1998 HONDA INTEGRA Transmission

JP1681 | The scan tool indicates Diagnostic Trouble Code (DTC) P1681: A low voltage problem in the A/T Fl signal A
circuit.
P1682 | The scan tool indicates Diagnostic Trouble Code {DTC) Pl682: A high voltage problem in the A//T Fl signal A
circuit.
]TtOgOl fh" scan tool indicates Diagnostic Trouble Code (DTC) P1686: A low voltage problem in the A"/T Fl signal B
ctrcutt.
lFt Ogt-l fh" scan tool indicates Diagnostic Trouble Code (DTC) P1687: A high voltage problem in the A"/T Fl signal B
crrcurt.
ECM CONNECTOR C {31PI
IGRN/BLU)
Wire side of female terminals
TCM CONNECTOR {22P) {C419}Wire side of female terminals
2!a5't0
tl1213 tatat6It1a19 ,/
AFSB I I AFSA
{GRYI T- _IIGRN
@)o
2311to21 ;'15 15 17 13 13
E./ zl za
G-\
AFSIGR
\-
a
AFlGl
I
sBl
L]
r@!I AFSA
| {GRN/lRt ltl
iFSGRIA[/BLUt
12 3 a 5 6 7 89
tz /'tt //t't /ts zo
to ,/
DTC P1681, P1682, P1686 end/or P'1687 are stored.
Problem verificetion:1. Do the ECM Reset Procedure.2. orive the car for several milesso that the transmissionupshifts and downshifts severarlrmes.
Intormittent lailure. system is OKat thi3 tim€. Check tor ooo. con-nections or loo3o wir6s al C419{TCM} .nd ECM.
ls DTC P1681, P1682, Pl686and/or P1687 indicated?
Check tor a short in th6 wires{AFSA, AFSB linel:1. Turn the ignition switch OFF.2, Disconnect the 22P connectorfrom the TCM.3. Disconnect the ECM conn6c-tor C (31P).
4. Check for continuity betweenbody ground and ECM con-nector terminal C28 (C27)*.
Rcoair 3hort in tho wiros betweenECM lC28 or C27*l rnd TCM.ls there continuity?
Check fo. an open in the wiresIAFSA, AFSB lines):Check for continuity between ECMconnector terminal C28 (C27)* andTCM 22P connector terminal No. 7(No.6i*.
Repai. opsn in the wiros bdtweenECM lC28 or C27'l and TCM.
Subsiiiutg a known-good ECMend r6ch€ck. lf 3ymptom/indica-tion goes away, repl.c6 the origi-nal ECM.
":DTC P1686 or Pl687 (NT Fl sisnal 8l
1 1-95

Starter Switch Signal
This signals the ECM when the engine is cranking.
NOTEI. M/T:Clutch pedal must be depressed.. A,/T: Transmission in E or E position.
Wire sida of female terminals
Check for an opon or short in thcwi.. ISTS lin.l:Measure voltage between ECMconnector terminals C6 and Agwith the ignition switch in thostart position (lll).
Inspect the No.31 STARTER SIG-NAL (7.5 Alluse in the under-dashfuse/relay box,
ls there battery voltage?
- Repair 3hort in the wire be-tween tho ECM lc6l rnd theNo. 31 STARTER SIGNAL (7.sAl tus€ or the PGM-FI mainr€lay.- Roplace the No. 31 STARTERSIGNAL 17.5 Al fuso.
Starter switch signal b OK.
Ropair open in tho wire botwaonih6 ECM {CGl and the No, 3lSTARTER SIGNAL {7.5 Al fuse.
11-105

