1994 HONDA INTEGRA Workshop Manual

S. d.gno.b lql indic.to. lightbllnkr tour tlm...
R.lor to Soctlon 23 for vohiclerpood lonsoi {vSSl to!t.
Shift t.nsmisiion to A position.
Ch6ck to. shoft or opon in OFilwlro b€twoen tho .)9 t6tminsl andrho VSS. lf wiro is OK, ch€ck thoVSS lsoo soction 231.
Doss lhe voltage O V and ap-p.ox. 10 V appe.r alternately?
Ch.d( tor loo.. TCM co.!n.cto.r.ll nacaaalay, lubrtituta ! known_geod TCM and t chock.
Possible Caus6
. Disconnectsd vehicle speedsensor {VSS} connector. Short or open in VSS wire. Faulty VSS
Disconn6ct the 26Pand 22P con-n.ctors trom th€ TCM.Connect ths Tgst Harnoas "A"
8nd "O" connectors to tho wireharnsss only, not to the TCM (see
page 1+49).
Turn the ignilion switch ON.
a Mak€ sure lifts,lacks, and safety stands aro placod plopor-
ly {see Eaclion 1}.
a S6t th6 parking brake eecurely and block tho tear wh6ol3'
a Jack up tho f.ont ot tho car and rupport whh sstoty standa.
(cont'd)
Rotat€ th€ tront wh6ol and chsckfo. volt6g€ botwean the D9 andA25 o. A26 terminals. Block theother whaol 30 it do€s not turn.
14-57

Electrical Troubleshooting
Troubleshooting Flowchart lcont'dl
Possible Cause
'Short in A/T gear posilionswitch wire. Faulty A/T gear position switch
NOTE: Code 5 is caused whenthe TCM receives two gear po-sition inputs at the same time.
Or425 t- |
-l@r
A19l+) A25 (-)
YES
14,59
Solt-diagno8is l!4 indicato. tightblinks fiv6 timos.
Turn the ignition switch ON.
Observe the A/T gear position in-dicator, and select each positionseparately.
Do any indicators stay onwhen the selector lever isnot in that position?
The systom is OK ai this timo.Ch.ck tho wiro ha|noss toroamago.
Turn the ignition switch OFF.
Connect the Test Harness be,tween the TCM and connectors{see page 14-49}.
Turn the rgnition switch ON.
Shilt to other than E position.
Measure the voltage b€tween theA21 and A25 or 426 terminats.
Chock for short in GRN/RED wi.o botwoon tho A2t torminaland th6 A/T goar po6ition swirch or A/T 96ar posirion indi-cator. lf wire is OK, chock for loo8o TCM connocioF. lfnecassary, subatituto a known-good TCM and rochsck.
Measure the voltage between the419 and A25 or 426 terminals.
Ch6ck for 6hon in LT GRN/BLK wi.e borwoon tho A19 tor-minal and tho A/T goar position indicato., o. a shon inGRN/WHT or GRN wiros botwson tho A/T goa. position in-dicato. and tho A/T goa. position swhch. ll wire is OK. chockfor looso TCM connactoE. lf nocos$sry, substituto a known-good TCM and .ech6ck,
ls the battery voltage?
14-58
To page

14-58
Measure the voltage between theAl l and 425 ot 426 tetminals.
ls thgre battery voltage?
YES
shift ro other than E posirion.
Measure the voltage belween lheA17 and A25 or A26 terminals.
Chock to. short in PNK/GRN wire betwoon tho Al7 torminal andth6 A/T gsar position switch. It wire is OK, chsck for looso TCMconnoctors. lf nocessary, substitute a known-good TCM androch€ck.
ls there battery voltage?
Shifi to other than E] position.
Measure the voltage between theA15 and A25 or 426 terminals.
Chock for short in GRN/BLU wire betweon the A15 terminal andthe A/T gosr position switch or A/T g€a. position indicato.. ll wirois OK, chock for loose TCM connectors. ll nocessary, substitulsa known-good TCM and rochock.
ls there battery voltage?
Shilt to other than E position.
Measure the voltage between theA13 and A25 or 426 terminals.
Chock for short in GRN/YEL wire betweon ths A13 torminal andthe A/T gear position switch or A/T gear posilion indicator. l{ wirois OK, check lor loose TCM connectors. lI necessarv, substitutaa known-good TCM and rechsck.
ls there battery voltage?
Shift to other rhan I oosirion.
Chock tor shon in LT GRN/WHT wi.e b€twoan th6 A1'l lerminaland the A/T gear position switch or A/T gear position indicator.lf wira b OK, ch6ck foi loose TCM conneclors. lf noc€ssary, sub-stituto a known-good TCM and rocheck.
Chock for looso TCM conn€ctors.lf noce$ary, substitute a known-good TCM and recheck.
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ll
{cont'd)
14-59

