Page 282 of 1395

PGM-FI System
System Description
INPUTS
CKP/TDC/CYP Sensor
CKF Sensor
MAP Sensor
ECT Sensor
IAT Sensor
TP Sensor
Primary HO2S
Secondary H02S
vss
KS*5
BARO Sensor
ELD*6
Starter Signal
ALT FR Signal
Air Conditioning Signal
Ay'T Gear Position Signal*1
Baftery Voltage (lGN.1)
Brake Switch Signal
PSP Switch Signal
Fuel Tank Pressuae Sensor*4. *5
Countershaft Speed Sensor*1
Mainshaft Speed Sensor*r
OVER-DRIVE Switch Signal*s
ENGINE CONTROL MODULE (ECM)/
POWERTRAIN CONTROL MODULE (PCM) OUTPUTS
|iuel 1"j""- Th,rhg ""d Drrafr";-l
Et*-.nt"tdt"cont.orl
to,r*,c;;trffi;]
l.----.---:. .Lrgnrnon |lmrng Lonrror I
Ecir/PcM B*k',p Fr""il]
m;"t-ll-r*'io*l
Fuel Injectors
PGM-Fl Main Relay (Fuel Pump)
MIL
IAC Valve
Ay'C Compressor Clutch Relay
Radiator Fan Relay
Condenser Fan Relay
ALT
tcM
EVAP Purge Control Solenoid
Valve
Primary HO2S Heater
Secondary H02S HeaterEVAP Bypass Solenoid Valve*a *5
EVAP Control Canister Vent Shut
DLC
Lock-up Control Solenoid Valve*l
Shift Control Solenoid Valve*1
Ay'T Clutch Pressure Control
Solenoid Valve*1
D4 Indicator Light'1 *3, *a
D Indicator Light,l *5
OVER-DRIVE OFF Indicator
Lighl*t *:
*1: A/T {3:'97 model'2: M/f +4:'98 model*5: '99 - 00 models"6: USA
PGM-Fl System
The PGM-Fl system on this model is a sequential multiport fuel injection system.
Fuel iniecior Timing and Duration
The ECM/PCM contains memories for the basic discharge durations at various engine speeds and manifold pressure. The
basic discharge duration, after being read out from the memory, is further modified by signals sent from various sensors
to obtain the final discharge duration.
ldle Air Control
ldle Air Control Valve (lAC Valve)
When the engine is cold, the Ay'C compressor is on, the transmission is in gear, the brake pedal is depressed, the P/S load
is high, or the alternator is charging, the ECM/PCM controls current to the IAC Valve to maintain the correct idle speed.
lgnition Timing Control
o The ECM/PCM contains memories for basic ionition timing at various engine speeds and manifold air flow rates.
lgnition timing is also adjusted for engine coolant temperature.
. A knock control system was adopted which sets the ideal ig nition timing for the octane rating of the gasoline used.*s
Other Control Funstions
1. Starting Control
When the engine is started. the ECM/PCM provides a rich mixture by increasing fuel injector duration.
2. Fuel Pump Control
. When the ignition switch is initially turned on (ll). the ECMiPCM suppli€s ground to the PGM-FI main relay that
supplies current to the fuel pump for two seconds to pressurize the fuel system.
. When the engine is running, the ECM/PCM supplies ground to the PGM-FI main relay that supplies current to the
fuel oumo.
. When the engine is not running and the ignition is on, the ECM/PCM cuts ground to the PGM-FI main relay which
cuts current to the fuel pump.
1 1-80
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Page 440 of 1395

