1996 HONDA CIVIC electrical switch

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

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 ('99 - 00 Modelsl
Troubleshooting Flowchart - Shift Control System
NOTE: Record allfreeze data before you troubleshoot.
Po33ibl. Crus6
Frulty 3hift control ryrtom
. OBD ll Scan Tool indicrtd Codem730.. Self-dirgnosis E indicatorlight indicst€. Codo 41.
Check for Anoth€. Code:Check whether the OBD ll scantool or the E indicator lightindicate another code.
Prrf orm tho Troublc!hootingFlowch.rt for th. indicrt.dCod.l3l. R.ch.ck tor cod. m730141| .tt r troubldhootlng.
Doesthe OBD llscan tool orthe E indicator light indi-cate another code?
Test 13t, 2nd, 3rd .nd 4th ClutchPrglture:Measure the 1st, 2nd,3rd and 4thclutch pressure (see page 14-119thru 14 121).
R.prir tho hydrlulic ayrtam aan.c.3t..y lr.o p!9. lil-119 rnd1+1211.
ls each clutch pressure withinthe service limit?
Roplace Shift Control SolenoidValve Asembly. Linoar Sol.noidAssembly .nd Recheck:1. Replace the shift controlsolenoid valve A/B assembly(see page 14-106).2. Replace the linear solenoidassembly {see page 14-108}.3. Turn the ignition switch OFFand reset the PCM memory byremoving the BACK UP (7.5 A)fuse in the under-hood fuse/relay box for more than 10seconds,4. Drive the vehicle at over 12mph (20 kn/h) in 1st, 2nd, 3rdand 4th gear lo. more than 30seconds at lPll position.5. Recheck for code P0730 (41).
Doesthe OBD Ilscan tool orthe E ;ndicator light indi-cate code P0730 (41)?Th. sFtcm b OK .t this time.
NOTE: Do not continue with this lroubleshooting until the causes ot anyother OTCS have beon corrected.
I
14-100

Electrical Troubleshooting ('99 - 00 Models)
Troubleshooting Flowchart - E Indicator Light Does Not Come On
FCM CONNECTOR B (25P}
LGl {8RN/ALKI{BRN/8LK}
Wire side ol temale terminals
LGl IBNN/BLK} LG2 {BRN/BLK)
i2t5 6q
910t7
LG2
o) (o
The Pll indicator light does notcome on when the ignitionswitch is fi.st turned ON (ll). lltshould come on for about twoseconda.l
Check the Service Check Con-nector:Make sure the special tool (SCS
Service Connector) is not connect-ed to the service check connector?
ls the specialtool {SCS ServiceConnector) is not connected tothe seNice check connector.
Disconnect the special tool fromthe service check connector andr6check.
Check the Dll lndicator LightiShift to d position.
Check for loose terminal fit in thePCM connecto13. It necessary.sub3titute a known-good PCMand recheck.
Does the @ indicator lightcome on?
Check the Ground Circuit:1. Turn the ignition switch OFF.2. Disconnect the B (25P) con-nector from the PCM.3. Check for continuity betweenthe 820 terminal and bodyground, and between the 822terminal and body ground.
Repair open in the wiresbetween the B20 rnd 822 termi-nals and ground (G101), andrep.ir poor ground (G1011.
Measure Power Supply CircuitVoltage:1. Turn the ignition switch ON {ll}.2. Measure the voltage betweenterminals B1 and 822 andbetween terminals Bg and820.
Repair open or short in the wi.obetween th6 81 and/or 89 termi-nals and the PGM-FI main relav,and between th€ PGM-FI mainr€ley rnd the under-hood tus€/relay box.
To page 14''103
14-102

ElectricalTroubleshooting ('99 - 00 Modelsl
Troubleshooting Flowchart - Brake Switch Signal
PCM CONNECTORS
Wire side of female terminals
Shift lever cannot be moved tromE position with tho b.ake pedaldepressod.
Check Brake Light Operation:Depress the brake pedal.
Repair t ulty brake switch circuit{see s€ction 23}.Are the brake llghts ON?
Mea3ure STOP SW Vohage:1. Turn the ignition switch OFF.2. Disconnect the A (32P) and B{25P} connectors from thePCM,3. Measure the voltage betweenthe A32 and 820 or 822 termi-nals with the brake pedal
depressed.
Repair open in the wire betwsenthe A32 terminal rnd tho brrk6switch.
ls there battery voltage?
. Brak€ switch sign.l is OK.. Check for loose terminal fil inlhe PCM conn€ctors. lf neces-sary. substitute a known-goodPICM and recheck.. InsDect the breke 3witch circuitlsee section 231.
B {25P)
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14-104