ldle Control System
Check lor a 3hon in the wiro IATPPN linel:1. Turn the ignition switch OFF.2. Disconnect the 10P connectorfrom the gauge assembly.3. Disconnect the 26P connectorfrom the TCM.4. Turn the ignition switch ON (ll).
5. Mea su re voltage betweenECM connector terminals C29and A9.
Automatic Transaxle {A/T) Gear Position Signal
1 1-106r.
This signals the ECM when the transmission is in Park or neutral.
(To page 11-107)
Check the oparation ot the A/Tg6ar posilion switch:1. Turn the ignition switch ON (ll).
2. observe the A/T shitt position
indicator and select each Posi'tion separately.
560 the A/T go.r position indice-tor inroection lseo section 141.
Check tor r 3hort in tho wiro (ATP
PN lino):1. Iurn the ignition switch OFF.2. Disconnect the ECM connec-tor C (31P).
3. Check for continuity betweenbody ground and ECM con'nector terminal C29.
ls there approx.5 V?
Rcpair short in the wir6 batwoentho ECM lc29l and the gauge
6er$lv.
Substitute a known-90od ECMand rccheck. lf prescribed volt-ago is now avail.ble, rcplacc thooriginal ECM.
,PN
GRN/
LGIIBRN/BLKI
ATP PN
ILT GRN/BLKI
Wire side of temale terminals
12355It0
11 1213t319
2A29/,a
I ArP
d llr (
Il/BLKI

{From page 11-'106)
Check tor an op€n in the wiro {ATpPN lin€):Turn the ignition switch OFF.Fgconnect the 10P connectorto the gauge assembly.Reconnect the 26P connectorto the TCM.stan the engine.M€asure voltage between ECMconnector termanals C29 andAg with the transmission inE position.
- Ropair open in th6 wiro bo-twoen tho ECM {C291 and thogru96 a3sgmbly.- Repair open in GRN wir. bo-twaan thc gauga !srembly.nd tho A/T g.ar po3itiongwitch.
ls there less than 1.0 V?
Chod( for an opon in tho wir6 (ATPPN linel:Measure voltage between ECMconnector terminals C29 and A9with the transmission in E] posi,tron.
R.psir op.n in GRN/WHT wirob€twcan th. gaugc rsr.mbly andthc A/T ge.r po.ition 3whch.
ls there less than 1.0 V?
A/T g6er position signal i3 OK.
a l32P)LGl{BRN/BLKI
Wire side of female terminals
ATP PN{I-T GRN/BLKI
11-107

I
tr,
- Engine will not start.- Inspection of PGM-FI mainrelay and relay harne$.
Check lor an open in the ware{GND line}l1. Turn the ignition switch OFF.2. Disconnect the PGM Fl mainrelay 7P connector.3. Check for continuity betweenthe PGM'FI main relay 7P connector terminal No. 3 and bodyground,
Repair open in the wire betweenthe PGM-Fl main relay and G101.
Check for an open or shon in thewire {BAT line)rMeasure voltage between thePGM-Fl main relay 7P connectorterminal No.7 and body ground.- Fepaii open or short in thewire between the PGM-FImain rel6y and the Fl E/M 115A) tuse.- Replace th€ Fl E/M {15 A)fusein the under-hood tuse/relay
ls there battery vohage?
Check foi an open or shori in thewire (lG1 line):1. Turn the ignition switch ON (ll).
2, Measure the voltage betweenthe PGM Fl main relay 7P con-nector terminal No. 5 and bodyground,R€pair open or short in thewire betwo€n the PIGM-FI mainrelav and the No. 13 FUELPUMP ISRS UNIT) (15 Altuse.ReDlace the No. 13 FUELPUMP ISRS UNID (15 Al fusein the under-dash tuse/relayoox,
Check for an open or short in thewire {STS linel:1. Turn the ignition switch to theSTART { lll) position.NOTE:. M/T: Clutch pedal must beoepresseo.. A/T: Transmission in ld or
E position.2. Measure the voltage betweenthe PGM-FI main relay 7P con-nector terminal No. 2 and bodyground,
Troubleshooting
'l RELAY 7P CONNECTOR
GND
t .--.-l T;-l IBLK)L' 'r I" T----
lr s o rl A
+
Wire side o{ female termanals
8AT(YEL/WHT)
STS {BLU/WHTI
(cont'd)
(To page11- t 26)
11-125

