automatic transmission fluid HONDA CIVIC 1996 6.G Workshop Manual
[x] Cancel search | Manufacturer: HONDA, Model Year: 1996, Model line: CIVIC, Model: HONDA CIVIC 1996 6.GPages: 2189, PDF Size: 69.39 MB
Page 56 of 2189
Automatic TtssronSection 14Unit of lengthi mm (in)
fansmtssron -
MEASUREMENTSTANOARD {NEWISERVICE LIMIT
Transmissionfluid
Capacity f (US qt, lmp qti5.9 (6.2, 5.2)Ior overhaul2.7 (2.9, 2.4) for fluid chanse
sgO g8ol85 SO,rzO rSO, rAo,e'0 I 0,Hydraulic
kPa
(kgf/cm' , psa)
Line pressure at 2,000 rpm in E or E position
1st clulch pressure al 2,O0Orpmin D. position
2nd clutch pressure at 2,000 rpm in El position800 - 850 (8.2 -8.7, 120 - 124)760 (7.7, 110)
3rd and 4th clutch pressure at 2,000 rpm in lFl posi-
tion
810- 860 (8.3 - 8.8, 118 - 125)760 (7.8, 1l 1)
Stall speed rpm (Check with vehicle on level ground)2,10028 1_ ffi9
30.0 (1.18)
28.5 \1.12)29.1 (1.15)
28.511.121Untilgrooves worn out
Discoloration
ClutchClutch initial clearance
Clutch return spring free length(A4RA, B4RA Transmission)
lM4RA Transmission)
Clutch disc thicknessClutch plate thickness
Ctr t"h ""d pl"t" thl"t**(A4RA, B4RA Transmission)
1st,2nd3rd,4th
1st2nd,3rd,4thlst2nd,3rd,4th
1st2nd,3rd,4th
Mark 1Mark 2Mark 3Mark 4Mark 5Mark 6Mark 7Mark IMark I
M"*lMark 2Mark 3Mark 4Mark 5Mark 6Mark 7Mark 8Mark 9Mark 10Mark 11Mark 12Mark l3Mark 14Mark 15Mark 16Mark 17Mark 18
Clutch end plate thickness(M4RA Transmassioni
0.65 , 0.85 (0.026 - 0.033)0.40 - 0.60 (0.016 - 0.024)
32.0 (1.26)
30.s (1.20i
31 .1 11.22130.5 (1.20)
1.88 - 2.00 {0.074 - 0.079)
1.55 - 1.6510.061 -0.065)
1.95 - 2.05 (0.077 0.081)
2.05 2.10 (0.081 - 0.083)2.15 - 2.20 (0.085 - 0.087)2.25 - 2.30 {0.089 - 0.091i
2.35 - 2.40 (0.093 - 0.094)
2.45 - 2.50 (0.096 - 0.098)2.55 - 2.60 (0.100 - 0.102)
2.65 - 2.70 (0.104 0.106)2.75 - 2.80 (0.108 0.110)
2.85 2.90 (0.112 - 0.114)
Discoloration
1
I
IDiscoloration
2.3 - 2.4 {0.091 0.094)2.4, 2.5 {0.094 - 0.098)2.5 2.6 (0.098 - 0.102)2.6 - 2.7 (0.102 - 0.106)
2.7 , 2.8 (0.106 - 0.110)2.8 - 2.9 10.110 0.114)
2.9 - 3.0 (0.114- 0.118)
3.0,3.1 (0.118-0.122)
3.1 - 3.2 \O.122 -0.1261
3.2 - 3.3 {0.126 - 0.130}2.0 - 2.1 (0.079 - 0.083)2.1 - 2.2 (0.083 - 0.087)2.2 - 2.3 (0.087 - 0.091)3.3 - 3.4 (0.130 0.134)
3.4 - 3.5 (0.134 - 0.138)3.5 - 3.6 (0.138 0.142)
3.6 3.7 {0.142- 0.146)
3.7 ,3.8 10.146 - 0.150i
Discoloration
1
I
I
L
I
Discoloration
(cont'd)
3-11
Page 59 of 2189
Standards and ServiceLimits
Section '14Automatic Transmission (cont'd)
UO
MEASUREMENTSTANDARD {NEW}