Manual Transmission
Diff€rential
lndex ...................... ......... 13-38
Backlash Inspestion ..,....,.,.....................,......, 13-38
Final Driven Gear Replacement .................... 13-39
Tapered Roller BearingReplacement ............. 13-39
Bearing Outer Race Replacement ......,.,........ 13-i10
Tapered Roller Bearing PreloadAdiustment ............... 13-il1
Oil Seal Reolacement .................................... 13-/l:}
Transfer Assembly
lllustrated Index ............. 13-il4
Inspection ..,....,.,......,...... 13-46
Disassembly ................... 13-47
Transfer Drive Gear BearingReplacement ...,..................,....................... 13-ilg
Transfer Driven Gear Shaft BearingReplacement .............................................. 13-ilg
Transfer Shaft Disassembly/Reassembly .............. 13-50
Transler Cover A Bearing Outer RaceRep1acement.........,.,.,..........,....,...,.........,., 13-50
Transter Housing Bearing Outer RaceReD1acement.............................................. 13-51
Reassembly ..-............,... 13-52
Mainshaft Bearing/Oil Seal
Beplacement .................. 13-62
Countershaft Bearing
Replacement .,,.,.,., ..,...... 13-63
Mainshaft Thrust Clearance
Adiustment .................... 13-6,1
Transmission Assembly
Reassembly .,.,.,.,..,.,....,., 13-67
fnstaffation .,.,.............,... 13-72
Gearshift Mechanism
Overhaul ................ .........13-17
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Page 442 of 1395

MaintenanceBack-up Light Switch
Transmission Fluid
NOTE: Check the fluid with the engine OFF and vehicle
on level ground.
1. Remove the filler plug. then check the level and
condition of the fluid.
FILLER PLUG44 N.m {4.5 kgf.m. 33 lbf ftl
ll
Ptopet Level
\--ril /
HllllllTl /
Hllllrlll /_rf-F{--rno."."
ll| | Replaco.
The fluid level must be up to the filler hole. lf it is
below the hole, add fluid until it runs out. then rein-
stall the tiller plug with a new washer.
lf the transmission fluid is diny, remove the drain
plug and drain the fluid.
FILLEB PLUGa,a N.m 14.5 kgf..n. 33 lbt'ftl
DRAIN PLUG39 N m (4.0 kgf.m, 29 lbf'ft)WASHERReplace.
Reinstall the drain plug with a new washer. and
refill the transmission fluid to the proper level.
NOTE: The drain plug washer should be replaced at
every fluid change.
Reinstall the filler plug with a new washer.
Fluid Capacity
1.7 / {1.8 US qt, 1.5 lmp qtl at oil change
2.1 ! 12.2 US qt, 1.A lmp qtl at overhaul
Alwavs use Genuine Honda Manual Transmission
Fluid (MTF). Using motor oil can cause stiffer shift-
ind because it does not contain the proper additives.
Test/Replacement
1. Disconnect the connectors from the switch.
Terminal side oImale lerminals
BACK.UP LIGHT SWTTCHr 25 N.m 12.5 kgt m, 18 lbf.ftl
WASHERReplace.
Check for continuity between the No. 1 and No. 2
terminals.
. There should be continuity when the shift lever
tnto reverse.
. There should be no continuity when the shift
lever in position except reverse,
lf necessary, replace the switch.
13-3
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Page 443 of 1395

Transfer Assembly
lnspection
@ Make sure tifts, iacks, and satety stands
are placed properly (see section 1).
L Raise the front of the vehicle, and support it with
safety stands (see section 1).
2. Set the parking brake, and block both rear wheels
securely.
3. Shift to neutral oosition.
4. Make a reference mark across the DroDeller shaft
and the transfer assembly flanges,
REFERENCE
8 x 1.25 mm32 N.m (3.3 kg{.m.24 rbf.ftlReplace.
Separate the propeller shaft from the transfer
assemDty.
5.
13-4
6. Set a dial indicator on the transfer assembly flange,
then measure the transfer gear backlash.
STANDARD: 0.06 - 0.16 mm (0.002 - 0.006 in)
COMPAf{ION FI-ANGE
1.lf the measurement is out of specification, remove
the transfer assembly and adjust transfer gear back-
lash (see page 13-44 thru '13-61).
Check the transfer oil seal for damage and fluid
teaKs.
lf oil seal replacement is required, remove the trans-
fer assembly, replace the oil seal, and adjust the
total starting torque (see page 13-44 thru 13-61).
NOTE: Do not replace the oil seal when the transfer
assembly is installed on the transmission.
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Page 447 of 1395
Transmission Assembly
Removal (cont'dl
6. Remove the cotter pins,
washers, plastic washers.
cable from the levers.
then remove the steel
shift cable, and select
1.
8.
Remove the cable bracket from the clutch housing.
Disconnect the vehicle speed sensor (VSS) connec-tor.
-------------.2
13-8
9. Remove the
bolts.
four upper transmission mou nting
10.
11.
Drain transmission fluid (see page '13-3).
Remove the guard bar and the splash shield.
MOUNNNG BOLTS
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Page 451 of 1395

