1996 HONDA CIVIC electrical switch

Electrical Troubleshooting ('96 - 9g Models)
Troubleshooting Flowchart - A/T Gear position Switch (Short)
NOTE: Record all freeze data before you troubleshoot.
Posrible Cause
. Short in A/T go.r positionswitch wire. Faulty A/T g€ar polition switch
NOTE: Code P1705(5) is caused whenthe TCM receives two gear positionInputs at the same time.
TCM CONNECTOR A {26P}
Wire side of female terminals
To page 14-245
. OBD ll Scan Tool indicates CodeP1705.. Seif-diagnosis @ indicator lightblinksfive times.
Obsorve the A/T gear positionindicetor:1. Turn the ignition switch ON1[).2. Observe tho Ay'T gear positionindicator, and shift to eachposition separately.
Th6 lyrtcm i3 OK at thi. tima.Check the wi.s hamels for drm.ag9.
Do any jndicators stay on when thesh;ft lever is not in that position?
Measure ATP R Vohage:1. Shift to all positions other thanE.2. Measure the voltage betweenthe 411 and A13 or A26 termi-nats.
Check for sho.t in tho wireb€twoon the Al1 t rminaland th6A/l ge.r polhion switch or A/Tgear position indicstor. lf wilo isOK check for loos6 TCM conncc-tora. It nocassery, subrtitute aknown-good TCM and r€chsck.
ls there approx. 10 V?
Measure ATP NP Volt.ge:1. Shift to all positions otherthan @ or @.2. Measure the voltage betweenthe A10 and 413 or 426 termi-nals,Ch.ck tor 3hort in th€ wircb€twe€n thc Al0 termin.l andthe A/T 96r. porition indicrtor,or a short in the wilea b?twecntho A/T gerr porition indic.to.and the A/T geer positionswitch. It wires ar6 OK, chsck forloose TCM conn.clols. ll nccNe3-sa.y, substituto a known-goodTCM rnd locheck.
ls there approx. 10 V?
Measure ATP O Vohage:1. Shift to all positions otherthanE,2. Measure the voltage betweenthe Ag and A13 or 426 terminals.
Checl tor short in the wirelr€tweon tho A9 terminal and theA/T g6a. position 3witch. lf wireb OK. check tor loos€ TCM con-nectors. lf nocelsary, substhute aknown-good TCM and rechack.
ls there approx. '10 V?
14-244
b

Electrical Troubleshooting (,96 - 9g Models)
Troubleshooting Flowchart - A/T Gear position Switch (Openf
NOTE: Record all freeze data before you troubleshoot.
Pos.ribls Cause
. Disconnocted A/T gear positionswitch connector. Open in A/T gear position switch
. Faulty A/T gear position switch
TCM CONNECTOR A I26PI
Wire side of female terminals
. OBD ll Scan Toot indicat* CodeP1706,. Solf-diagnosis E indicator tightblinb six times.
Measule ATP R Volt.gei1. Turn the ignition switch ON l).2. Shifi to E position.3. Measure the voltage betweenthe A11 and 413 or ,426 termi-nals.
Repair open in tho wire betwoenlhe A11 terminal and the A/Tgoar po3ition switch.
Measure ATP NP Volt.gei1. Shifrto E orE position.2. Measure the voltage betlveenthe A10 and A13 or 426 terminals.
Repair open in the wiro betweenthe A10 terminal .nd tho A/Tgea. poshion swhch.
Measure ATP D Vohage:1. Shift to E position.2. Measure the voltage betweenthe Ag and A'13 or 426 termi-
Repair open in the wire lretweenthe A9 terminel and the A/T gearposition 3witch.
To page 14-Z4j
14-246