Wire Dia.o.D.Free LongthNo. ol CoilsHegulator valve spring ARegulato. valve spring BStator reaction springModulator valve springTorque convener check valve springCooler relief valve springRelief valve spring2nd oritice control valve spring1-2 shift valve spring2-3 sh ift valve spring3 4 shift valve spring'l st accumulator spring4th accumulator spring B4th accumulator spring A2nd accumulator spring A3rd accumulator spring A2nd accumulator spring B3rd acc!mulator spring B2nd accumulator spring CLock up shift valve springLock up timing valve springLock-up control valve spring3 4 ofifice control valve springServo control valve springCPC valve springCPB valve spring4th exhaust valve spring
Springs1.8 {0.071)1.8 {0.071)4.5 \O.117)1.4 (0.055)
1.0 10.039)1.0 (0.039)
1.1 (0.043)
0.7 (0.028)
0.9 (0.035)
0.9 (0.035)
0.9 (0.035)
2.1 (0.083)
2.3 (0.091)
2.610.102)2.4 (0.094)
2.8 (0.'110)
1.6 (0.063)
2.2 (0.087)
2.2 t0.041)0.9 (0.035)
0.9 (0.035)
0.7 (0.028)
0.7 (0.028)
1.0 (0.039)
0.6 (0.024)
0.9 {0.035)0.9 (0.035)
14.7 (0.584)
9.6 (0.381)
3s.4 (1.407)
9.4 (0.374)8.4 (0.334)
8.4 (0.334)
8.6 {0.342)6.6 (0.262)
7.6 (0.302)
7.6 (0.302)
7.6 (0.302)16.0 (0.636)10.2lo.402l17.0 {0.676)29.0 (1.152)
17.5 (0.6951
9.0 (0.358)
31.0 (1.220)
14.5 {0.576)7.6 (0.302)
8.1 (0.319)
6.610.262)6.6 (0.262)
8.1 (0.322)
5.6 (0.2231
8.1 10.322)6.1 10.242)
87.8 (3.457)
44.0 i.732l'30.3 (1.193)
35.0 {1.378)33.8 (1.331)
33.8 (1.331)
37.1 (1.461)
34.8 (1.370)
41.3 (1.626)
57.0 (2.2441
51 .0 \2.244189.1 {3.508)51.6 (2.031)
87.0 (3.425)
39.011.535)89.3 (3.516)
20.7 (0.815)
35.1 11.382)68.012.671173.7 12.902)80.7 (3.177)38.0 {1.496)37.5 fi.476)52.1 (2.051)
12.2 (0.480)
47.2 {1.858}36.4 {1.433)
16.511.01.910.94.24.213.422.016.326.826.a16.213.814.22.915.66.12.413.932.045.814.124.620.4
18.319.5
CVTSection 14
3-14
MEASUREMENTSTANDARD INEWISERVICE LIMITTransmissionfluidCapacity f {US qt, lmp. qt)6.4 {6.8, 5.6) for overhaul3.9 (4.1, 3.4) for fluid change
Hydraulicpressure
1kgflcm,, psi)
Forward clutch pressure at 1,500 rpm in E position1.4 - 1.15 114.3 - 11.A,203 - 2531Reverse brake pressure at 1,500 rpm in E position1.4 - 1.75 (14.3 11.8,203 2531Dr;ve pulley pressure at 1,500 rpm in E posrtrono.2 -0.7 12.0 -7.1,28- 1011Driven pulley pressure at 1,500 rpm in N positionr.5 - 2.3 115.3 - 23.5, 218 - 334)Lubrication pressure at 3,000 rpm in E posrtronAbove 0.212,30)Stall speed fpm (Check with vehicle on level ground)
E position
E, E, El positions2,5003,0002,350 - 2,6502,800 - 3, r00ClutchClutch initial clearance Forward clutchStart clutchReverse brakeClutch return spring free length Forward clutchStart clutchReverse brakeClutch disc thickness Forward clutchStart clutchReverse brakeClutch plate thickness Forward clutchSta rt clutchReverse brake
0.6 - 0.8 (0.024 - 0.031)0.5 - 0.7 (0.020 0.028)0.45 - 0.75 (0.018 - 0.030)30.5 {1.201)40.9 (1.610)
29.4 (1.157)
1.88 - 2.00 (0.074- 0.079)1.88 2.00 (0.074 - 0.079)1.94 - 2.06 (0.076 - 0.081)1.95 - 2.05 (0.077 -0.081)
2.25 2.35 (0.089 - 0.093)1.90 - 2.00 (0.075 0.079)
,*x.ar}38.9 (1.531)
27.411.019l'Until grooves worn out
Until grooves worn outDiscolorationDiscolorationDiscoloration
L.
