Toyota Cressida 1991 User Manual

FOREWORD

This repair manual covers Disassembly, Inspection and Assembly procedures for the following Automatic Transmissions:

Automatic Transmission	Applicable Model
A340E	’91 Supra, ’91 Cressida
A340F	’91 Truck, ’91 4 runner
	”91 Truck, ”91 4 runner
A340H	’91 Truck, ’91 4 runner

For On−vehicle Servicing (Inspection, Adjustment, Troubleshooting, Removal and Installation) of Automatic Transmission, refer to the repair manual for the applicable vehicle model.

Pub. Name	Pub. No.
’91 Supra Repair Manual	RM198U
’91 Cressida Repair Manual	RM200U
’91 Truck Repair Manual	RM201U2
’91 4 runner Repair Manual	RM202U2

All information contained in this manual is the most up−to− date at the time of publication. However, specifications and procedures are subject to change without notice.

TOYOTA MOTOR CORPORATION

IN−2	INTRODUCTION	− How to Use This Manual

HOW TO USE THIS MANUAL

To assist you in finding your way through the manual, the Section Title and major heading are given at the top of every page.

REPAIR PROCEDURES

Most repair operations begin with an overview illustration. It identifies the components and shows how the parts fit together.

Example:

Oil Pump Body	Startor Shaft	100 (7, 10)

Oil Pump Driven Gear

Oil Seal Ring

Oil Pump Drive Gear

♦ Oil Seat

♦ O−Ring

kg−cm (ft−Ib, N−m)

: Specified torque

♦ Non−reusable part

AT5461

INTRODUCTION − How to Use This Manual	IN−3

Illustration:

What to do and where

The procedures are presented in a step−by−step format:

SIllustration shows what to do and where to do it.

SThe task heading tells what to do.

SThe detailed text tells how to perform the task and gives other information such as specifications and warnings.

Example:

Task heading: what to do

7.CHECK PISTON STROKE OF FORWARD CLUTCH

If replacing the disc, plate or flange, check the piston stroke:

Detail text: how to do it

Using a dial indicator (long type pick or SST), measure the forward clutch piston stroke applying and releasing the compressed air (4 − 8 kg/cm2 or 57 − 114 psi or 392 − 785 kPa) as shown.

SST 09350−32014 (09351−32190)

Set part No.

Component part No.

Piston stroke: 1.41 − 1.82 mm (0.0555 − 0.0717 in.)

Specification

This format provides the experienced technician with a FAST TRACK to the information needed. The upper case task heading can be read at a glance and only when necessary, the text below it provides detailed information. Important specifications and warnings always stand out in bold type.

REFERENCES

References have been kept to a minimum. However, when they are required you are given the page to go to.

SPECIFICATIONS

Specifications are presented in bold type throughout the text in the applicable step. You never have to leave the procedure to look up your specs. All specifications are also found in Appendix A, specifications for quick reference.

CAUTIONS, NOTICES, HINTS:

SCAUTIONS are presented in bold type, and indicate there is a possibility of injury to you or other people.

SNOTICES are also presented in bold type, and indicate the possibility of damage to the components being repaired.

SHINTS are separated from the text but do not appear in bold. They provide additional information to help you efficiently perform the repair.

