose TCM connectorc.ll necessary, substitute a known-good TCM and recheck.
BLU/WHT
GRN/YEL
TCM CONNECTOR A I26PI
GRN/YEL
ll 12l:
IriGlx
1578910111213
172t)232526
14-250

Troub|eshootingF|owchart_PH-PLControJLinearSo|enoid
NOTE| Record all treeze data before you troubleshoot
Possible cause
' Disconnected solenoid harness
connectof. Short or oPen in PH_PL control
linear solenoid wire. Faulty PH-PL control linear sole_
noidSOLENOIO HARNESS8P CONNECTOR
GRN/WHT
Terminal side of male termlnals
Wire side ol female terminals
. OBD ll Scan Tool indicates Codo
P1873.. sef-diagnosis E indicalor light
indicat6 Code 31.
Measure PH-PL Control Linear
Solenoid Resistance at the Sole_
noid Hatness Connectot:1. Disconnect the 8P connector
from the solenoid harness con-
nector,2. Measure the resistance
between the No 2 and the No.
6 terminals ofthe solenoid har
ness connector'
ls the resistance 3.8 - 6.8 0?
Check PH-PL Control Lineer
Solenoid for a Short Circuit:
1. Disconnect the A 126P) con-
nector lrom the TCM
2. Check for continuity between
body ground and the A2 ter
minal and the A15 terminal
individually.
Repair short in th€ wires
between the A2 and A15 lermi_
nals and the body glound.
Measute PH-PL Control Linear
Solenoid Resi3tance:1. Connect the 8P connector to
the solenoid harness connec-
tor,2, Meas u re the reslslance
between the ,q2 and A15 ter_
Rep.il loose tetminal or oPen in
th6 wires betwccn the A2 and
A15 lerminals and the solenoid
harness conn€ctol.
lsthe resistance 3.8-6 8 O?
Check for loose TCM connactors
lf neceasery, Substitute a known-good TCM and rechock.
PNK/BLK
TCM CONNECTOR A (26P)
oPNK/BLK
I234578I10l11213
11't5161720/,,/232526
IGRN/wHr
o
*r}l
t'T,
E[
PNK/8LK
3a5I910111213
1620232526
GRN/WHT
14-251

Electrical Troubleshooting ('96 - gg Modelsl
Troubleshooting Flowchart - start clutch control Linear solenoid
NOTE: Record all freeze data before you t.oubleshoot.
Po$iblo C.u.o
' Di3aonnoctod solanoid harncatconnactol. Short or opon in start clutchcontrol linoar tolanoid wira. Faulty ttart clutch control lino.rsolanoid
SOLENOID HARNESS8P CONNECTOR
Terminal side of male terminals
Wire side of female terminals
. OBO ll Scan Tool indicatG CodeP1879.. Self-dilgno.is E indicator lightindiclt$ Code 32.
Me.suro Sta.t Clutch ControlLinear Solenoid Rosirtrnco st th.Solenoid Hrrn6rs Connecto.:1. Disconnect the 8P connectorfrom the solenoid harness con-nector.2, Measure the resistancebetween the No. 4 and the No.8 terminals otthe solenoid har-ness connectot.
ls the resistance 3.8 - 6.8 0?
Chock Start Clutch Control Lin-oar Solenoid tor a Short Circuit:1. Disconnect the A (26p) con,nector from the TcM.2. Check lor continuity betweenbody ground and the A1 ter-rninal and lhe Al il terminalindividually.
Raprir 3hort in tha wira3b.ftvcen tho A1 .nd Atil t .mi.n.l. .nd thr body ground.
Measure Stan Clutch Cont.olLineer Solenoid F6aist.ncei1. Connect the 8P connector tothe solenoid harness connec-tor.2. Meas u re the resistancebetween the 41 and Al4 ter-minals,
Rcplir loose tcrminal or oDcn inthG wiras b.tween the Al rndAla torminal3 rnd tha 3olanoidhamaas connactor.
ls the resistance 3.8- 6.8 O?
Check for loose TCM connecto.s.lf necessary, substitute a known-good TCM and iecheck.
YEL
PNK/BLU
TCM CONNECTOR A I26P}
-{r-
E
PNK/BLU
23a51I910ll1213
a15t61'20a252G
YEL
14-252

