hose HONDA INTEGRA 1994 4.G Repair Manual

The Automatic Transmission is a combination of a 3-e,ement torque convefter and triple-shaft electfonically controlled
automatic transmission which provides 4 speeds forward and 1 speed reverse. The entire unit is positioned in line with
the engine.
Torque Converter, Gears and Clutches
The torque converter consists of a pump, turbine and stator assembly in a single unit, The torque converter is connected
to the engine crankshaft so they turn together as a unit as the engine turns. Around the outside of the torque converter
is a ring gear which meshes with the starter pinion when the engine is being staned. The entire torque converter assem-
bly serves as a flywheel while transmitting power to the transmission mainshaft.
The transmission has three parallel shafts, the mainshaft. countershaft and sub-shaft. The mainshatt is in line with the
engine crankshaft.
The mainshaft includes the clutches for 1 st, and 2ndl4th, and gears for 3rd. 2nd, 4th, reverse and l st (3rd gear is in-
tegral with the mainshaft, while reverse gear is integral with the 4th gear).
The countershaft includes the 3rd clutch and gears Ior 3rd, 2nd,4th, reverse, lst and parking. Reverse and 4th gears
can be locked to the countershaft at its center, providing 4th gear or reverse, depending on which way the selector is moved.
The sub-shaft includes the lst-hold clutch and gears for 1st and 4th
The gears on the mainshait are in constant mesh with those on the countershaft and sub-shaft. When certain combina-
tions of gears in the transmission are engaged by the clutches, power is transmitted from the mainshaft to the counter-
shaft via the sub-shatt to provide @, E, tr. tr and @ position.
Electronic Control
The electronic control system consists of the Transmission Control Module {TCM), sensors, and 4 solenoid valves. Shift-
ing and lock-up are electronically controlled for comfortable driving under all conditions.
The TCM is located below the dashboard, behind the left side kick panel on the driver's side.
Hydraulic Control
The valve bodies include the main valve body, secondary valve body, regulator valve body. servo body, and lock-up valve
body throuqh the respective separator plates.
They are bolted on the torque converter housing.
The main valve body contains the manual valve, 1-2 shift valve, 2-3 shift valve, Clutch Pressure Cont.ol (CPC) valve,
4th exhaust valve, relief valve, and oil pump gears.
The secondary valve body contains the 4-3 kick-down valve,3-2 kick-down valve,2-3 orifice cont.ol valve, 3-4 shitt
valve, orifice control valve. modulator valve, and servo control valve
The regulator valve body contains the pressure regulator valve. lock-up control valve, torque converter check valve, and
cooler check valve.
The servo bodv contains the servo valve which is integrated with the reverse shift fork, throttle valve B, and accumulators.
The lock-ug valve bodv contains the lock-up shift valve and lock-up timing B valve. and is bolted on the secondary valve
body.
Fluid from the regulator passes through the manual valve to the various control valves.
Shitt Control Mochanism
Input to the TCM i.om various sensors located throughout the car determines which shift control solenoid valve should
be activated.
Activating a shift control solenoid valve changes modulator pressure, causing a shift valve to move. This pressurizes
a line to one of the clutches. engaging that clutch and its corresponding gear.
Lock-up Mechanism
In @ position. in 2nd, 3rd and 4th, and E position in 3rd, pressurized tluid can be drained from the back of the tor-
que converter through an oil passage, causing the lock-up piston to be held against the torque converter cover. As this
takes Dlace, the mainshaft rotates at the same speed as the engine crankshatt. Together with hydraulic control, the TCM
optimizes the timing ol the lock-up mechanism.
The lock-up valves control the 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)
14-3