Page 72 of 2189
ILubrication Points
For the details of lubrication points and types of lubricants to be applied, refer to the lllustrated Index and various workprocedures (such as Assembly/Reassembly, Replacement, Overhaul. Installation, etc.) contained in each section.
No.LUBRICATION POINTS
Engine
LUBRICANT
"Energy Conserving" grade oil,The oil container may also display the Apl Certification markshown below. Make sure it says ,,For Gasoline Engines.,,SAE Viscosity: See chart below,
I
TransmissionManualGenuine Honda MTF*1
Genuine Honda Premium FormulaAutomatic Transmission Fluid (ATF)*,
Genuine Honda CVT Fluid*3
Genuine Honda DOT3 Brake Fluid*a
Automatic
CVT
3Brake Line
ClL,tci t""e4
I
Genuine Honda DOT3 Brake Fluid*aPower steering gearboxSteering grease P/N 08733 - BO70EShift lever pivots (manual transmission)Grease with molybdenum disulfide7-:ti
9
10'l'l
l3
14
't7
18
19
20
2122
Release fork (manual trancmi
Shift lever (automatic transmission)Pedal linkageBrake master cylinder pushrod
Super High Temp Urea crease (p/N 08798 - 9OO2)
i Multi-purpose grease
I
I
Honda White Lithium Grease
Multi-purpose grease
Silicone grease
@
Trunk hinges and latch (4-door Sedan and 2-doorCoupe)Door hinges upper and lowerDoor opening detentsHood hinge and hood latch-FUet T ter ttd
Clutch master cylinder pushrodThrottle cable end and throttle linkageRear brake shoe linkagesSteering wheel (back side)
23
E-
Caliper piston seal, dust seal,caliper pin. pistonThrottle cable end (dashboard lower panel)
Power steering system (for cars with p/S)
Air conditioning compressorComDressor oil:SANDEN: SPlo P/N 38897 - p13 -A01AH or 38899 - p13_ A01{For Refrigerant: HFC-134a (R-134a))
CERTIFICATION SEAL
ffi
NorE: The items m arked * 1, *2, +3, *4 and +5 on above chan are described as folows:*1: Always use Genuine Honda Manual Transmission Fluid (MTF). Using motor oil can cause stiffer shifting because itdoes not contain the proper additives.*2: Always use Genuine Honda premium Formula Automatic Transmission Fluid (ATF). Using a non-Honda ATF can affectshift quality.+3: Use Genuine Honda cVTfluid only usingotherfluid can affect tra nsmission operation and may reduce transmission life.*4: Always use Genuine Honda DoT3 Brake Fluid. Using a non-Honda brake fluid can cause corrosion and dec.ease the lifeof the svstem.*5: Always use Genuine Honda Power steering Fluid. using any other type of power steering fluid or automatrc transmissionfluid can cause increased wear and poor steering in cold weather.
