four wheel drive ACURA INTEGRA 1998 Service Repair Manual

Description
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The automatic transmission is a combination of a 3-element torque converter and triple-shalt electronically controlled
automatic transmission which provides 4 speeds forward and 1 speed reverse. The entire unit is positioned in line with
the engrne.
Torque Converter, Gears, and Clutches
The torque converter consists of a pump, turbine, and stator, assembled in sigle unit. The torque converter is connected to
the engine crankshaft so they turn torether as a unit as the engine turns. Around the outside of the torque convener is a
ring gear which meshes with the starter pinion when the engine is being started. The entire torque converter assembly
serves as a flywheel while transmitting power to the transmission mainshaft.
The transmission has three parallel shafts; the mainshaft. the countershaft, and the sub shaft. The mainshaft is in-line with
the engine crankshaft.
The mainshaft includes the 1st, and 2ndl4th clutches,and gear for 3rd, 2nd, 4th, reverse, and 1st. (3rd gear is integral with
the mainshaft, while reverse gear is integral with the 4th gear.)
The countershaft includes the 3rd clutch and gears for 3rd,2nd, 4th, reverse, 1st, and parking. Reverse and 4th gears can
be loched to the countershaft at its center,providing 4th gear or reverse, depending on which way the selector is moved.
The sub-shaft includes the 1st-hold clutch and gears fo 1st and 4th.
The gears on the mainshaft are in constant mesh with those on the countersahft and sub-shaft.When certain combinations
of gears in the transmission are engaged by clutches. power in transmitted from the mainshaft to the countershaft via the
sub-shaft to orovude oil, lo'1. E, E. and E.
Electronic Control
The electronic control svstem consists of the Transmission Control Module (TCM), sensors, and four solenoid valves.
Shilting and lock-up are electronically controlled for comfortable driving under all conditions.
The TCM is located below the dashboard, behind the lelt side kick panel on the driver's side.
Hydraulic Control
The valve bodies include the main valve body, the secondary valve body, the regulator valve body, the serbvo body, and
the lock-up valve body, through the respective separator plates, They are bolted to the torque converter housing,
The main valve body contains the manual valve, the 1-2 shift valve, the 2-3 shitt valve, the Clutch Pressure Control
lCPC) valve, the 4th exhaust valve, the reliel valve, and the ATF pump gears.
The secondary valve body contains the 4-3 kick-down valve, the 3-2 kick-down valve, the 2-3 orifice control valve, the
3-4 shift valve, the orilice control valve, the modulator valve, and the servo control valve.
The regulator valve body contains the pressure regulator valve, the lock-up control valve, the torque converter check
valve, and the cooler check valve.
The servo body contains the servo valve, which is integrated with shift fork shaft, the throttle valve B, and the accumula-
tors.
The lock-up valve body contains the lock-up shift valve and the lock-up timing B valve, and is bolted to the regulator valve
ooqy.
Fluid from the regulator passes through the manual valve to the various control valves.
Shift Control Mechanism
Input to the TCM from various sensors located throughout the car determines which shift control solenoid valve should
be activated. Activating a shitt control solenoid valve changes modulator pressure, causing a shift valve to move. This
pressurizes a line to one ol the clutches, engaging that clutch and its corresponding gear.
Lock-uD Mechanism
In @ position, in 2nd, 3rd and 4th, and @ position in 3rd, pressurized fluid can be drained lrom the back oI the tor-
que converter through a fluid passage, causing the lock-up piston to be held against the torque converter cover. As this
takes place, the mainshaft rotates at the same speed as the engine crankshaft. Together with hydraulic control, the TCM
optimizes the timing of the lock-up mechanism.
The lock-up valves controlthe range of lock-up according to lock-up control solenoid valves A and B, and throttle valve B.
When lock-up control solenoid valves A and B activate, modulator pressure changes. Lock-up control solenoid valves
A and B are mounted on the torque converter housing, and are controlled by the TCM.
(cont'd)