Number of @indicator light
blinks while
Service Check
Connector is
connected with
the special tool.
@ indicator
lightPossible CauseSymptomRefer to
page
'loBlinksDisconnected engine coolant tempera-
rure (ECT) sensor connector
Short or open in ECT sensor wire
Faulty ECT sensor
Lock-up clutch does not
engage.14-68
1lOFFDisconnected ignition coil connector
Short or open in ignition coil wire
Faulty ignition coil
. Lock-up clutch does not
engage.'t 4-7 0
13Blinks. Shon or open in LT GRN wire between
the D3 terminal and ECM. Faulty barometric pressure {BARO)
sensor
NOTE: The BARO sensor is built into
the ECM
. No specific symptom
appears.
14-7 1
14Blinks. Short of open in FAS {YEL} wire be-
tween the D16 terminal and ECM. Faulty ECM
. Transmission jerks hard
when shitting.
't5OFFDisconnected mainshaft speed sensor
connecror
Short or open in mainshaft speed sen-
sor wire
Faulty mainshaft speed sensor
. Transmission jerks hard
when shifting.
14-75
SymptomProbable CauseRet.page
LQ! indicator light is on steady, not blinking whenever the ignition is on.14-77
[Q3] indicator light does not come on for 2 seconds after ignition is first
turned on.14-78
Lock-up clutch does not have duty operation (ON-OFFI.Check A/C signal with
A/C on.14-80Lock-up clutch does not engage.
Shitt leve. cannot be moved lrom @ position with the brake pedal
depressed.Check brake switch signal,14-41
It the self-diagnosis LQ4 indicator light does not blink, perform an inspection according to the table below.
a lf a customer describes the symptoms for codes 3, (yet the LQ! indicator light is not blinkingl, 6, 1 1 or 15, it will
be necessa.y to recreate the symptom by test driving. and then checking the @ indicator light with the ignition still
oN.
e lt ttre @ indicator light displays codes olher than those listed above or stays lit continuously, the TCM is faulty.. Sometimes the Lqd indicator light and the Malfunction Indicator Lamp (MlL)/Check Engine light may come on simul-taneously. lf so, check the PGM-Fl system according to the numbe. of blinks on the MIL/Check Engine light. thenreset the memory by removing the BACK UP fuse in the unde.-hood fuse/relay box for more than 1O seconds. Drive
the vehicle for several minutes at speed over 30 mph (5O km/h), then recheck the MIL/Check Engine light.
NOTE:
. PGM-FI system
The PGM-Fl system on this model is a sequential multiport fuel injection system.a Disconnecting the BACK UP luse also cancels the radio anti-theft code. preset stations and the clock setting. Get
the fuse so vou can reset them.the customer's code number and make note ot the radio
14-51

Pressure Testing
a While testing, be caretul of the rotating flont wheels.a Make aura litts, jacks, and sat€ty stands alo placedplop6rly {see section 1}.
CAUTION: Betore t€sting, be sure the transmission fluidis tilled to rh6 ploper l€vet.
1. Raise the car (see section i),
2. Warm up the engine {the cooling fan comes onl, thenstop the engine and connect a tachometer.
3. Connect the oil pressure gauge to each inspectionholels).
TOROUE: 18 N.m (1.8 kgf.m, 13 tbf.fr)
CAUTION: Connect ths oil prsssure gauge s€cur€_ly; be sule not to allow dust and other foleign pani_cl6s to 6nt€1 th€ inspection holo.
A/T OIL PRESSURE GAUGESET WPANEL07406-002oi+oo
A/T LOW PRESSUREGAUGE W/PANEL07/rO6-0O70300
A/T OIL PRESSURE HOSE,22'10 mmOTMAJ_PY4OI TA{4 Roquirod)
A/T OIL PRESSUBE HOSEADAPTEROTMAJ - PY/+O12014 Roqui.odl
NOTE: Use the A/T Oil Pressure Gauge Set (07406_O02OOO3) or A/T Low Pressure Gauge (07406-OOTO0OO). and the oil pressure gauge hoses and adap_ters shown above.
14-94
4. Start the engine, and measure the respective pres-
sure as follows.
a Line Pressure
a Clutch Pfessure
a Clutch Low/High Pressure
a Throttle B Pressure
5. Install a new washer and the sealing bolt in the in-spection hole and tighten to the specified torque.
TOROUE: 18 N'm {1.8 kgf.m, 13 tbf.ft)
NOTE: Do not reuse old aluminum washers.
a Line Pressure M€asurement
- 1 . Set the parking brake and block both rear wheelssecurely.
-2. Run the engine at 2,OOO rpm
-3. Shift the selecr lever to S or @ position.
-4. Measure line pressure.
LINE PRESSUREINSPECTION HOLE
NoTE: Higher pressures may be indicated it measurements are made in selector positions other than @ or @ position.
PRESSURESELECTOR
POStTTONSYMPTOMPROBABLE CAUSEFLUID PRESSURE
StandardService Limit
LineNo'ENo (or low)
lrne pressureTorque converter,
orl pump, pressure
regulator, to.que
convener check
valve
83O-88O kPa(8.5-9.O kgf/cm,,
120- I 30 psi)
78O kPa
{8.0 kgl/cm,, 1lO psi}

