1994 HONDA INTEGRA Workshop Manual

S.fdl.enorl! L&l indicdor lighlblinks fourtoon tlmoa.
ls the Malfunction IndicatorLamp (MlL) onl
Stan the ongine and warm it upto normal operating temperature{th€ radiator lan com€s on).
Shift to E position,
Turn rhe ignition switch OFF.
Possible Cause
. Sh"rt ". "e"" i" FAS |YEU ,"rirt. Fsulty ECM.
Connect the Test Harness be-tween the TCM and connociors{see page 14-491.
Turn the ignition switch ON andwsit for at least two seconds.
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Measure lhe voltage betwgan thso16l+ ) and A25 or A26(- | tor-mrnals.
lcont'd)
Ropair tho PGM-FI Syrtom lloo..ctlon 111.
Chock for looro TCM connoctora.lf noco$ary, subatituta a known-good TCM and .ech€ck.ls thoro approx. 5 V?
Turn the ignition switch OFF.
Dkconnect the Test Harness fromthe TcM.Leave connect€d to car harness.
Turn the ignition switch ON.
fo page 14-74
14-73

Electrical Troubleshooting
Troubleshooting Flowchart (cont'd)
ls there continuity?
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NOTE: View lrom wire side.
NO
From page 14-73
Measure the voltage between theD 16{+ ) and A25 or A26{- ) ter-mtnals.
Check for loos€ TCM connoctors.ll ngcossary, substituto a known-good TCM and rechock.
ls there approx. 5 V?
Disconnect the 26P connectorfrom the ECM.
Check for continuitv between theD16 and A25 or A26 rerminals ofthe Test Harness.
Ropairshort in YEL IFAS) wire be-tw6on TCM and ECM.
Disconnect the 26P and 22P con-nectors from the Test Harness.
Check for continuity between theD16 (YEL) terminal ot fCM 22Pconnector and A19 (YEL) terminalof ECM 26P connector.
Chgck tor loos€ TCM connoctofs.lf nocassary, substitute o known-good TCM and rech6ck.
Ropair opon in YEL {FAS} wiro bo-trve€n TCM and ECM.
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22P CONNECTOB

Possible Cause
. Disconnected mainshaft speedsensor connecror. Short or open in mainshaltspeed sensor wrre.. Faulty mainshatt speed sensor.
NOTE:. A code 15 on the TCM doesn't alwsysmean there's an electrical problem in themainshaft or countershaft speed sensor cir-cuit; code '15 may also indicate a mechani-cal Droblem in the transmission.
3P CONNECTOR
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1-L(0)Y-!
(cont'd)
solf-diagnosis E indicator lightblink tiftoon timos.
Are the mainshaft and counter-shalt speed sensors installedproperly?
Disconnect the 3P connector lromthe mainshaft speed sensor.
Measure the resistance ot themainshaft speed sensor.
ls the resistance 4OO-600 O?
Disconnect the 22P connectorfrom the TCM.Connect the Test Harness "D"
conneclor to the wire harnessonly, not ot the TCM (see page14-49).
Check the continuity betweenD19 and D12 terminals and bodyground.
Rcoair short in ORN/BLU otWHT/BLU wiros botween Dlgand Dl2 to.minals and tho main-shatt speod ronsor.
Reconnect the 3P connector tothe mainshatt speed sensor,
To page 14-76
14-75

Electrical Troubleshooting
Troubleshooting Flowchalt (cont'd)
From page 14-75ooooooooooooo
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Measure the resistance betweenD19 and D12 terminals.
Run Electrical Troubleshooting folcode 9.Check for loos6 TCM connectors.It nocessary, substitute a known-good TCM and r.check.
ls the resistance 4O0-600 0?
Disconnecl the 3P connector fromthe mainshaft speed sensor.
Check tor continuitv betweenD19 terminal and the mainshaltspeed sensot connector.
Ropair op.n in ORN/BLU wir6 b6-tweon D19 terminal snd th€ main'shaft spa6d sensor.
Chock tgr continuity betweenD12 terminal and the mainshattspeed sensor connector.
Ropair open in WHT/BLU wire be-twe€n D12 tgrminal and th€ main-shaft sD6ed sonsor.
Chsck for loos€ TCM connoctors.ll noco$ary, substitute a known-good TCM and rocheck.
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MAINSHAFT SPEED SENSOR
3P CONNECTORView from terminal side
MAINSHAFT SPEED SENSOR
14-76