4-2
Recommended Engine Oil
Engine oil viscosity forambrent temperature ranges
API SERVICE LABEL
Page 679 of 2189
Automatic Transmission
Special Tools ......... .....'."".'-.-.' 14'2
Description .,....................-...... 14-3
power Flow ......,................. 14"6
Elestronic Control System .... . ................'..'.'.. 14-13
Hvdraulic Control .....'......" 1'l-19
Hydraulic F|ow...... .'.'.".'....11-21
Lock-up System '............ ... t/t'33
Electrical System
Component Locations....,.............'......'.............'.,. 14'39
PCM Circuit Diagram
lA/T Control Syst€m: '96 - 98 Models) .........'.. 1/t-40
PCM Tarminal Volt8ge/Measuring Condhions
{'96 - 98 ModeblA/T Control System ............
PCM Circuit Disgram(A/T Conlrol System: '99 - 00 Modsls) '..........' 14-44
PCM Terminal Voltage/Measuring Conditions('99 - 00 Models)A/T Control System ...
Troubleshooting Proceduros ....
Symptom-to-ComPonent Chari
Efectricaf SFiem - '96 - 98 Models '..-.-..."'.'..11-52
Eloqtrical System -'99 - 00 Modols ... .........". 1+54
EleclricatTroubl$hooting ('96 - 98 Models)
Valve Body
Repair .................... ........'.... 14-139
Valve
Assembly
ATF Pump
1,1-1i10
Inspection ...........'.......... 14-141
Main Valvs Body
Disass€mbf y/lnspoction/R.sssembly .'.'.'.'.. -. -. 1 1-1 12
Secondsry Valve BodY
Disa$embfy/lnspoction/Rsassembly ......'.'.'.'. 11-111
Regulator Valve Body
Disa$embly/lnspoction/Rea3sembly ..........'... 14-1{5
Servo Body
Disassombly/lnsp€ction/Reassembly .".'........ 14-146
Lock-up Valv6 Body
Dis$s.mbf y/ln3poction/Rea$embly .'.. -. -..'.'.' 1 1-1 17
Mainsh!ft
Dkassembly/lnep€ction Reassembly ..'...'........ 14'148
Inspoction .............'..........'. l it-149
Countsrshaft
Disa$embly/lnspeqtion/Rea3sembly .......'...'.. 1a-l51
Dba$ombly/Re$s.mblY11-152
til-46
I rl-48
Troubleshooting Flowcharts
Electrical Troubleshooting ('9!t - 00 Models)
Troublsshooting Flowchart3
Lock-up Control Solenoid vslvo A/B AssemblY
RePlacoment
Shift Cont.ol Solenoid Valve A/B A3sembly
Inspestion
Ona-way Clutch
Disassembh/lrupoction/Rca$embly .. "'........ l4-155
Clutch
lllustlttcd Ind.x {A48A, B4RA Transmlssion) ..' 14-156
tustr.tod Index (MrnA Transmi$ionl ............ til-158
...................... 14-153
L
14-56
1+81'
14-105
1+105
Replacoment ......
Mainshaft/Countorshaft Spo€d Sonsors
Replacemsnt ......'."'........... lit'108
Hydraulic System
Symptom-to-Componeni Chart
Hydraulic Sydemr+109
t4-113
1+116
11-117
Rea$emblY
14-106 Difforrr ial
llhdraied Index........ t4-156
B.ckhrh ln3poction. 14-167
Boaring Roplacemont..-..........11-167
..... 14-108 Diftrrsniial Carrior Repl8cemeni .'.-.............'...' lil-168
Oil Sall Romovalt4-t 59
Oil Soal ln3tallstion/Sidc Clearance'......'.....'... 1'l'169
Torqua Convertcr Housing Boarings
Mlin3haft Besring/Oil Scal Roplac.ment ."..'.. lil-172
Counio6hatt Betring R.plscem.nt ..'...... ....... 14-173
Test.....,......14-106
14-107
14-160
11-162
11-171
11-175
Replacement
Test .....,.,..........
Road Te3t
Linear Solenoid AsssmblY
Stall Speed
lllustrated Indax
Transmission/End Cover'. ....