Transmission
Removal (cont'dl
'1 9.Remove the right tront mount/bracket, then remove
the end ol the throttle cont.ol cable trom the throt-
tle control lever.
Remove the ATF cooler hoses at the joint pipes. Turn
the ends of the cooler hoses up to prevent ATF from
flowing out, then plug the joint pipes.
NOTE: Check tor any sign ot leakage at the hosejoints.
THROTTLE CONTROL
23. Place a jack under the transmission, raise the lrans-
mission just enough to take weight off ol the
mounts. then remove the transmission mount.
20.
RrcHT FRoNT iiouNT/BRAcKET BoLTsATF COOLERHOSESReplace.24. Remove the t.ansmission housing mounting bolts
and rear engine mounting bolts.
25. Pull the transmission away from the engine until it
clears the 14 mm dowel Dins, then lower it on the
transmission iack.
21. Remove the engine stiftener and totque converter
cover.
22. Remove the eight drive plate bolts one at at time
while rotating the crankshaft pulley.
WASHERSReplace.
'i z/'l e
" (-J t'
14-102

CAUTION: lf either end ot the comprassol attachm€nt
is sel ovsl an araa ol the spdng retaine. which is unsup-
ported by the retum spring. the letainer may be damag6d,
4. Compress the return spring.
Do not set horo.
RETURN SPRING
5.Remove the snap ring. Then remove the special
tools, spring retainer and return spring.
Wrap a shop towel around the clutch drum and ap-
ply air pressure to the oil passage to remove the
piston. Place a finger tip on the other end while ap-
plying air p.essure.
6.
COMPRESSED AIRHOSE NOZZLEOSHA-approved 30 psirype onry
CLUTCH
S AP RING
PISTON
14-145

7.Remove the transmission jack.
Attach the torque converter to the drive plate with
eight bolts and torque:
Rotate the crankshatt as necessary to tighten the
bolts to 1/2 of the specilied torque, then to the final
toaque, rn a cnsscross pattern.
After tighten the last bolts, check that the crankshaft
rotates freely.
TOROUE: 12 N.m {1.2 kgl.m.8.7 lbf.ft}
Install the torque converte. cove. and engine
stiffener.
L
9.
6 r 1.O mm12 N.m 11.2 kgt.m, 8.7 lbl.ltl
10.
12 N.m 11.2 kgf.m,8.7 rbt.ft)
Tighten the crankshaft pulley bolt to specified
rorque.
TOROUE: 177 N.m {18.O kgt.m, 130 lbf'ft}
10 x 1.25 mm44 N'm {4.5 kgf.m.33 rbt'frl
8 x '1.25 mm24 N.m (2.4 kgl.m,17 tbf.trl
lO x '1.25 mm43 N.m14.4 kgf.m, 32 lbf.ltl
11. Connect the ATF cooler hoses to the joint pipes.
12. Connect the throttle control cable to the throttle con-
trol lever and install the right front mount/bracket.
THROTTLE CONTROL LEVERTHROTTLE CONTROLCABLE END
JOINT PIPES
12 x 1 .25 mm64 N.m {6.5 kgf.m,47 tbf.ftlReplace.
ATF COOLER HOSES10 x 1.25 mm RIGHT44 N.m (4.5 kgf'm, FRONT33 rbl.ftl MoUNT/BRACK€T
t5.Install the control lever with a new lock washer to
the control shalt. then install the shift cable cover.
CAUTION: Take care not to bend the shift cable.
CONTROLSHAFT
SHIFT CABLE
CONTROL LEVER
6 x 1.0 mm12 N.m{1.2 kgf.m,8.7 lbl.rr)
SHIFT CABLECOVER
LOCK6 x 1.0 mm14 N.m 11.4 kgl.m,10 lbf.fr)
(cont'dl
Replace.ASHER
14-165