@ indic"to, light i8 on st6sdyInot blinkingl whenevor the ioni-tion switch is ON.
Disconnect the 26P connectorfrom the TCM.Connect the Test Harness "A"
connector to the wite harnessonly, not to the TCM (see page14-49).
Turn the ignition switch ON.
Measure the voltage between theA8 terminal and body ground.
Ropair shon to power in GRN/BLKwiro botwoen A8 terminal andgauge assembly.
Check for a sho.t to ground on thePNK/GRN wi.e. ll th€ wir. is OK,roplac€ the A/T gear poaition in-dicator.
Turn the ignition switch OFF.
ls there voltage?
Connect the Test Harness "A"
conneclor to the TCM.
Measure the voltage between the417 terminal and body groundwith the selector lever in anv oo'sition other than El.
ls there volrage?
ReDlace tho TCM.
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{cont'd)
14-77

Electrical Troubleshooting
Troubleshooting Flowchaft (cont'dl
Does the @ indicatorcome on?
ls there baftery voltage?
YES
lighr
I A25
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+d
+
I + )A23 A25l - l
(+ tA24 426(- |t\@
Lq4 indicator light do6s not comeon with the ignition switch ON. (ltshould come on Ior about 2seconds.l
ls the service check connectorconnected with the specialtool ISCS Short Connectod?
Diaconnect tho spocial tool fromth6 sgrvice check connoctor andrecheck.
Check {or loos6 TCM connoctors.lf necessaw, substitute a known-good TCM and recheck.
Turn the ignition switch OFF.
Disconnect the 26P connectorfrom the TCM.Connect the Test Harness "A"
conneclor to the wile harnessonly, not to the TCM (see page14-49).
Check for continuity between theA25 terminal and body groundand A26 and body ground.
R€pair open BRN/BLK wires be-twe6n A25 or A26 torminals andG 101.
Turn the ignition switch ON.
Measure the voltage between theA23 or A24 and A25 or A26 termrnals-
Repaii open or short in BLK/YELwire between tho A23 and /ot424 terminals and underhoodtuse /relav box.
Turn the ignition switch OFF.
To page 14-79
14-78

Connect the Test Harness "A"
connector to the TCM.
Turn the ignition switch ON.8e sure that voltage is availablefor 2 seconds between thg A8 tor-minal and A25 or A26 terminal.
Chrck for opon or rhort in GR /8LK wirc bctw.on th. A8 termi-nal and tha gauOa arrambly.
Turn the ignition switch OFF.
Disconnect the Test Harness "A"
connector from the TCM.
Check for continuity between theA8 terminal and the GRN/BLKwire at tho gaugo assgmbly (see
section 23).
B.p.ir op.n in GRI{/BLK wi.. bo-lwaen the A8 terminal and th.gauga 6aaombly.
Ch€ck for loor6 TCM conn6ctor3.Check the A/T goa. polition
awitch. ll noc€$ary, subrtitutg aknown-good TCM .nd rochock.
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a26t - |
A8(+)
(cont'd)
14-79

Electrical Troubleshooting
Troubleshooting Flowchart {cont'dl
. Lock-up clutch does not haveduty operation (ON -OFF).. Lock-up clutch does not engage.
In3poction ol ths A/C aign6l.
TLrrn the blower switch ON.
Push the A/C switch ON.
Soe Air Condilioning inspoctionlsee rection 221.
Disconnect the 26P conneclorfrom the TCM.
Measure the voltage between theA22 {BLK/RED) and A25 (8RN/
BLKI or A26 IBRN/BLK) terminals.(A/C compressor OFFI
Repair opon in 8LK/RED wiio b6-twoon lho A22 torminal and A/Ccomprossor clulch rel6y.
. A/C aignal ls OK.. Chock lor looso TCM connec-toB. lf n6co$ary, substitute aknown-good TCM and rschock.. Inrpoct tho 6ir condhioning lsooloction 221.
BR /ALK