Electrical Troubleshooting ('96 - 98 Models)
Troubleshooting Flowchart - TMA and TMB Sigrrals (cont,d)
TCM CONNECTOR 8 {22P}
Wire side of female terminals
PNK
PNK
PNK
from page 14 257
Check TMB Wire Continuity:1. Turn the ignirion switch OFF.2. Disconnect the C (31P) connec,tor from the ECM, and the I(22P) connector from the TCM.3. Check for continuity betweenthe 86 terminal ol the TCMand the C30 terminal of theECM,
Repair open in the wire betwe€nrhe TcM and the EcM.
Check TMB Wire tor a Short Cir-cuit:Check for continuity between the86 terminal ot the TCM or theC30 terminal ot the ECM andbody ground.
ls there continuity?
Check the TCM:1. Reconnect the B (22p) con-nector to the TCM, and the C(31P) connector to the ECM.2. Turn the ignition switch ON (ll).3. Measure the voltage betweenthe B6 terminat of the TCMand body ground.
ls there approx. S V?
Check for loose TCM connoctors.lf necessary, substitute e lnown-good TCM and recheck.
o
2I67t8I10
12131416171820
ECM CONNECTOR C 131P}
2a5678I10
ll1213la17118
/l/l )/)/l/l )aol'ol/
PNK
o
2456,8910
1213111516111E20
2157810
1213141516171820
It

Electrical Troubleshooting ('96 - 98 Models)
Troubleshooting Flowchart - Start Clutch Control System
NOTE: Record all freeze data before you troubleshoot.
Po$ible Ceuaa
Frulty start clutch cont.ol 3ys-tem
14-260
OBO ll Scan Tool indic.le3 Cod6P1891.Solt-diagnosis E indicator lightindicates Code (1.
Check for Another Codo:Check whether the @ indicatorlight indicates another code.
Poiform tho TroublcahootlngFlowchrrt lor the indicat.dCode(sl.
ls the E indicator light indi-cate another code?
Test Strrt Clutch Oper.tion:1. Turn the ignition switch OFF.2. Disconnect the 8P connectorfrom the solenoid harness con,nector.3. Start the engine, and shift toE position.4. Check whether the vehiclemoves.
Rcplaca th. strrt dudt r$amt ly.
Check Creeping Spe€d:1. Turn the ignition switch OFF.2. Reconnect the 8P connector tothe solenoid harness connec-tor,3. Start the engin6, and shift toE position.4. Check whether the vehiclecreeps, and chock the creep-Ing speed.
Does the vehicle move and isthe creeping speed approx.3mph (5 km/h)?
To page 14-261
E

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - Pl Indicator Light Does Not Gome On
TCM CONNECTOR A {26P)
BLI
l-I
123a589101t12nl
1a151617202325rt
o
8LK
Wire side of female terminals
The E Indicator light does notcome on when the ignition switchis tirst turned ON {ll). {lt shouldcome on for aboul two s€conds,)
Chock the Service Check Connec-lot:Make sure the special tool (SCS
Service Connector) is not connected to the seryice check connector,
ls the special tool (SCS ServiceConnector) connected to the ser-vice check connector?
Disconn€ct the sDecial tool fromthe seruice check connector andrecheck.
Check the E Indicator Light:Shift to [5] oosition.
Check fo. loose TCM connectors.lf neceasary, substitute a known-good TCM .nd rochock.
Does the E indicator lightcome on?
Ch€ck th6 Ground Circuit:1. Turn the ignition switch OFF.2. Disconnect the A 126P) con-nector from the TCM.3. Check tor continuity betweenthe A13 terminal and bodyground and the 426 terminaland body ground.
.Repair open in the wiresbetwoon lhe A13 or A26 termi-nel3 and G101.. Repai. poor ground {G1011.
To page 14-263
14-262
>.