IN−4	INTRODUCTION	− General Repair Instructions

GENERAL REPAIR INSTRUCTIONS

1.		Use fender, seat and floor covers to keep the vehicle
		clean and prevent damage.
2.		During disassembly, keep parts in order to facilitate
		reassembly.
3.		Observe the following:
		(a)	Before performing electrical work, disconnect the
			negative cable four the battery terminal.
		(b)	If it is necessary to disconnect the battery for in-
			spection or repair, always disconnect the cable from
			the negative (−) terminal which is grounded to the
			vehicle body.
		(c)	To prevent damage to the battery terminal post,
			loosen the terminal nut and raise the cable straight
			up without twisting it or prying it.
		(d)	Clean the battery terminal posts and cable termi-
			nals with a shop rag. Do not scrape them with a file
			or other abrasive object.
		(e)	Install the cable terminal to the battery post with the
			nut loose, and tighten the nut after installation. Do
			not use a hammer or such to tap the terminal onto
			the post.
		(f)	Be sure the cover for the positive (+) terminals are
			properly in place.
4.		Check hoses and wiring connectors to make sure
		that they are secure and correct.
5.		Non−reusable parts
		(a)	Always replace cotter pins, gaskets, O−rings and oil
			seals etc. with new ones.
		(b)	Non−reusable parts are indicated in the component
			illustrations by the ”♦” symbol.
	6.	Precoated parts
Seal Lock Adhesive		Precoated parts are the bolts and nuts, which have
		been coated with a seal lock adhesive at the factory.
		(a)	If a precoated part is retightened, loosened or
			caused to move in any way, it must be recoated
			with the specified adhesive.
		(b)	Recoating of precoated parts
			(1) Clean off the old adhesive from the bolt, nut
IN0036			or installation part threads.
			(2) Dry with compressed air.
			(3) Apply the specified seal lock adhesive to the
			bolt or nut threads.
		(c)	Precoated parts are indicated in the component il-
			lustrations by the ”L” symbol.

INTRODUCTION − General Repair Instructions	IN−5

7.When necessary, use a sealer on gaskets to prevent leaks.

8.Carefully observe all specifications for bolt tightening torques. Always use a torque wrench.

9.Use of special service tools (SST) and special service materials (SSM) may be required, depending on the nature of the repair. Be sure to use SST and SSM where specified and follow the proper work procedure. A list of SST and SSM can be found at the back of this manual.

10.When replacing fuses, be sure the new fuse has the correct amperage rating. DO NOT exceed the fuse amp rating or use one of a lower rating.

11.Care must be taken when jacking up and supporting the vehicle. Be sure to lift and support the vehicle at the proper locations.

(a)If the vehicle is to be jacked up only at the front or rear end, be sure to block the wheels in order to ensure safety.

(b)After the vehicle is jacked up, be sure to support it on stands. It is extremely dangerous to do any work on the vehicle raised on jack alone, even for a small job that can be finished quickly.

IN−6	INTRODUCTION	− Abbreviations Used in This Manual

ABBREVIATIONS USED IN THIS MANUAL

ADD	Automatic Disconnecting Differential
A/T ATM	Automatic Transmission
ATF	Automatic Transmission Fluid
B0	Overdrive Brake
B1	Second Coast Brake
B2	Second Brake
B3	First and Reverse Brake
C0	Overdrive Clutch
C1	Forward Clutch
C2	Direct Clutch
D	Disc
Ex.	Except
MP	Multipurpose
O/D	Overdrive
P	Plate
SSM	Special Service Materials
SST	Special Service Tools
w/	With
w/o	Without

AT−3

AUTOMATIC TRANSMISSION − Description

DESCRIPTION

General

The A340E is a 4−speed, Electronic Controlled Transmission (hereafter called ECT) developed for use with high−performance engine. A lock−up mechanism is built into the torque converter.

The A340F automatic transmission is a 4−speed automatic transmission with mechanically controlled 4WD transfer, developed with the aim of producing an easy−driving 4WD vehicle. The transmission section has fundamentally the same construction as the A340E automatic transmission.

The A340H automatic transmission is a 4−speed automatic transmission with electronically controlled 4Wd transfer, developed with the aim of producing an easy driving 4WD vehicle.

The transfer section consists of planetary gears, hydraulic clutches and hydraulic brake. The operation of these is fully controlled by the Engine & ECT ECU.

The A340E, A340F and A340H automatic transmissions are mainly composed of the torque converter, the overdrive (hereafter called O/D) planetary gear unit, 3−speed planetary gear unit, the hydraulic control system and the electronic control system.