Transmission Hou3ing,.............'.'......'....""..-.-.. 11-128
Torque Conve.ter Housing/Valvo Body ........... 14-130
End Cover
14-itB Park Stop
1+119 In3pection/Adiustmsnt...'......'.'............'...."""'14-175
Transmbgion
Reassombly
11-122 Torquo Convertet/Drivr Plsie ............'.'............'.. . l4-182
Transmission
11.726 Inrtallation
Tranlmission Housing Boarings
Msinsh.ft /CounteEhaft Bearings
B!pltcomgnt
Rcvo.3s ldlor Gear
lnrtallation
Cooler Flushing ..
Shift Cabls
Test
Fluid Level
Checkin9 .........."..'.'.....
Changing
Pressure Testing
Transmission
Transmission
Rgmoval ..
lil-176
.'..........'.'.'..... 1'l-183
.... lil-187
11-132Adiustmont
RemovaUlnttallation1,1-190
lit-191Transmisgion Housing
Removal ... '.'...... ......'..... 14-l3il
Tolque Convgrter Housing/valvs Body
Rsmoval .........,...... ............. 14-136
Valve CaDs
Description .......'................. t 4'138
Shift lndicator Panel
Adiu3tmant ..'.................. 14-192
ATF Coolor Hoses
Connection ..,............,.,....... l'l-192
Shift Lever .,........
Page 681 of 2189
Description
The automatic transmission is a 3-element torque converter and a dual-shaft electronically controlled unit which provides
4 soeeds forward and 1 reverse.
Torque Convertel, Geats, and Clutches
The torque converter consists of a pump, turbine and stator, assembled in a single unit. They are 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 started. The entire torque converter assembly seryes as a
flywheel while transmiuing power to the transmission mainshaft.
The transmission has two parallel shafts: the mainshaft and the countershaft. The mainshaft is in Iine with the engine
crankshaft. The mainshaft includes the 1st, 2nd and 4th clutches, gears tor 2nd, 4th, reverse and lst (3rd gear is integral
with the mainshaft, while the reverse gear is integral with the 4th gear). The countershaft includes the 3rd clutch, and
gears for 3rd,2nd, 4th, reverse. 1st and park. The gears on the mainshaft are in constant mesh with those on the counter-
shaft. When certain combinations of gears in transmission are engaged by clutches. power is transmitted from the main-
shaft to the countershaft to provide E, ld, E, and E positions.
Electronic Control
The electronic control svstem consists of the Powertrain Control Module {PCM), sensors, a linear solenoid and four
solenojd valves. Shifting and lock-up are electronically controlled for comtonable driving under all conditions. The PCM is
located below the dashboard, under the front lower panel on the passenger's side
Hydraulic Control
The valve bodies include the main vatve body, the secondary valve body, the regulator valve body, the servo body and the
lock-up valve body through the respective separator plates, They are bolted on the torque converter housang
The main valve body contains the manual valve, the 1-2 shift valve. the 2nd orifice control valve, the CPB {Clutch Pressure
Back-up) valve, the modulator valve. the servo control valve, the relief valve, and ATF pump gears The secondary valve
body contains the 2-3 shift valve. the 3-4 shift valve, the 3-4 orifice control valve, the 4th exhaust valve and the CPC (Clutch
pressure Control) valve. The regulator valve body contains the pressure regulator valve, the torque converter check valve,
the cooler relief valve, and the lock-up control valve. The servo body contains the servo valve which is integrated with the
reverse shift fork, and the accumulators. The lock-up valve body contains the lock-up shift valve and the lock-up timing
valve. The linear solenoid and the shift control solenoid valve Ay'B are bolted on the outside of the transmission housing,
and the lock-up control solenoid valve Ay'B is bolted on the outside of the torque converter housing. Fluid from regulator
passes through the manual valve to the various control valves. The clutches receive fluid from their respective teed pipes
or internal hydraulic circuit.
Shift Control Mechanism
Input from various sensors located throughout the car determines which shift control solenoid valve the PCM will activate
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, The shift control solenoid valves A and B are con-
trolled by the PCM.
Lock-up Mechanism
In ,Dt1 position, in 3rd and 4th. and in E position in 3rd, pressurized fluid is drained from the back of the torque 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 as the engine crankshaft. Together with hydraulic control, the PCM optimizes the timing of
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 linear solenoid. When lock-up control solenoid valves A and B activate, the modulator pressure changes The lock-
up control solenoid valves A and B and the linear solenoid are controlled by the PCM.
