1998 HONDA CIVIC egr

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t
lFrom page 11-262)
Chock for rn opon in the wire
{EGR L linel:1. Reconnect the EGR valve connector.2. Tu.n the ignition switch ON (ll).
3. Measure voltage betweon thePCM connector terminals Dgand Dl1.
Check tor th€ wirc (EGR L line):
Check for continuity betweenECM connector terminal Dg andbody ground.
ls there approx. 1.2 V?
Roprir op6n in the wirs botweanthe EGR valvo.nd th. ECM lD9).
Rooair ahort in tho wiro baftr,otn
tho EGR v.lv..nd the ECM lDgl.
Ch€ck the EGR valve:1. Turn the ignition switch OFF.2. Disconnect the EGR valve 6P
connector.3. Connect the battery positive
terminal to EGR valve 6P con-nectorterminal No. 6.4. Stan the engine and let it id'e,then connect the battery nega_
tive terminal to EGR valve 6Pcon nector term inal No, 4,
ECM CONNECTOR D I16P'
Wire side oI female terminals
EGR VALVE 6P CONNECTOR
wire sid6 of lemale te.minals
(cont'd)

Emission Gontrol System
Exhaust Gas Recirculation System (Dl6Y5 engine with M/Tl (cont'dl
lFrom page 11 263)EGR VALVE6P CONNECTOR {C144}
J
Wire sideof femaletermtnals
J
Check lor an op€n in the wire (E-
EGR line):1. Turn the ignition switch OFF.2. Disconnect the ECM connector,A (32P)trom the ECM.3. Check lor continuity betweenECM connector terminal A7and the EGR valve 6P connec-torterminal No. 6.
Repair open in the wiro botweenthe EGR valv6.nd th€ ECM {A71.
Check tor a short in the wire {E-EGR lin6l:Check for continuity betweenECM connector terminal A7 andbody ground.
Reoair shorl in tho wiro belwe€nthe EGn vake rnd the ECM lA7l.ls there continuity?
Check fo. an open in tho wiro
IGND line):Check for continuity between theEGR valve 6P connector terminalNo.4 and body ground.
R6pai. open in th€ wir. betweenth6 EGF control solenoid v6lveand G101.
Substitute 8 known-good ECMand recheck. It symptom/indica-tion goes away, roplace the origi-nalECM.
CONNECTORA l32P)
2
a
I G101
Q) raur
-264

J\
Exhaust Gas Recirculation System
The scan tool indicates Diagnostic Trouble
Recirculation (EGRlvalve lift sensor circuit.
(D16Y5 enginel
Code {DTC) P1498: A high voltage problem in the Exhaust Gas
EGR VALVE LlFf SENSOR 3P {M/T: 6Pl CONNECTOR (C1441
cvT:
vcc2{YEL/BLUI
SG2 IGRN/BLK)
IM/T:sG2{GRN/BLKI
Wir€ side ol lemale terminals
ECM CONNECTOR D (16P)
vcc2(YEL/BLUIsG2(GRN/BLK)
Wir€ side of female terminals
PCM CONNECTORS C 131P)'
Wire side oI female terminals
11-265
- The MIL has been reportod on.- DTC P1498 is storod.
Probl€m verification:1. Do the ECM/PCM Reset Proce
dure.2. Stan the engine.
Intermittent tailure, sy3lem is OK
at lhis time. Check tor poor con'
nections or loose wire3 at C144
|EGR valvel and ECM/PCM.
ls DTC P1498 indicated?
Check for an open in tho EGRvalv6 lift sen3or:1. Turn the ignition switch OFF.
2. Disconnect the EGR valve lift
sensor 3P (M/T: 6Pl connector.
3. Turn the ignition switch ON (ll).
4. Measure voltage between the
EGR valve litt sensor 3P lM/T:6P) connector terminals No. 3and No.2.
ls there approx.5 V?
Check lor op€n in th€ wire (SG2
line):Measure voltage between ECM/PCM connector terminals 010 andD1l (C18 and C28)*.
Repair open in tho wiro betwoen
ECM/PCM lDl1 (Cl8)r) and EGR
valvo lift sensor.ls there approx. 5 V?
Substitute . known-good ECM/PCM and recheck. ll symptom/indicrtion goes away, replacothe original ECM/rcM.
*:'99 - 00 D16Y5 engine with CVT

Synchro Sleeve,
Synchro Hub
MBS Shift Piece InsPection
1. Measure the width of the MBS shift piece.
Standard; 6.9 - 7.1 mm 10 272 - 0.280 inl
Service Limit: 6.8 mm {0.268 inl
lf the width of the MBS shift piece is less than
service limit, replace the MBS shift piece'
t
I nspection/l nstallati on
'1.lnspect gear teeth on all synchro hubs and synchro
sleeves tor rounded off corners, which indicate
Install each synchro hub in its mating synchro
sleeve, and check for freedom of movement.
NOTE: lf replacement is required, always replace
the synchro sleeve and synchro hub as a set.
SYNCHROSLEEVE
When assembling the synchro sleeve and synchro
hub, be sure to match the three sets of longer teeth
(120 degrees apart) on the synchro sleeve with the
three sets of deeper grooves in the synchro Hub
CAUTION: Do not install th€ sYnchro sleeve with
its longsr t€sth in the synchro hub slots bocause ii
will damage ths spring ring.
LONGER TEETH
13-27