Sectional View (A340E)

AT4366

AT−4

AUTOMATIC TRANSMISSION − Description

Sectional View

(A340F)

(A340H)
Torque Converter with
Lock−Up Clutch
O/D Planetary	3−Speed Planetary
Gear Unit	Gear Unit	2−Speed Transfer

Transmission Hydraulic

Control Unit

Transfer Hydraulic

Control Unit

AT5744

AT5068

			AUTOMATIC TRANSMISSION − Description			AT−5
General Specifications
	Type of Transmission					A340E
	Type of Engine					7M−GE, 7M−GTE, 3VZ−E
	Torque Converter	Stall Torque Ratio				Truck : C & C 2.0 : 1 Others 2.1 : 1
		Lock−Up Mechanism				Equipped
		1st Gear				2.804
		2nd Gear				1.531
	Gear Ratio
		3rd Gear				1.000
		O/D Gear				0.705
		Reverse Gear				2.393
		C0	O/D Direct Clutch			2/2
		C1	Forward Clutch			5/5
		C2	Direct Clutch			4/4
	Plates (Disc/Plate)	B2	2nd Brake			5/5
		B3	1st & Reverse Brake			6/6
		B0	O/D Brake			4/3
	Second Coast Brake Band Width			mm (in.)		40 (1.57)
		Type				R
						ATF DEXRON II
	ATF		Capacity	Total		7.2 (7.6, 6.3)
		liters (US qts, Imp. qts)		Drain and Refill		1.6 (1.7, 1.4)

AT−6

AUTOMATIC TRANSMISSION − Description

General Specifications (Cont’d)

Type of Transmission				A340F
Type of Engine				22R−E
Torque Converter	Stall Torque Ratio			2.3 : 1
	Lock−Up Mechanism			Equipped
	1st Gear			2.804
	2nd Gear			1.531
Gear Ratio	3rd Gear			1.000
	O/D Gear			0.705
	Reverse Gear			2.393
	C0	O/D Direct Clutch		2/2
	C1	Forward Clutch		5/5
	C2	Direct Clutch		4/4
Plates (Disc/Plate)	B2	2nd Brake		5/5
	B3	1st & Reverse Brake		6/6
	B0	O/D Brake		4/3
Second Coast Brake Band Width			mm (in.)	40 (1.57)
	Type			ATF DEXRONR II
ATF
		Capacity	Total	7.6 (8.0, 6.7)
		liters
		(US qts, Imp. qts)	Drain and Refill	1.6 (1.7, 1.4)

		AUTOMATIC TRANSMISSION − Description					AT−7
General Specifications (Cont’d)
Type of Transmission							A340H
Type of Engine							3VZ−E
Torque Converter		Stall Torque Ratio					2.1 : 1
		Lock−Up Mechanism					Equipped
		1st Gear					2.804
		2nd Gear					1.531
	Transmission	3rd Gear					1.000
Gear Ratio
		O/D Gear					0.705
		Reverse Gear					2.393
	Transfer	High (H2, H4)					1.000
		Low (L4)					2.659
		C1		Forward Clutch			4/4
		C2		Direct Clutch			3/3
Number of	Transmission	C0		O/D Direct Clutch			1/1
		B2					4/4
Discs and				2nd Brake
Plates
		B3		1st & Reverse Brake			5/5
(Disc
/Plate)
		B0		O/D Brake			3/2
		C3		Transfer Direct Clutch			6/6
	Transfer	C4		Front Drive Clutch			6/6
		B4		Low Speed Brake			7/6
Second Coast Brake Band Width					mm (in.)		40 (1.57)
		Type					ATF DEXRONR II
					Total		Transmission: 10.3 (10.9, 9.1),
ATF							Transfer: 1.1 (1.2, 1.0)
			Capacity liter
		(US qts, Imp. qts)			Drain & Refill		Transmission: 4.5 (4.8, 4.0),
							Transfer: 0.8 (0.8, 0.7)

AT−8

AUTOMATIC TRANSMISSION − Operation

OPERATION

Mechanical Operation

OPERATING CONDITIONS

(A340E, A340F)

O/D Direct

2nd Coast Brake (B1)

1st & Reverse

CIutch (C0)

Forward Clutch (C1)

Brake (B3)

O/D Brake (B0)

Direct

2nd Brake (B2)

Rear Planetary Carrier

Clutch (C )