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - lq Indicator Light On Constantly
TCM CONNECTOR A {26PI
Wire side of female terminals
YEL
The E indic.tor light is on con-stantly {not blinking} whoneverthe ignilion switch is ON llll.
Measure D INO Voltage:1. Turn the ignition switch OFF.2. Disconnect the A (26P) con'nector from the TCM.3. Turn the ignition switch ON (ll).4, Measure the voltage betweenthe A20 terminal and bodyground,
Repeir 3hort to power in thc wirebetween tho A20 terminal andihe gauge ass€mbly.
Measure ATP DVohage:1. Turn the ignition switch OFF.2. Connect the A (26P) connec-tor to the TCM.3. Turn the ignition switch ON (ll).4. Shift to any position other thanE,5. Measure the voltage betweenthe A9 terminal and bodygrou nd.
Check tor a short to ground onthe wire. ll wire is OK, .epl.cethe A/T gear position indic.tor.
2347810ll1213
1a15161720232526
GRN/BLK
123a5789101t1213
1at5161720a2526
14-264
-

Electrical Troubleshooting ('99 - 00 Models)
Troubleshooting Flowchart - A/T Gear Position Switch (Short)
NOTE: Record all freeze data before you troubleshoot.
Po3sible Cause
. Short in A/T gear po3ition 3witch
. F.ulty A/T ge6r Position switch
NOTE: Code P1705(5) is caused when
the PCM received two gear Positioninputs at the same time.
PCM CONNECTORS
LGl (BRN/8LKI LG2 (BRN/8LKI
Wire side of female terminals
(cont'd)
14-265
B t25Pt llO(16P1
. oBD ll scln lool indicats code
P't705.. Self-diagnosb E indicator light
blinks fivetim€s.
Obseive tho A/T Gear Polition
lndicetor:1. Turn the ignition switch ON (ll).
2. Observe the A,/T gear positaon
indicator, and shift oach Posi-tion separately.
Tho ry3t6m is OK at this tims.
Check th€ wiro hsrno!! tor
damage.
Does any indicator stay on
when the shift lever is not an
that position?
M.Furo ATP R Vohtge:1. Shift to all positions other than
E.2. Measure the voltage between
the D6 and 820 or 822 termi'
nals,
Chock for lhort in tho wit€
betwe€n the D6 telminal and thg
A/T ge.r position 3witch or A/T
gear po3ition indicttoi, !nd
chcck for open in the witgs
botwo€n the 820 lnd 822 tetmi_n.ls and body g.ound (G1011. F
wiro3 ere OK, check tor loo3o ter'
minal fit in the PrCM connoctors.ll n6c€3sary, 3ubstitute a known-good PCM and rochock.
ls there approx. 10 V?
To page 14 266

Electrical Troubleshooting ('99 - 00 Models)
Troubf eshooting Flowcharl - AIT Gear Position Switch {Short) {cont,d}
From page 14 265
LGl IBRN/BLK) LG2 {BRN/BLK}
Wire side of female terminals
A t32Pl jl B {25P)
ATP D (YEL)
LG1 {BRN/ALKILG2 IBRN/BLK)
Measure ATP NP Voltage:'1. Shift to all positions other thanEorI2. Measure the voltage betweenthe A9 and 820 or 922 te(mi-nals.
Check for short in the wirebetwoen ths Ag terminal and theA/T gerr position switch, .nd inthe E .nd E position 3ignalwiros botween the A/T gearposition indic.tor and the A/Tgear positaon switch. lf wircs .reOK, check tor loose terminal tit inthe PCM connectols. lf n€ces-3ary, substitute a known-goodPCM and rocheck.
ls there approx. 10 V?
Me.sure ATP D Vohago:1. Shift to all positions otherthan E.2. Measure the voltage betweenthe 47 and 820 ot 822 tet-r'i-nals,
Check tor 3hort in lhe wireb€twaen thc A7 terminel and theA/T g6ar position switch. lf wir.sare OK, ch.rck to. loose terminalfit in th6 PCM connectoF. lf nsc-ossary. substhute a known-goodPCM and ..check.
ls there approx. 10 V?
a l32Pl ll B (25P1
To page 14-267
14-266