Transmission Assembly
lllustrated Index
Refer to the drawing below for the transmission disassembly/reassembly.Clean all the pans thoroughly in solvent, and drv with comoressed air.
I LuUri""r" utt the parts with MTF before reassembly.
NOTE:
t This transmission uses no gaskets between the major housings; use liquid gasket (p/N 0g718 - 0001 or oE7l8 - 0003)(see page 13-69, 71).. Always clean the magnet @ whenever the transmissjon housing is disassembled.. Inspect all the bearings for wear and operation.
C) sHrFr FoRK ASSEMBLY.Index page, l3-21(a MAINSHAFT ASSEMBLY.Index page, 13-23(9 28 mm WASHER€) 28 mm SPRTNG WASHERO BALL BEARINGa6) OIL SEAL ReDlace.(D 14 x 20 mm DOWEL ptN
G) couNTERSHAFT ASSEMBLY.lndex page, 13-28
NEEDLE SET PLATENEEDLE BEARINGOIL GUIOE C PLATEMAGNETDIFFERENTIAL ASSEMBLY.lndex page, 13-38O-nlNG Beplace.TRANSFER ASSEMBLY.Index page, '13,44
OIL SEAL Replace.VEHICLE SPEED SENSORCLUTCH HOUSINGREVERSE LOCK CAMREVEESE SHIFT HOLDERREVERSE IDLE GEARREVERSE GEAR SHAFTTHRUST WASHER,20 x 36 x 2COLLER, 15 x 20 x 20
aol
@o@@
(D
i9
@@@(9
@@@e3@
13-12
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Page 452 of 1395
C) TRANSMISSION HANGER
O INTERLOCK BOLT
O 32 mm SEALING BOLT
@ STEEL BALL {5/16 in.)
€) SPRING 26.1 mm {1.03 in.l
@ wasHER Replace.
O sET BALL scREw
@ WASHER Replace.
€) FLANGE BOLT
@ oll SEAL Replace.
@ DRAIN PLUG
@ WASHER Replace.
@ FILLER PLUG
@ WASHER Replace.
(9 10 x 12 mm DOWEL PIN(D SPRING 25.6 mm 11.01 in.l
€' THRUST WASHER
@} SHIFT ARM C(3 CONICAL SPRING WASHER
@ SPECTAL BOLT
8] SHIFT ARM COVER
@ OIL SEAL Replace.
€! SHIFT LEVER
@I BREATHER CAP(2! SHIFT ARM SHAFT ASSEMBLY
@ SPRING PIN Replace.O SELECT ARM
€!} THRUST WASHER
@ sTH/REVERSE SELECTRETURN SPRING
@ SELECT RETURN SPRING
€) OIL GUTTER PLATE
@ 78 mm SHIM
@ OIL GUIOE M PLATE
@ SELECT SPRING BOLT
@ OIL SEAL Replace.
@ SELECT LEVER
O BACK.UP LIGHT SWITCH
@ WASHER Replace.OO TRANSMISSION HOUSING
13-13
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Page 453 of 1395
Transmission Assembly
Disassembly
1. Remove the transfer assemblv.
O-RINGReplace.
Remove the shift arm cover assembly, and wiDe itclean of the sealant.
SHIFT ARM COVER ASSEMBLY
10 x 12 mm DOWEL ptN
13-14
3. Remove the interlock bolt.
SELECT ARM
SHIFT ARM SHAFT
Turn the select lever counterclockwise, then removethe shift arm A finger from the groove of the shiftforks.
Turn the shift arm shaft counterclockwise andremove the select arm finger from the groove of theshift arm A. then remove the shift arm shaft assem-blv.
Remove the vehicle speed sensor (VSS).
5.
6.
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