(cont'd)
14-3
Page 703 of 2189
![HONDA CIVIC 1996 6.G Workshop Manual \
@ Position
As the engine turns, the ATF pump also starts to operate, Automatic transmission fluid (ATF) is drawn from (99) and dis-
charged into (1). Then, ATF flowing from the ATF pump becomes the](/img/13/6068/w960_6068-702.png "HONDA CIVIC 1996 6.G Workshop Manual \
@ Position
As the engine turns, the ATF pump also starts to operate, Automatic transmission fluid (ATF) is drawn from (99) and dis-
charged into (1). Then, ATF flowing from the ATF pump becomes the")
\
@ Position
As the engine turns, the ATF pump also starts to operate, Automatic transmission fluid (ATF) is drawn from (99) and dis-
charged into (1). Then, ATF flowing from the ATF pump becomes the line pressure (1). The line pressure (1) is regulated
by the regulator valve. The torque conv€rter inlet pressure (92) enters (94) of the torque converter through the lock-up
shift valve and discharges into (901. The torque converter ch€ck valve prevents the torque converter pressure from rising'
Under this condition, the hydraulic pressure is not applied to the clutches'
NOTE: When used, "1eft" or "right" indicates direction on the hydraulic circuit'
14-25
Page 795 of 2189
Fluid Level
Ghecking
NOTE: Keep all foreign particles out of the transmis-
sron.
1.Warm up the engine to normal operating tempera-
ture (the radiator fan comes on)
Park the vehicle on the level ground, then turn off
the engrne.
Remove the dipstick (yellow loop) from the trans-
mission. and wipe it with a clean cloth.
Insert the dipstick into the transmrssron
Remove the dipstick and check the fluid level lt
should be between the upper mark and lower
marks.
UPPER MABKLOWER MARK
lf the level is below the lower mark, pour the recom-
mended fluid into the tiller hole to bring it to the
upper mark. Always use Genuine Honda Premium
Formula Automatic Transmission Fluid (ATF). Using
a non-Honda ATF can affect shift quality
K
L
DIPSTICK IYELLOW LOOPI
7. Insert the dipstick back into the transmission in the
direction shown.
FRONT
Installthe dipstick in the extent
of the direction shown.
14-117
Page 796 of 2189
Fluid Level
Changing
NOT€: Keep all foreign particles out of the transmis-sion.
'1.Bring the transmission up to operating temperature(the radiator fan comes on) by driving the vehicle.
Park the vehicle on the level ground, and turn theengine off.
Remove the drain plug. and drain the automatictransmission fluid (ATF).
NOTE: lf a cooler flusher is to be used, see page 14-187 and 14-188.
TRANSMISgION END OOVER
DNAIN PLUG18 x 1.5 mm49 N.m (5.0 kgtm, 36lbf.ftlSEALING WASHERReplace.
Reinstall the drain plug with a new sealing washer,then refill the transmission with the recommended
fluid into the filler hole to the upper mark on thedipstick. Always use Genuine Honda premium
Formula Automatic Transmission Fluid (ATF). Usinga non-Honda ATF can aftect shift quality.
Automatic Transmission Fluid Capacity:
2.7 | |'2.9 US ql,2.a lmp qtl at Ghlnging
5.9 f 16.2 US qt. 5.2 lmp qt) at overhaul
I
14-11A
Page 801 of 2189
6. Remove the transmission housing mounting bolts
and the rear engine mounting bolt.
Disconnect the shift control solenoid, the linear sole-
noid, and the mainshaft speed sensor connectors'7.
SHIFT CONTROLSOLENOID CONNECTORLINEAR SOLENOIDCONNECTOR
MOUNTING BOLTS
BRACKET
8. Remove the drain plug, and drain the automatic
transmission fluid (ATF). Reinstall the drain plug
with a new sealing washer.
