1999 HONDA CIVIC PCM CONNECTOR A

ElectricalTroubleshooting ('gg - 00 Models)
Troubleshooting Flowchart - A/T Gear position Switch (Short) (cont,dl
LGl (BRN/BLK}
FCM CONNECTORS
B {25P)D l16Pl
12[Ll81235
9101/113/ 151/)11789t0112,/ 20
ATP 2 {BLUI
Wire side of female terminals
Measule ATP 2 Vohage:1. Shift to all positions other thanl
2. Measure the voltage betweenthe D14 and 820 or 822 termi-nals,
Check for short in the wirebetween the D14 terminal andthe A/T gear position switch orA/T ge.r position indicator. Itwires aae OK, check loa loose ter-minal th in ths PCM connectors. llnecessary, substitute a known-good FCM and recheck.
ls there battery voltage?
Ch6ck for loose terminal fit in thePCM connoctors. lf necessary,substitute a known-good PCMand recheck.
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14-86

Troubleshooting Flowchart - A/T Gear Position Switch (Open)
NOTE: Record allfreeze data before you troubleshoot.
Po$ible Cause
. Disconnectod A/T goar position
switch conngdor. Open in A/T gear position
switch wire. Fautty Aft gear poshion switch
PCM CONNECTORS
Wire side of lemaleterminals
D (16P1
GRNI
B (25Pt llDtl6Pl
IARN/BLK) LG2IBRN/BLKI
2{6,|235
I't011/t5l/18912
ATP NP (LT
. OBO ll Scan Tool indicatd CodcP1706.' Sslf-diagnosis E indicatorlight blink3 six tim6.
Test the Ay'T gear position switch(see section 23).
Moasure ATP R Volt.ge:'1. Turn the ignition switch ON ('l).
2. Shift to E position.
3. Measure the voltage between
the D6 and 820 ot 822 termi'nals.
Repoir opon in the wire bitween
the D6 torminll and the A/T go.r
position switch.
Measuro ATP NP Volt ge:
1. Shift to E or E position.
2. Measlre the voltage betweenthe D13 and 820 or 822 termi-nals,
Ropair op€n in thc wire betwoonthe D13 terminrl and the A/Tge.r position switch.
LG1 {BBN/BLKI
Io page 14-88
(cont'd)

Electrical Troubleshooting ('gg - 00 Models)
Troubleshooting Flowchart - A/T Gear position Switch Open {cont,d)
PCM CONNECTORS
B l2sPlD {16P)
124156I
91011)./t5l/11189112
zo ztzzl l//l hsr),41
f ]_c;l
j r-cz tgaNlelxr -ATP D4
Wire side of lemale terminals
(YEL}LGl {BRN/BI.KI
I.G1 IERN/BLKI
B (25P1
LGl IBRN/BLKI
D {16P}
From page 14-87
Moalure ATP 04 Vohago:1. Shift to pll position.2. Measure the voltage betweenthe Dg and 820 or 822 terminals.
Repair opon in the wire betweonthe lrg terminal and the A/T goatposhion switch.
Measure ATP D3 Vohage:1. Shift to l& position.2. Measure the voltage betweenthe D8 and 820 or 822 termi-nats.
Reprir opcn in the wirc b?twoenthe D8 terminrl and tho A/T goarDosition twitch.
Mersurc ATP 2 Voltage:1. Shift to E position.2. Measure the voltage betweenthe Dl4 and 820 or 822 termi-nals,
Reprir opon in the wire betweontho Dl4 te.minal rnd the A/Tgo.r position switch.
Ch6ck tor loose terminal tit in thePCM connectors. ll necossery,subslitute . known-good pCM
and recheck.
LG2IBRN/BLKI
I25l l6l/8
91011)/Itsln78912
ATP 2 IBLUI
t..
14-88

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
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14-90