Limited Slip Differential (818C5 engine)
Description
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1. Function
Operation of the limited slip differential is dependent upon the eight pinion gears that are in mesh with the two sidegears. They transfer the driving power to the driving axles as well as permjt the outside wheel to turn more times thanthe inside wheel when the vehicle goes around a turn. All gears are helically cut so that this differential action is limitedby the friction created between each gear and differential carrier when either wheel slips.
2. Construction
The unit consists of the two side gears, four short pinion gears, four long pinion gears, two thrust washers, a centerwasher, and a carrier that houses the gears and washers. One shon and one long pinion gear are in mesh with eachother and are allowed to walk around the side oears.
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@
a,
e Differentiatcarrier
a Thrust washer
@ Left side gear
O Center washerg Right side gear
O Pinion gear ong)O Pinion gea r (short)
Ooeration
. Straight-load driving
The differential carrier and gears rotate together as a unit when both wheels rotates at the same speed. Turningeffon from the final driven gears are directly transmitted to both wheets.
(cont'd)
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15-21

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Erasing the DTC Memory
To erase the DTC(S) from the SRS unit, use a Honda
PGM tester (see the Honda PGM Tester SRS vehicle
System Supplement) or the following procedure.
1. Make sure the ignition switch is OFF.
2. Connect the SCS service connector to the MES con-
nector (2P). Do not use a jumper wlre.
MEMORY EMSESIGNAL {MESI CONNESTOR I2P)
[GRN, GBNI or IWHT, BLKI
Turn the ignition switch ON (ll).
The SBS indicator light comes on for about six sec-
onds and goes off. Remove the SCS service connec-
tor from the MES connector (2P) within four seconds
after the SRS indicator light went off.
The SRS indicator light comes on again. Reconnect
the scs service connector to the MES connector
(2P) within the four seconds after the SRS indicator
light comes on.
The SRS indicator light goes off. Remove the SCS
service connector from the MES connector (2P)
within four seconds.
The SRS indicator light indicates that the memory is
erased by blinking two times.
Turn the ignition switch OFF. and wait for ten sec-
onos.
Troubleshootin g Intermittent
Failures
lf the.e was a malfunction, but it doesn't recur, it will be
stored in the memory as an intermittent failure, and the
SRS indicator light comes on,
Atter chocking ths DTC, troubleshoot as follows:
1. Read the DTC (see "Reading the DTC").
2. Erase the DTC memory (see "Erasing the DTC
Memory").
3. With the shift l€ver in neutral, turn the ignition switch
ON (ll), and let the engine idle.
4. The SRS indicator light comes on for about six sec-
onds and then goes off.
I o"* 1--
ONllI
Shake the wire harness and the connector, take a test
drive (quick acceleration, quick braking, cornering),
and turn the steering wheel fully left and righi, and
hold I there for fve to ten s€conds lo 6nd tt|e caus€
of the intermnem farlure
It lhe problem .!curs, lha SRS nd'calor r'ghl will
$aY on.
,l soc or less
Problem recurs, Iight stays on
lf vou can't duplicate the intermittent failure, the sys-
tem is OK at this time.SRS indic.lollight
MESconnaclottarrninlll
CONNECTED
DISCONNECTED
23-289

Airbag
Replacement (cont'd)
LOWERMOUNTINGNUTS
Fror|t P..s6nger'r Side:
. Remove the tour mounting nuts from the bracket.. Lift the front passenger's airbag out of the dashboard
by covering the lid and dashboard with a cloth. andprying carefully with a flat-tip screwdriver.
NOTE: The lid of the airbag has pawts on its sidewhich attach it to the dashboard.
CAUTION: Be sure to install the SRS wiring so that it isnot pincbed or interfering with other parts.
5. Install the new airbag(s):
Driver's Side: Place the driver's airbag into the steeringwheel. and secure it with new Torx bolts.
TORX BOLT9.8 N.m 11.0 kgf.m, 7.2 tbf.ft)
TORX BOLT9.8 N.m lt.o kgt m,7.2lbf,ftl Reptace.U36 a Torx T30 bit.
Front Paseenge/s Side:
Place the front passenger's airbag into the dash,bosrd.
Loosely install all four mounting nuts.Tighten the upper two nuts first, then tighten thelower two nuts. Adjust the lower mounting bracket ifnecessarv.
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MOUNTING NUTS9.8 N.m (1.0 kgf.m. 7.2 lb{.ftlReplace.
Us€ a Torx T30 bit.
MOUNTING NUTS