DRAIN PLUG18 x 1.5 mm'9 N m t5 o kgf'm' 36 lbf'ft|
9. Remove the splash shield.
Replace.
SPLASH SHIELD
{cont'd)
14-123
Page 873 of 2189
Description
The Continuously Variable Transmission (CVT) is an electronically controlled automatic transmission with drive and driv
en Oullevs, and a steel belt. The CVT provides non stage speeds forward and one reverse. The entire unit is positioned in
line with the engine.
Transmission
Around the outside of the flywheel is a ring gear which meshes with the starter pinion when the engine is being staned.
The transmission has four parallel shafts: the input shaft, the drive pulley shaft. the driven pulley shaft, and the secondary
gear shaft. The input shaft is in line with the engine crankshaft. The drive pulley shaft and the driven pulley shaft consist of
movable and fixed face pulleys. Both pulleys are linked by the steel belt.
The input shaft includes the sun gear. The drive pulley shaft includes the forward clutch which mounts the carrier assem-
bly on the forward clutch drum. The carrier assembly includes the pinion gears which mesh with the sun gear and the ring
gear. The ring gear has a hub-mounted reverse brake disc.
The driven pulley shaft includes the start clutch and the secondary drive gear which is integral with the park gear' The sec-
ondary gear shaft is positioned between the secondary drive gear and the final driven gear. The secondary gear shaft
includes the secondary driven gear which serves to change the rotation direction. because the drive pulley shaft and the
driven oullev shaft rotate the same direction. When certain combinations of planetary gears in the transmission are
engaged by the clutches and the reverse brake, power is transmitted from the drive pulley shaft to the driven pulley shaft
to provide E, E, E, and El.
Electronic Control'96 - 98 Models:
The electronic control system consists of the Transmission Control Module (TCM), sensors, three linear solenoids, and a
inhibitor solenoid. Shifting is electronically controlled under all conditions'
The TCM is located below the dashboard, behind the kick panel on the driver's side.'99 - 00 Models:
The electronic control svstem consists of a Powertrain Control Module (PCM), sensors, three linear solenoids and an
inhibitor solenoid. Shifting is electronically controlled under all conditions. A Grade Logic Control System to control shift-
ing in E position while the vehicle is ascending or descending a slope.
The PCM is located below the dashboard, under the kick panel on the passenger's side.
Hydraulic Control
The lower valve body assembly includes the main valve body, the Pressure Low (PL) reguiator valve body, the shift valve
body, the start clutch control valve body, and the secondary valve body. They are positioned on the lower part of the
transmission housing.
The main valve body contains the Pressure High (PH) control valve, the lubrication valve, and the pitot regulator valve.
The secondary valve body contains the PH regulator valve, the clutch reducing valve, the start clutch valve accumulator,
and the shift inhibitor valve. The PL regulator valve body contains the PL regulator valve and the PH-PL control valve
which is ioined to the PH,PL control linear solenoid. The inhibitor solenoid valve is bolted on the PL regulator valve body.
The shift valve body contains the shift valve and the shift control valve. which is joined to the shift control linear solenoid.
The start clutch control valve body contains the start clutch control valve, which is joined to the start clutch control linear
solenoid. The linear solenoids and the inhibitor solenoid are controlled by the TCM or PCM. The manual valve body which
contains the manual valve and the reverse inhibitor valve, is bolted on the intermediate housing.
The ATF pump assembly is located on the transmission housing, and is linked with the input shaft by the sprockets and
the sprocket chain. The pulleys and the clutch receive fluid from their respective feed pipes, and the reverse brake receives
fluid from internal hydraulic circuit.
Shift Control Mechanism
Input from various sensors located throughout the vehicle determines which linear solenoid the TCM or PCM will activate.
Activating the shift control linear solenoid changes the shift control valve pressure, causing the shift valve to move. This
pressurizes the drive pulley pressure to the drive pulley and the driven pulley pressure to the driven pulley and changes
their effective pulley ratio. Activating the start clutch control linear solenoid moves the start clutch control valve. The start
clutch control valve uncovers the port, providing pressure to the start clutch to engage it(cont'd)
14-195
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