Troubleshooting Flowchart - Inhibitor Solenoid
NOTE: Record all treeze data betore you troubleshoot
Po$ibls Cause
. Dbconnected solenoid hatness
connedor' Short or opon in inhibitor sole'
noid wire. Faultv inhibitor solenoid
SOLENOID HARNESS8P CONNECTOR
Terminal side of male terminals
. OBD ll Scan Tool indic.td Code
P1882.. Selt-di.gnGis E indicator lighl
indic.tos Code 33.
Mea3ure Inhibhor Solenoid Resid-
ance at the sol€noid Harness
Connector:1. Disconnect the 8P connector
from the solenoid harness
connector.2. Measure the reslstance
betlveen the No 5 terminal of
the solenoid harness connec-
tor and body ground.
ls the resistance 11.7 - 21 0 0?
Check Inhibitor Solenoid lor a
Short Circuii:1. Disconnect the B (22P) con-
nector from the TCM.
2. Check for continuity between
the B1 terminal and bodygro!no.
Repair rhort in the wire ltetwegn
the 81 dnd the bodY ground.
Mea$rr€ Inhibitor Solenoid ResBt'
anoe:1. Connect the 8P connector to
the solenoid harness connec_
IOr.2. Measure the resistance
between the Bl and bodyground.
Reoair loose terminal or open in
the wire betwean the 81 and the
solenoid hame3s connector'ls the resistance 11.7 - 21.0 O?
Ch6ck for loose TCM connectors.
ll necessary, substhule a known_good TCM and techeck.
Wire side of female terminals
14-253

Ftom page 14 262
ls there battery voltage?
Measure Powet SUPPIY Ci.cuit
Voltage:1. Turnthe ignition switch ON (ll)
2. Measure the voltage between
terminals A12 and A13 and
between terminals A25 and
426.
Repair open or short in the wire
between the A'12 andlor Ms ler-
minrls and the under-dash fuse
DOX,
Measure D IND Voltage:1. Turn the ignition switch OFF
2. connect the A (26P) connec
tor to the TcM.
3. Connect a digkal multitester
to the A20 and A'13 or A26 ter
minals.4. Turn the ignition switch ON (ll),
and make sure that the voltage
is available for two seconds.
Check tor opon in the wire
between the A20 l6rminal and
the gaug€ assembly. It the wite
is OK, check tor a faultY ipl indi-
calor light bulb or a faulty gauge
assembly prir ed circuit boatd.
Check D INO for an Shott Circuit:1. Turn the ignition switch OFF
2. Disconnect the A (26P) con-
nector from the TCM.
3. Check for continuity between
the A20 terminal and the No. I
terminal of the gauge assem-bly connector (see section 23).
Bepair open in the wire between
the A20 terminal and the gauge
assembly.
Check tor looso TCM connecto.s.
Check the A/T ge.r Positionswitch. lf nec6ssary, substitute a
known-good TCM and r€check
BLK/WHTI
r
2a710111213
14t5161720232526
BLK/WHT
A
II
TCM CONNECTOR A I26P)
Wire side of female terminals
TCM CONNECTOR A (25P}
BLK
BLK
GRN/BLK
12a58910111213
1l15161720232526
o
GRN/BLK
GAUGE ASSEMBLY14P CONNECTOR
a5
78910111214
GRN/BLK
Wire side of female terminals