Rear Planetary Ring Gear

2

O/D Planetary

No. 1 One−Way

Ring Gear

O/D Input Shaft

Clutch (F1)

O/D Planetary

Output Shaft

O/D One−Way

Carrier

Front Planetary

Front & Rear Planetary

Clutch (F0)

O/D Planetary

Ring Gear

Sun Gear

Sun Gear

Front Planetary

No. 2 One−Way

Input Shaft

Carrier

Clutch (F2)

AT2157

f ..... Operating

Shift lever position

Gear position

C0

C1

C2

B0

B1

B2

B3

F0

F1

F2

P

Parking

f

R

Reverse

f

f

f

f

N

Neutral

f

1st

f

f

f

f

D

2nd

f

f

f

f

f

3rd

f

f

f

f

f

O/D

f

f

f

f

1st

f

f

f

f

2

2nd

f

f

f

f

f

f

3rd

f

f

f

f

f

L

1st

f

f

f

f

f

*2nd

f

f

f

f

f

f

* Down−shift only in the L range and 2nd gear − no up−shift.

AT−9

AUTOMATIC TRANSMISSION − Operation

FUNCTION OF COMPONENTS

(A340E, A340F)

NOMENCLATURE	OPERATION
O/D Direct Clutch (C0)	Connects overdrive sun gear and overdrive carrier
O/D Brake (B0)	Prevents overdrive sun gear from turning either clockwise or counterclockwise
O/D One−Way Clutch (F0)	When transmission is being driven by engine, connects overdrive sun gear and overdrive carrier
Forward Clutch (C1)	Connects input shaft and front planetary ring gear
Direct Clutch (C2)	Connects input shaft and front & rear planetary sun gear
2nd Coast Brake (B1)	Prevents front & rear planetary sun gear from turning either clockwise or counterclockwise
2nd Brake (B2)	Prevents outer race of F1 from turning either clockwise or counterclockwise, thus preventing
	front & rear planetary sun gear from turning counterclockwise
1st & Reverse Brake (B3)	Prevents rear planetary carrier from turning either clockwise or counterclockwise
No. 1 One−Way Clutch (F1)	When B2 is operating, prevents front & rear planetary sun gear from turning counterclockwise
No. 2 One−Way Clutch (F2)	Prevents rear planetary carrier from turning counterclockwise

	Front Planetary Carrier
O/D Planetary Carrier	Rear Planetary Carrier

O/D Input

Shaft

				Output Shaft
	O/D Sun Gear	Input Shaft	Sun Gear	Rear Planetary Ring Gear
	O/D Planetary Ring Gear		Intermediate	Front Planetary
			Shaft
				Ring Gear

AT3282

AT−10

AUTOMATIC TRANSMISSION − Operation

FUNCTION OF COMPONENTS (Cont’d)

The conditions of operation for each gear position are shown in the following illustrations:

D or 2 Range 1st Gear

AT6675

D Range 2nd Gear

AT6676

D or 2 Range 3rd Gear

AT6677

D Range O/D

AT6678

AT−11

AUTOMATIC TRANSMISSION − Operation

FUNCTION OF COMPONENTS (Cont’d)

2 or L Range 2nd Gear

AT6679

L Range 1st Gear

AT6680

R Range Reverse Gear

AT6681

AT−12

AUTOMATIC TRANSMISSION − Operation

HYDRAULIC CONTROL SYSTEM

(A340E, A340F)

The hydraulic control system is composed of the oil pump, the valve body, the solenoid valves, and the clutches and brakes, as well as the fluid passages which connect all of these components. Based on the hydraulic pressure created by the oil pump, the hydraulic control system governs the hydraulic pressure acting on the torque converter, clutches and brakes in accordance with the vehicle driving conditions.

There are three solenoid valves on the valve body. These solenoid valves are turned on and off by signals from the ECU to operate the shift valves. These shift valves then switch the fluid passages so that fluid goes to the torque converter and planetary gear units.

(Except for the solenoid valves, the hydraulic control system of the ECT is basically the same as that of the fully hydraulic controlled automatic transmission.)