SRS Unit
Replacement
CAUNON:
. Betore disconnecting the SRS main harness 18P con-
nector, disconnect the aitbag connectors.
. During installation or replacement, do not bump
(impact wrench, hammer etc.) the al€a near the SRS
unit.
. Do not damage the SRS unit terminals or connec-
tors.
. Do not disassemble the SRS unit; it has no service-
able parts.
. Store the SRS unit in a clean, dry area.
. Do not use any SRS unit which has been subiected
to water damage or shows signs of being dtopped ol
improperly hsndled, such as dents, cracks or detor-
mation.
Disconnect the baftery negative cable, then discon-
nect the positive cable from the battery, and wait at
least three minutes.
Disconnect the airbag connectors. (When discon-
nected. the airbag connectors are automatically
shorted.)
Driver's Side:
. Remove the access panel from the steering
wheel, then disconnect the 2P connector
between the driver's airbag and cable reel (see
page 23-285).
Front Passenger's Side:
. Disconnect the 2P connector between the front
passenger's airbag and SRS main harness (see
page 23-285).
3. Remove the right side cover from the SRS unit.
SRS UNIT
TORXBOLTSUse a TorxT30 bir.
SIDEcovEn
4. Remove the left side cover from the SRS unit, then
disconnect the SRS main harness 18P connector
from the SRS unit.
sRsHARNESS18P CONNECTOR
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TORXBOLTSU36 a ToaxT30 bh.
SIDECOVER
Remove the four Torx bolts from the SRS unit, then
pull out the SRS unit from the driver's side.
23-326?\
SRS UNIT

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Design Specifications
x1: At 6,000 engine rpm*2: At 7,600 engine rpm
0
(cont'd)
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ITEMMETRICENGLISHNOTES
DIMENSIONSOverall Length 3-door4-doorOverall WidthOverall Height 3-door4-doorWheelbase 3-door4-doorTrack F/R
Ground Clearance
Seating Capacity
4,380 mm4,525 mm1,710 mm1,335 mm ]1,370 mm ]2,57O mm2,62O mm 11 ,415/1,470 mm I1,480/1,470 mm I1s0 mm I140 mm IFour (3-door),
172.4 in178.1 in67.3 in52.6 in53.9 in101.2 in103.1 in58.1/57.9 in58.3/57.9 in5.9 in5.5 tnFive (4-door)
Except Type RType RExcept Type RType R
weisht (usA)Gross Vehicle Weight Rating (GVWR)3.680 rbs
Weight (CANADA)Gross Vehicle Weight Rating (GVWR)1,670 kg
ENGINEType
Cylinder ArrangementBore and Stroke
Displacement
Compression Ratio
Valve Train
Lubrication SystemOil Pump Displacement
Water Pump Displacemenl
Fuel Required
8188l engine
818C1, Bl8C5 engines
81881 engine818C1, 818C5 engines81881 engine818C1, B18C5 engines81881 engine818C1 engine818C5 engineB1881 engine818C1, B18C5 engines
81881 engine818C1, B18CS enginesB1881 engine818C1, 818C5 enginesB1881 engine
818C1,818C5 engines
Water-cooled. 4-stroke DOHCgasoline engineWater-cooled, 4-stroke DOHCVTEC gasoline engineInline 4-cylinder, transverse81.0 x 89.0 mm | 3.19 x 3.50 in81.0 x 87.2 mm | 3.19 x 3.43 in1,834 cm3 (m/ ) | 112 cu-in1,797 cm3 (m/ ) | 110 cu-in9.210.010.6Belt driven, DOHC 4 valves per cylinderBelt driven, DOHC VTEC4 valves per cylinderForced and wet sump, trochoid pump50 f (53 US qt, 44 lmp qt)/minute*'71 ( (75 US qt,62 lmp qt)/minute*' :
140 I 1148 US qt. 123 lmp qtl/minute*1140 t (148 US qt, 123 lmp qt)/minute*2UNLEADED gasoline with 86 PumpOctane Number or higherPremium UNLEADED gasoline with91 Pump Octane Number or higher
STARTERTypeNormal OutputNominal VoltageHour RatingDirection of RotationWeight MffAIT
Gear reductionMfi:1.2 kW, A,/T: 1.4 kW12V ,
30 secondsClockwise as viewed from gear end3.5 ks | 7.7 lbs3.7 kg | 8.2 lbs
CLUTCHClutch Type
Clutch Facing Area
M/TAfiM/T 81881, 818C1 engines818C5 engine
Single plate dry, diaphragm springTorque converter203 cm2 , 31 sq-in176 cm2 | 27 sq-in
TRANSMISSIONTransmission Type
Primary Reduction
M/TAITSynchronized S-speed forward, 1 reverseElectronical ly control led4-speed automatic, 1 reverseDirect 1 : 1
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