ElectricalTroubleshooting ('99 - 00 Models)
Troubleshooting Flowchart - Shift Gontrol Linear Solenoid (cont'dl
SOI."ENOID HARNESS 8P CONNECTOR
Terminal side of male terminals
PCM CONNECTOR D {16P}
SH LSM IGRN/YELI SH LSP {BLU/WHTI
Wire side oI temale terminals
SH LSM {GRN/YELI SH LSP IALU/WHT}
tuom page 14 271
Measure Shift Control LinearSolenoid R6sistance at the Sole-noid Hrrness Connector:1. Disconnect the solenoid harness 8P connector.2. Measure the resistancebetween the No. 3 and No- 7terminals oI the solenoid harness 8P connector,
ls the resistance 3.8 - 6.8 o?
Check Shift Control Lin€ar Sole-noid tor a Short Circuit:Check for continuity between thebody ground and the D3 terminaland D4 terminal individually.
Rep.ir short in th€ wir€ tr€twlrenihe D3 and D4 torminab .nd theshift cont.ol line.. solenoid.
Measure Shitt Conirol LineerSolenoid Resbtance:1. Connect the solenoid harness8P connector.2. Measure the resistancebetween the D3 and D4 termi-nats.
Repeir loose ierminrl or open inthe wire3 between tho D3 and D4terminals end the shift controllinear solenoid.
ls the resistance 3.8 - 6.8 O?
Check tor loose terminal fit in thePCM connector3, It necessary,substitute a known-good PCMand recheck.
SH LSP
SH LSM
14-272

Electrical Troubleshooting ('99 - 00 Models)
Troubleshooting Flowchart - PH-PL Gontrol Linear Solenoid (cont'd)
From page l4-273
SOLENOID HARNESS 8P CONNECTOR
Terminal side of male terminals
PCM CONNECTOR B (25PI
Wire side of female terminals
Mea3ure PH-PL Control LinearSolenoid Rosistance at lhe Sole-noid Harness Connector:1. Disconnect the solenoid har-ness 8P connector.2. Measu re the resistancebetween the No. 2 and No. 6terminals oI the solenoid harness 8P connector.
ls the resistance 3.8 - 6.8 O?
Check PH-PL Control Linear Sole-noid lor a Short Circuit:Check for continuity between thebody ground and the 88 terminaland 817 terminal individually.
Rep.i. 3hort in the wiro bsh^,eenlhc 88 and 817 terminals and thePH-PL cont.ol linear solenoid.
Measure PH-PL Control LinearSolenoid Resistance:1. Connect the solenoid harness8P connector,2. Measure the resistancebetween the 88 and 817 termi-nals.
Repair loose te.minal or open inthe wires between the 88 rnd817 te.minlb .nd the PH-PL con-trol linear solenoid.
ls the resistance 3.8-6.8 O?
Check lor loose ierminal fit in thePCM connectoTa. lf necessary,substitute a known-good PCM.nd recheck.
HLC LSP
HLC LSM
HLC I.SM (PNK/BLK)
HLC LSM {PNK/BLKI
-j-i8lisli.((
35/11
Il0A/'.n20
HLC LSP IGRN/WHT}
14-274

Electrical Troubleshooting ('gg - 00 Modelsl
Troubleshooting Flowchart - start clutch control Linear solenoid (cont,d)
Frcm page 14.275
SOLENOID HARNESS 8P CONNECTOR
T6rminal side of male terminals
Wire side of f6male terminals
SC LSM(PNK/BLU)
Measurs Start Clutch ControlLinear Solenoid R€aistance at thsSolenoid Harne€s Connector:1. Disconnect the solenoid har-ness 8P connector.2, M easu re the resistancebetween the No. 4 and No. Iterminals of the solenoid har-ness 8P connector,
ls the resistance 3.8- 6.8 0?
Check Start Clutch Control Line.rSolenoid tor a Short Circuit:Check for continuity between thobody ground and the 818 termi-nal and B2Sterminal individually.
R€p.ir short in th. wire bctw.onth6 818 and 825 termin.lr rndthe 3hift cont ol linc.r solonoid.
Measure Start Clutch ControlLinear Solenoid R6ist.nco:1. Connect the solenoid harness8P conn€clor.2. Measure the resistancebetlveen the 818 and 825 ter,mtnats,
Raprir looa. t€.minal or opan intha wirars lratwe.n the B18 and825 terminal3 and tha st!rtclutch control linoar 3olanoid,
ls the resistance 3.8-6.8 O?
Check to. loose tarminal fit in thoPCM connactors. It necessary,substitute a known-good PCMand recheck.
SC LSP
SC LSM
14-276