HYDRAULIC CONTROL SYSTEM

	VALVE BODY
OIL PUMP	Hydr. pressure control
	Fluid passage switching	CLUTCHES & BRAKES	Planetary gear sets
			Torque Converter
ECU	SOLENOID VALVES

SLINE PRESSURE

Line pressure is the most basic and important pressure used in the automatic transmission, because it is used to operate all of the clutches and brakes in the transmission.

If the primary regulator valve does not operate correctly, line pressure will be either too high or too low. Line pressure that is too high will lead to shifting shock and consequent engine power loss due to the greater effort required of the oil pump; line pressure that is too low will cause slippage of clutches and brakes, which will, in extreme cases, prevent the vehicle from moving. Therefore, if either of these problems are noted, the line pressure should be measured to see if it is within standard.

STHROTTLE PRESSURE

Throttle pressure is always kept in accordance with the opening angle of the engine throttle valve.

This throttle pressure acts on the primary regulator valve and, accordingly, line pressure is regulated in response to the throttle valve opening.

In the fully hydraulic controlled automatic transmission, throttle pressure is used for regulating line pressure and as signal pressure for up−shift and down−shift of the transmission. In the ECT, however, throttle pressure is used only for regulating line pressure. Consequently, improper adjustment of the transmission throttle cable may result in a line pressure that is too high or too low. This, in turn, will lead to shifting shock or clutch and brake slippage.

AT−13

AUTOMATIC TRANSMISSION − Operation

ELECTRONIC CONTROL SYSTEM

(A340E, A340F)

The electronic control system, which controls the shift points and the operation of the lock−up clutch, is composed of the following three parts:

1.Sensors

These sensors sense the vehicle speed, throttle opening and other conditions and send these data to the ECU in the form of electrical signals.

2.ECU

The ECU determines the shift and lock−up timing based upon the signals from sensors, and controls the solenoid valves of the hydraulic control unit accordingly.

3.Actuators

These are three solenoid valves that control hydraulic pressure acting on the hydraulic valves to control shifting and lock−up timing.

SENSORS

DRIVING PATTERN SELECTOR

NEUTRAL START SWITCH

THROTTLE POSITION SENSOR

VEHICLE SPEED

SENSOR

BRAKE LIGHT SWITCH

O/D MAIN SWITCH

CRUISE CONTROL ECU

WATER TEMPERATURE SENSOR

ECU

ACTUATORS

NO. 1

Control of shift SOLENOID VALVE timing

NO. 2

SOLENOID VALVE

Control of lock−	LOCK−UP
up timing	SOLENOID VALVE

	Self−diagnostic	O/D OFF
		INDICATOR LIGHT
	system

Back−up system

AT−14

AUTOMATIC TRANSMISSION − Operation

OPERATING CONDITIONS

(A340H)

1.

Transmission

C0

B0

B1

C1

B3

Rear Planetary Gear Unit

C2

B2

O/D Input

F0

O/D Planetary

Input

Front Planetary

F1

F2

Output Shaft

Shaft

Gear Unit

Shaft

Gear Unit

AT2157

Range (i.e.,

No. 1

No. 2

B3

Shift Lever

Gear

Solenoid

Solenoid

C0

C1

C2

B0

B1

B2

F0

F1

F2

Position)

I.P.

O.P.

Valve

Valve

P

Parking

ON

OFF

F

R

Reverse

ON

OFF

F

F

F

F

F

N

Neutral

ON

OFF

F

1st

ON

OFF

F

F

F

F

D

2nd

ON

ON

F

F

F

F

F

3rd

OFF

ON

F

F

F

F

F

O/D

OFF

OFF

F

F

F

F

1st

ON

OFF

F

F

F

F

2

2nd

ON

ON

F

F

F

F

F

F

3rd

OFF

ON

F

F

F

F

F

L

1st

ON

OFF

F

F

F

F

F

F

* 2nd

ON

ON

F

F

F

F

F

F

* Down−shift only in the L range and 2nd gear − no up−shift.

I.P. ....... Inner Piston

2.