Electrical Troubleshooting
Troubleshooting Flowchart {cont'dl
ls there voltage?
ls there voltage?
NO
To page l4-61
- - r9ta21(+ I A25{-)
Self-diagnosis E indicator lightblinka six timos.
Connect the Test Harness be,tween the TCM and connectors(see page '14-49).
Turn the ignition switch ON.
Measure the voltage between theA21 and 425 or 426 terminals.
Ropair open in GRN/RED wire be,tweon th6 A21 terminal and theA/T gssr position switch.
Shilt ro N or E position.
Measure the voltage between theA19 and A25 or A26 terminals.
Ropair open in LT GRN/BLK wireb€tw6on the 419 torminal and th€A/T gear position indicato..
Possible Cause
. Disconnected A/T gear positionswrtcn connector' Open in A/T gear position switch
. Faulty A/T gear position switch
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A25t-l
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14-60

Measure the voltage between theA17 and 425 or A26 terminals.
Roprir opon in PNK/GRN wire botwoonthe A17 torminal and rh6 A/T goar posi-
tion switch.
Measure thevoltage between theA15 and A25 or A26 terminals.
Ropair open in GRN/BLU wir6 bolwoenthe A15 r6.minal and tho A/T goar posi-
tion switch.
Measure the voltage between theA13 and A25 or A26 terminals.
ReDair open in GRN/YEL wito botw€onthe Al3 torminaland th€ A/T goar posi-
lion switch.
Measure the voltage between theA11 and A25 or A26 terminals.
Ropaii opon in LT GRN/WIIT wiro bo-tw€en the A 1 1 te.minal and tho A/T goar
oosition switch.
Check lor loos€ TCM connectors.It necossaty, substituto a known_good TCM and r6ch6ck.
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voltage?
voltage?
All(+ I
voltageT
(cont'dl
14-61

Electrical Troubleshooting
S€ltdiagno3b Lql indicaror lighrblinks sovon timgs.
Turn the ignition switch ON.
Check whether the MalfunctionIndicator Lamp {MlL) blinks (seesection 11).
Ropai lhe PGM-FI Sysrem (so€Bection 1 11,ls the MIL blinking?
Turn th6 ignition switch OFF.
Disconnect the 26P and22P con-nectors from the TCM.Connect the Test Harness "A"
and "D" connectors to the wireharness only not to the TCM (seepage 14-49).
Turn the ignition switch ON.
Measure the voltage betw€€n theD18 and A25 or A26 lerminals.
Repair opon o. sho.t in WHT/BLKwire botwoon th€ D18 tarminaland the ECM.
fs the voftage 4.75-5.25 V?
Measure the voltage between theA5 and A25 or A26 terminals.
Ropair lhon to powor sourc6 inBLU/YEL wiro botwoon the A5torminal and th6 lhift control solo-noid valve A.
Turn the ignition switch OFF.
Troubleshooting Flowchart (cont'dl
Dl8( r I
Possible Cause
. Discohnected shift control sole-noid valve A connector. Short or open in shift controlsolenoid valve A wire. Faulty shill control solenoid
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oooooooooooMeasure the resistance betweenthe A5 and 425 or 426 terminals.
ls the resistance 14-16 0?
NO
3P CONNECTORView from terminal side.
SHIFT CONTROLSOLENOID VALVEASSEMBLY
(cont'd)
Chock lor loora TCM connectoE.lf n6c€53ary, sub3titut6 a known-good solonoid valvo assembly orTCM and r6check.
Disconnect the 3P connector tromthe shift control solenoid valve as-sembly.
Check for continuitv between theA5 and A25 or 426 torminals.
Ropair shon to ground in BLUI'ELwir6 botwoon tho A5 tstminal andtho shift conlrol solonoid valvo A.
Measure lhe resistance of thesolenoid at lhe 3P connector.
Check fo. opon in BLU/YEL wirobolween th6 A5 torminal and thoshift control solenoid valve A.
ls the resistance '14-16 0?
14-63

Electrical Troubleshooting
Troubleshooting Flowchart (cont'dl
Possible Cau6e
. Disconnected shift control sole-noid valve B connector. Short or open in shift controlsolenoid valve B wire. Faulty shilt control solenoidvalve B
Solfdiagnolir [!4 Indicato. lightbllnk! eight tim6r.
Turn the ignition switch ON.
Check whother the MalfunctionIndicator Lamp {MlL) blinks (seesection I 11.
Rcpsir rho FGM-FI Syrtem lso6scciion l1l.ls the MIL blinking?
Turn the ignition swirch OFF.
Oisconn€ct the 26P and 22P con-nectors trom the TCM.Connect the Test Harness "A"
and "D" connectors to the wirohamess only. not to the TCM {sesp6ge 14-49).
Turn the ignition switch ON.
Measure the voltage betwe€n theD18 and A25 or A26 terminals.
Ropeir opon or short in WHT/BLKwiro trotweon th6 D18 termineland tho EcM.
ls the voltage 4.75-5.25 V?
Measure the voltage between th€A3 and A25 or A26 terminals.
Ropair rhort to powor rourco inGR /WHT wir6 b€twgan tho A3tormirEl and shift conLol lolonoidvalve B.
Turn the ignition switch OFF.
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DlA( + I
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