Transmission
Cooler Flushing
S!@ ro prevent iniury to tace and eyes, always
wear safety glas$es or a tace shield when using the trans-
mission flusher.
NOTE: This procedure should be performed before rein-
stalling the transmission.
1. Check tool and hoses for wear or cracks before
using.
lf wear or cracks are found, replace the hoses be-
fore using.
2. Using the measuring cup, tillthe tank with 21 ounces
{approximately 213 lulll of biodegradable tlushing
fluid (J35944-20). Do not substitute with any other
fluid.
Follow rhe handling procedure on the fluid container.
Secure the tlusher filler cap and pressurize the tank
with compressed air to between 550-829 kPa(5.6-8.45 kgt/cm,, 80- 120 psi),
NOTE: The air line should be equipped with a water
trap to ensure a dry air system.
Hang the tool under the vehicle.
Attach the discharge hose of the tank to the return
line of the transmission cooler using a clamp.
Connect the drain hose to the inlet line of the trans-
mission cooler using a clamp. Securely clamp the op-posite end of the drain hose to a bucket or floor drain.
6.
DRAIN HOSE
TRANSMISSION
TRANSMISSIONCOOLER FLUSHEBCommorcially AvailabloKENT MOORE #J38405_A
DISCHARGE HOSE
14-168
BUCKET
7. With the water and air valves off. attach the water
and air supplies to the flusher. (Hot water it
available.)
OFF
8. Turn on the flusher water valve so water will tlow
through the oil cooler for 1O seconds. lf water does
not flow through the oil cooler it is completely
plugged, cannot be flushed, and must be replaced.
9. Depress the trigger to mix the tlushing lluid into the
water tlow. Use the wire clip to hold the trigger
oown.
10. While flushing with the water and flushing fluid for
2 minutes. turn the air valve on for 5 seconds every
15-20 seconds to create a surging action.
AIR PRESSURE:
MAX 829 kPa (8.45 kgt/cm,, 12O psi)
1 1. Turn the water valve off. Release the trigger, then
reverse the hoses to the cooler so you can flush in
the opposite direction. Repeat steps 8 through 1O.
12. Release the trigger and allow water only to rinse the
cooler with water for one minute.
13. Turn the water valve off and turn off the water
supply.
14. Turn the air valve on to dry the system out with air
for two full minutes or until no moisture is visible
leaving the drain hose.
CAUTION: Residual moisture in the oil cooler 01
pipes can damage the transmission.
15. Remove the flusher trom the cooler line. Attach the
drain hose 10 a oil container.
16. lnstallthe transmission and leave the drain hose at-
tached to the cooler line.

't 7.Make sure the transmission is in @ position.
Then fill the transmission with ATF and run the en-
gins tor 30 saconds or until spproximately ons quart
iB discharged.
Rsmove the drain hose and reconnect the cooler
return hoae to th€ transmission.
Refillth€ trsnsmission with ATF to the prop€r levol.
18.
19.
FILLER CAP
TOOL MAINTENANCE
1. Empty and rinse aftor each use. Fill the can with
water and pressurize the can. Flush the discharge
line to ensure that the unit is clean.
2. lf discharge liquid does not toam, the orifice may be
blocked.
3. To clean, disconnect the plumbing trom the tank 8t
the large coupling nut.
4. Remov€ the in-line filter trom the discharge side and
clean it necossarv.
5. The fluid orilice is located behind the tilter.
Clean it with the Dick stored in the boftom ot the tank
handle or blow it cl6an with air. Securelv reassem-
ble all Darts.
COUPLII{G I{UT
ORIFICE
FILTER
---0--L--
IO.BI G
14-169