Symptom-to-Component Chart
Electrical System -'96 - 98 Models
*: The DTC in parentheses is the code @ indicator light indicates when the Data Link Connector is connected to the HondaPGM Tester.
DTC*O Indicator
LightMILDetection ltemPage
P1790
(3)BlinksONThrottle position sensor14-242
P179'l
(4)BlinksONVehicle speed sensor14-243
P1705
(5)BlinksONAy'T gear position switch (short to groundl't 4-244
P1706
(6)OFFONA/T gear position switch {open)14-246
P0725
(11)BlinksONlgnition coil14-248
P1793
112lBlinksONManifold absolute pressure sensor14-249
P 1870(30)BlinksONShift control linear solenoid14-250
P'1873
(311BlinksONPH-PL control linear solenoid14-25'l
P1879(32)BlinksONStart clutch control linear sotenoid14-252
P1882BlinksONInhibitor solenoid14-253
P1885
(34)BlinksONDrive pulley speed sensor1l-Zb4
P1886(35)BlinksONDriven pulley speed sensor14-255
P1888
(36)BlinksONSecondary gear shaft speed sensor14-256
T to55
(37)BlinksONECM or TCM14-257
P1890
l42lBlinksONShift control system14-259
P1891
(43)BlinksONStart clutch control svstem14-260
14-23a

Symptom-to-Com ponent Chart
Electrical System -'99 - 00 Models
r: The DTc in parentheses is the code E indicator light indicates when the Data Link connector is connected to the HondaPGM Tester.
DTCTE Indicatot
LighrMILDetostion ltemPage
P1705
(5)ElinksONA,/T gear position switch (short to grouno,14-265
P1706
(6)OFFONA"/T gear position switch (open)14-26€
P1870
(30)BlinksONShift control linear solenoid14-271
P1873
(31)BlinksONPH-PL control linear solenoid14-213
P1879
t32lBlinksONStan clutch control linear solenoid
Inhibitor solenoid
14-215
P1882(33)BlinksON't 4-277
P1885
(34)BlinksONDrive pulley speed sensol't 4-279
P1886
(35)BlinksONDriven pulley speed sensor14-281
P1888
(36)BlinksONSecondary gear shaft speed sensor
Shift control system
14-283
P1890
\421BlinksON14-245
P1891
(43)BlinksONStart clutch control system14-286
14-240

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - Throttle position (Tpl Sensor
Possible Cause
. Disconnected throftle position(TPl 3ensor connoctol. Short or open in TP sensor wire. Fauhy TP sensol
TCM CONNECTORS
Wire s;de of female terminals
. OBO ll Scan Tool indic.tes CodeP1790.. Self-diagnosis E indicator lightblinks three times.
Check lor Anothar Code or MILBlinking:1. Turn the ignition switch ON 1 ).2. Check whether the OBD ll scantool indicates another code orthe Malfunction Indicator Lamp(MlL) blinks (see secrion 11).
Does the OBD ll scan tool indicateanothercode oristhe MIL blink-ing?
Repair the PGM-FI systom (3eesection 111.
Measure VREF Voltage:1. Turn the ignition switch OFF.2. Disconnect the A (26P) and B{22P} connectors lrom theTCM.3. Turn the ignition switch ON{fl).4. Measure the voltage bet\iveenthe 820 and A13 or 426 termi-nals,
Repair open or short in thc wireb,stween the Bao tcrminal rnd theECM.
ls lhere approx. 5 V?
Measure TPS Voltago:Measure the voltage between theB4 and A13 or 426 terminals.
Repail open in the wire tr€tweonthe Erl t6.minal ind the TP sen3o..ls there 0.4 - 0.6 V?
Check for loose TCM connectors.lf necessary, substitute a known-good TCM and r6check.
NOTE: Record all freeze data before you troubleshoot.
BLK
WHT/RED
A {26P1