Emission Control System
Check the vacuum when hot:1. Turn the ignition switch OFF.2. Block the rear wheels and setthe parking brake.3. Jack up the front of the vehi-cle and support it with safetystands.4- Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator fan comes on, thenlet it idle.5. Check for vacuum at the vacuum hose with transmissionin gear (A/T in E position,M/T in 'l st gear) after startingrne engrne.6. Ouickly raise the engine speedto 3,000 rpm.
Evaporative Emission (EVAP) Controls (cont'd)
(From page 1'l 147)Check the EVAP purge controlsolenoid valve:1. Disconnect the 2P connectorfrom the EVAP purge controlsolenoid valve.2. Ouickly raise the engine speedto 3,000 rpm.
{To page 11 149)
tfl'I
Check lor a short in the wire{PCS line}l1. Turn the ignition switch OFF.2. Disconnect ECM connector A(32P).
3. Check for continuity betweenthe EVAP purge control solenoid valve 2P connector termi-nal No. 2 (818C5 engine: No. 1)and body ground.
Check for an open in the wire llclline):1. Turn the ignition switch OFF.2, Disconnect the 2P connectorfrom the EVAP purge controlsolenoid valve.3. Turn the ignition switch ON (ll).
4. At the harness side, measurevo ltage between the EVAPpurge controlsolenoid valve 2Pco n nector terminal No. 1( B 18C5 engine: No. 2) andbody ground.
EVAP PURGE CONTROI SOLENOIDVALVE 2P CONNECTOR IC114)B18C1, Cl8Bl engines: 818C5 engine:
PCSIRED/YEL}
femaleWire side offemaleterminals
YES
IGPl{YEL/BLKI
IGPlIYEL/BLKI
ECM CONNECTOR A {32PIPG1IBLKI
Insp€ct vacuum hose routing.lf OK, replace the EVAP purge
control solenoid valve.
neDair short in the wire betweenthe EVAP purge control solenoidvalve and the ECM lAl5).
Substitute a known-90od ECMand recheck. lI symptom/indica-tion goes away, replace the origi-nal ECM.
Repair open in the wirc betweenEVAP purge control solenoidvalve and PGM-FI main relav fuse.ls there battery voltage?
Check for an open in the wireIPCS linel:1. Turn the ignition switch OFF.2. Reconnect the 2P connector tothe EVAP purge control sole'noid valve.3. Turn the ignition switch ON (ll).
4. Measure voltage betweenECM connector terminals A15and A10.
Bopair open in the wiro betweenthe EVAP purgo control 3olanoidvalvo and the EcM {415).
11-144
(To page 11-149)

Transaxle
Clutch ...........12-1
Manual Transmission ............................ 13-1
Automatic Transmission ....................... 1 4-1
Differential
Manual Transmission
B1881 engine ................................... 15-1
818C1 engine ................................... 15-9
B18C5 engine .............. 15-19
Automatic Transmission ................. .. 15-27
Driveshafts ... 16-1

lllustrated Index
NOTE:
a Whenever the transmission is removed, clean and grease the release bearing sliding surface'
a lf the Darts marked with an asterisk (*) are removed, the clutch hydraulic system must be bled (see page 12-6).
a lnspect the hoses for damage, leaks, interference, and twisting.
*RESERVOIR
HOSE
.RESERVOIR
ASSIST SPRING
PEDAL PIN
CLUTCH PEDAL
Removal/lnspecrion, page 12 1 1fnstalfation, p,age 12 12
6 x 1.0 mm9.8 N.m 11.0 kst.m, 7 lbt'ftl
'15 N.m (1 .5 kgt.m,11 tbf.tr)
*CLUTCH MASTER CYLINDERRemoval/lnstallation, page 12-5
Adjustment,page 12 4
19 N.m 11.9 kgl.m,14 tbf.ft)
R€LEASE BEARING
15 N.m (1.5 kgf.m,11 lbf.fr)
ICLUTCH PIPE
.CLUTCH PIPE
FLYWHEELInspection, page 12-9Replacement, page 12-9
JOINT
I x 1.25 mm25 N.m {2.6 kgf.m,19 tbf.frl
I
TRANSMISSIONRemoval, see
CLUTCH DISCRemoval/lnspection, page 12-8lnstalfation, page 1 2 1O
section 1312 x 1.0 mm'103 N.m (10.5 kgl.m,76 tbf.fr)
PRESSURE PLATERemoval/lnspection, page 12 7Installation, page 12 10
8 x 1.25 mrr|22 N.m 12.2 kgt.n,16 lbf.ft)
24 N.m (2.4 kgf.m,17 tbf.tr)
15 N. m {1 .5 kgf.m,11 lbf.tr)
COTTERReplace.
I
WInl
9l
v.^- fl
*CLUTCH HOSE