Steering
Special Tools ............. 17-2
Component Location
lndex ................ ...... 17-3
System Description
Ff uid Flow Diagram ......................... 17 -1
Steering Pump ................................. 17-5
Steering Gearbox ............................. 17-7
Troubleshooting
General Troubleshooting ................ 17-10
Noise and Vibration ......................... 17-14
Fluid Leaks ............. 17-16
Inspection and Adiustment
Steoring Operation .......................... 17 -14
Power Assist Check
with Car Parked ........................... 17-18
Steering Linkage and Gearbox ....... 17-19
Pump Beh .............. 17-20
Rack Guide Adjustment ............. ..... 17-21
Ff uid Replacement ...................... ..... 17 -21
Pump Pressure Check .................. .... 17 -22
Ffuid Leakage lnspection ................ 17-23
+ Steering Wheel
Removal ..,,,,,,,........ 17-24
Disassembly/Reassembly ............... 17 -25
fnstallation ,......,,,,,. 17-26
* Steering Column
Removaf .................17-28
Inspection .............. 17-30
Installation ............. 17-31
Power Steering Hoses. Pipes
Replacemont ......... 17-3tl
Power Steering Pump
Removal ................. 17-35
Disassembly .......... 17-35
Reassembly ........... 17-'10
lnstallation ........,..., l7-tltl
Steering Gearbox
Removaf .,.,............. 17-45
Disassembly .......... 17-/E
Reassembly ........... 17-53
lnstallation ............. 17-63
Ball Joint Boot Replacement .......... 17-65
SUPPLEMENTAL RESTRAINT SYSTEM {SRSI
The Integra SRS includes a driver's airbag. located in the steering wheel hub, In addition, all models except the
RS model for Canada have a front passenger's airbag located in the dashboard above the glove box. Information
necessarv to safely service the SRS is included in this Service Manual. ltems marked with an asterisk {') on the
contents page include, or are located near, SRS components. Servicing. disassembling or replacing these items
will require special precautions and tools, and should therefore be done by an authorized Acura dealer.
a To avoid rsndering ths SRS inoporative, which could load to po.sonal iniury 01 d€ath in th€ event ot a ssvare
lrontal collision, all SRS service work muat be performod by an authorizod Acura deal6t.
a lmploper service procodules. including incorloct romoval and installation of the SRS, could lead to personal iniu-
ry caused by unintontional activation ot the airbags.
a All SRS elsctdcal wiring harnesses ara covorod with ysllow insulation. Rolalod compon€nts 8re locatsd in tho
stse ng column, tront console, dashboard, and dashboard lower panel, and in the dashboard above the glove
box. Do not use oloctrical tost equipmoni on thosa cilcuits.
NOTE: The original radio has a coded thett protection circuit. Be sure to get the customer's code number before
- disconnecting the battery.- removing the No. 32 (7.5 A) tuse from the under-hood fuse/relay box.
- removing the radio.
Alter service, reconnect power to the radio and turn it on. When the word "CODE" is displayed' enter the cus-
tomer's 5-digit code to restore radio operation.

Troubleshooting
General Troubleshooting
Check the following betore you begin:
. Has the susp€nsion been modified in a way that would affect steering?. Are tire sizes and air pressure correct?
. ls the steering whe€l original squipment or equivalent?
. ls the power steering pump belt properly adiusted?
o ls steering fluid reservoir filled to proper level?
o ls the engine idle speed correct and steady?
Normal reliel pressure
I
I
Go to pate tu.l t
r Fluid pro$ure is too low:Chock th€ rgturn circuit pipe and hose between thogearbox and pump tor clogging and dotormation.* Fluid pressure is too hioh:Check the pipe and hosg connected from th6 pumpto tho georbox tor clogging and delormation.
Check pump fluid pressurg (soepage 17-221,Measure steady-state fluid pres-sure while idling with the shut-offvalve fully open.Ir shoutd be 1,500 kPa (15 kgtcm', 213 psi) or bolow.
Normal
Check pump fluid pr€ssur€ {se€page 17-221.Measure pump relief pressurewhile idling with the shut-offvalve fully closod.h should be 6,400 - 7,400 kPa {65- 75 kgtcm,, 924 - 1,067 psi)
Check the flow control valve.* Check lhe valve for smooth movement in thg hou6-Ing.* Chock thg reli€f valve for leaks.
Abnormal
I
I
Faulty flowtontroi valve
17-10