Troubleshooting Flowchart - Shift ControtSolenoid Valve B
NOTE: Record all freeze data before you troubleshoot.
Possiblg Cause
. Disconnectgd ihilt control
solenoid valve A/B conneciotr Short or oDen in shift conlrol
3olgnoid vrlve B wito. Faulty 3hift control solenoid
velve B. Op€n in VB SOL wirercM CONNECTORS
LGlIBRN/BLKI LG2IBRN/BLK)
Wire side of {emale terminals
LGi (BRi|/BLKILG2 IBRN/8LK)
To page 14-92
(cont'd)
14-91
. OBD ll Scan Tool indic.l6 Code
P0758.' Self-diagnosb El indicator light
blinks eighl tim6.
Check tor a Shortto Power:
1. Turn the ignition switch OFF
2. Disconnect the B (25P) and D(16P) connectors from the
PCM.3. Turn the ignition switch ON (lli.
4. Measure the voltage between
the D2 and 820 or 822 termi
nals,
Repaft 3hon to Powor in the wir€
b€tirvoon the D2 termin.l and the
3hift control solenoid valve B.
M€asure Shift Control SolenoidValve B R6isttnce:1. Turn the ignition switch OFF
2. Measure the resistance
between the D2 and 820 or
822 terminals.
ls the resistance 12 - 25 O?
Me.sure VB SOL Vohage:1. Turn the ignition switch ON (ll).
2. Measure the voltage betweenthe D5 and 820 or 822 termi'
nars.
Check lol blown No 15 {7.5 Al
fuse in the under-d.sh luae/rolav
box. ll the fuse is OK, repair open
in ihe wire between tho D5 ter-
minal and the under'dash fus€/relav box.
ls there battery voltage?
Check for loo3e terminal fit in the
PCM connectols. lf necossarY,
substitute a known_good PCM
and rocheck,
B (25Pt - I lD {16P)
B {25P1 D (t6Pl

Electrical Troubleshoot:ng ('gg - 00 Models)
Troubleshooting Flowchart - Shift Control Solenoid Valve B (cont,dl
PCM CONNECTOR A {25PI
LGl (BRN/BLK)
IBRN/BLKI LG2IBRN/BLK)
Wire side of temale terminals
Wire sid€ ot female terminals
FCM CONNECTORS
SHIFT @NTROL SOENOID VALVEA/A ASSEMBLY CONNECTOR (2PI
.-_
1)2-.T-
I sn e tcanlwxrt
(o
YI
Terminal side oI male terminals
Check for continuity between the820 terminal and body ground,and between the 822 terminaland body ground.
Ropair opan in the wirgsb.twocn the 820 rnd 822 te.mi,n.ls and ground lG10t), and..p.ir poor ground lG10t).
Check Shift Control Sol.noidVrlve B tor a Short Ci.cuit:1. Disconnect the 2P connectorfrom the shift control solenoidvalve A/B assembly.2. Check for continuity betweenthe D2 and 820 or 822 termi-nals.
Repair 3hort to ground in tho wirebotw.en tha 02 torminsl and theshift com.ol rolonoid v.lv. B.
Meaiuro Shift Cont.ol SolonoidVrlve B Raailtrnca at the SolonoidConn€c,toa:Messure the r€sistance belweenthe No. 2 terminal of the 6hiftcontrol solenoid valve A/Bassembly connector and bodyground.
R.pl.co th. 3hift control lolenoidv!lv. A/8.lsombly.ls the resistance 12 - 25 O?
Chack for open in the wi.ebetwoon th€ D2 termin.l and the3hift control lolanoid valv6 8.
B (25P1 - llDt
From page'14-91
SH B (GRN/WHTI
\
14-92

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

Electrical Troubleshooting ('gg - 00 Modelsl
From page 14-93
Measure CounteJahaft SpeedSensor Circuit tor an Open:1. Connect the countershaltspeed sensor connector,2. Measure the resistancebetween the Dl0 and D16 termtnats.
Roptir loo.€ t6.minal or opan inth6 wir€! betwo€n lho D10 lndD16 t.rmina13 and the count.r-shatt apaad aaNor.
ls the resistance 400 - 600 O?
Check for loose t.rminal frt in thePCM connectors. It necalsary,3ubstitute a known-good PCMand recheck.
Troubleshooting Flowchart - Countershaft Speed Sensor (cont,d)
PCM CONNECTOR D I16PI
Wire side of female terminals
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14-94