Mainshaft Thrust ShimI
I
Adjustment (cont'dl
b.Attach the mainshaft holder to the mainshaft asfollows:
NOTEI
. Back-out the mainshaft holder bolt and loosen
the two hex bolts.
. Fit the holder over the mainshaft so its lip istoward the transmission.
. Align the mainshaft holder's lip around thegroove at the inside of the mainshaft splines,then tighten the hex bolts.
MAINSHAFT HOLOERBOLT
MAINSIIAFTHOLDER07GAJ-PG20110
d.
Seat the mainshaft fully by tapping on the end witha plastic hammer.
Thread the mainshaft holder bolt in until it just
contacts the wide surface of the mainshaft base.
u
e. Zero a dial gauge on the end ofthe mainshaft.
MAINSHAFT HOLDER07cAJ_PG20110
Turn the mainshaft holder bolt clockwise: stop turn,ing when the dial gange has reached its maximummovement. The reading on the dial gauge is theamount of mainshaft end olav.
CAUTION: Turning the mainshaft holder bolt morethan 60 degre€s after the needle ot the dial gauge
stops moving may damage the iransmission.
lf the reading is within the standard. the clearance iscorrecl.
lf the reading is not within the standard, recheck theshim thickness.
Standard: 0.11 - 0.18 mm {0.00it - 0.007 in}
t.
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Transmission
Reassembly lcont'dl
11. Position the 36 mm spring washer and washer onto
the mainshaft bearing.
MAINSHAFT/COUNTERSHAFTSHIFT FORK ASSEMELIES
Tape the mainshaftsplines.
12.
13.
Install the mainshaft, countershaft, and shift fork
assemblies.
NOTE; Align the finger of the interlock with thegroove in the shift fork shaft,
lnstall the spring washer and shift arm B attaching
bolt.I x 1.0 mm31 N.m (3.2 kgl.m, 23 lbt.ft)
IST/2ND SELECT SPRINGL. 36.26 mm 11.428 in)
54 N.m 15.5 kgf.m,40 tbt.ftl
SPf,INGWASHER
GUIDE BOLT
14.
39 N.m 14.0 kgf.m, 29 lbf.frl
Install the 1sv2nd select spring, 28 mm plug bolt.
and interlock guide bolt,
NOTE: Apply Iiquid gasket (P/N 08718 - 0001 or
08718 - 0003) to the threads of the 28 mm plug bolt
and interlock guide bolt.
13-40
15. Install the reverse idler gear and reverse idler gear
shaft.
REVERSE IDLERGEAR SHAFT
LJ16. Install the reverse shift holder.
REVERSE SHIFT
l5 N.m (1.5 kgf.m,11 lbt.trl
GEAR
6 x 1.0 mm

Synchro Sleeve, Synchro Hub
Inspection
1,Inspect gear teeth on all synchro hubs and synchro
sleeves for rounded off corners. which indicates
Install each synchro hub in its mating synchro
sleeve and check for freedom of movement.
NOTE: lf replacement is required, always replace
the synchro sleeve and synchro hub as a set.
Installation
When assembling the synchro sleeve and synchro hub,
be sure to match the three sets of longer teeth (120
degrees apart) on the synchro sleeve with the three sets
of deeper grooves in the synchro hub.
CAUTION: Do noi install tho synchro sleeve with its
longer toeth in the synchro hub slots, because it will
damage the spring ring.
SYNCItROSLEEVCLONGER TEETH
13-80

Mainshaft Thrust Clearance
Adjustment (cont'd)
13. Check the thrust clearance in the manner describedoetow.
CAUTION: Measuremenl should be made at roomtempetature.
a. Slide the mainshaft base over the mainshaft.
MAINSHAFT EASE07GAJ - PG20.130
b. Attach the mainshaft holder to the mainshaft asfollows:
NOTE:
. Back-out the mainshaft holder bolt and loosenthe two hex bolts.. Fit the holder over the mainshaft so its lip istowards the transmission.. AIign the mainshaft holder.s Iip around thegroove at the inside of the mainshaft splines,then tighten the hex bolts.
MAINSHAFT HOLOERBOLT
MAINSHAFT
[--F-e
l6fffi l
rx| - \-/ I/ Borrs
ff
MAINSHAFTHOLDER07GAJ - PG20110
MAINSHAFT BASE07GAJ - PG20130
13-90
c. Seat the mainshaft fully by tapping its end with aplastic hammer.
d. Thread the mainshaft holder bolt in untjl it justcontacts the wide surface of the mainshaft base.
e. Zero a dial gauge on the end ofthe mainshaft.
f. Turn the mainshaft holder bolt clockwise; stooturning when the dial gauge has reached itsmaxtmum movement. The reading on the dialgauge rs the amount of mainshaft end Dlav.
CAUTION: Turning tho mainshaft holder boltmore than 60 degrees after the needle of the dialg€uge stops moving may damage the transmis_ston.
07cAJ _ PG20110
g. lf the reading is within the standard, the clear-ance is correct.
lf the reading is not within the standard. recheckthe shim thickness.
Standard: 0.11 - O.18 mm {0.004 - 0.007 in}
DIAL GAUGE