Transfer

O.P. ..... Outer Piston

C

B4

C

Chain

3

4

Transmission Output Shaft

Transfer Planetary Gear Unit

Transfer Rear Output Shaft

ND0045

Transfer gear position

No. 4 solenoid valve

C3

C4

B4

H2

OFF

F

H4

OFF

F

F

L4

ON

F

F

AT−15

AUTOMATIC TRANSMISSION − Operation

FUNCTION OF COMPONENTS

(A340H)

1.Transmission

	Component	Function
C1	Forward Clutch	Connects input shaft and front planetary ring gear.
C2	Direct Clutch	Connects input shaft and front & rear planetary sun gear.
C0	O/D Direct Clutch	Connects overdrive sun gear and overdrive planetary carrier.
B1	2nd Coast Brake	Prevents front & rear planetary sun gear from turning either clockwise or counterclockwise.
B2	2nd Brake	Prevents outer race of F1 from turning either clockwise or counterclockwise thus
		preventing the front & rear planetary sun gear from turning counterclockwise.
B3	1st & Reverse Brake	Prevents rear planetary carrier from turning either clockwise or counterclockwise.
B0	O/D Brake	Prevents overdrive sun gear from turning either clockwise or counterclockwise.
F1	No. 1 One−Way Clutch	When B2 is operating, this clutch prevents the front & rear planetary sun gear from turning
		counterclockwise.
F2	No. 2 One−Way Clutch	Prevents rear planetary carrier from turning counterclockwise.
F0	O/D One−Way Clutch	When the transmission is being driven by the engine, this clutch connects the overdrive sun
		gear and overdrive planetary carrier.
		These gears change the route through which driving force is transmitted in accordance
Planetary Gears		with the operation of each clutch and brake in order to increase or reduce the input and
		output speed.

	O/D Carrier	Front Carrier
	O/D Pinion	Front	Rear Carrier
			Rear Pinion
	O/D Ring Gear	Pinion
	IN		OUT
	Input Shaft		Output Shaft
	O/D Sun Gear	Front Ring Gear	Rear Ring Gear
	O/D Input
	Shaft	Front & Rear Sun Gear

AT5440

AT−16

AUTOMATIC TRANSMISSION − Operation

FUNCTION OF COMPONENTS (Cont’d)

The conditions of operation for each gear position are shown in the following illustrations:

D or 2 Range 1st Gear

2 or L Range 2nd Gear

B2

C0

C1

C0

C1

B1

AT5854	AT5854
D Range 2nd Gear	L Range 1st Gear

	B2		B3
C0	C1	C0	C1

AT5854	AT5854
D or 2 Range 3rd Gear	R Range Reverse Gear

	B2	B3
C0	C1	C0
	C2	C2
	AT5854	AT5854

D Range O/D

		B2
B0

C1

C2

AT5854

AT−17

AUTOMATIC TRANSMISSION − Operation

FUNCTION OF COMPONENTS (Cont’d)

2.Transfer

	Component	Function
C3	Forward Clutch	Connects transmission output shaft and transfer pinion gear.
C4	Direct Clutch	Connects transfer rear output shaft and front drive gear.
B4	O/D Direct Clutch	Prevents transfer ring gear from turning either clockwise or counterclockwise.

	Transfer Rear Output Shaft
IN	OUT
Transmission	Front Drive Gear
Ring Gear

Output Shaft	Chain
	OUT
	Transfer Front
	Output Shaft
	ND0047

The conditions of operation for each gear position are shown in the following illustrations:

H2 Range	H4 Range
C3	C3	C4

ND0047

ND0047

L4 Range

B4

C4

ND0047

AT−18

AUTOMATIC TRANSMISSION − Operation

HYDRAULIC CONTROL SYSTEM

(A340H)

1.Transmission

The hydraulic control system is composed of the oil pump, the valve body, the solenoid valves, and the clutches and brakes, as well as the fluid passages which connect all of these components. Based on the hydraulic pressure created by the oil pump, the hydraulic control system governs the hydraulic pressure acting on the torque converter, clutches and brakes in accordance with the vehicle driving conditions.

There are three solenoid valves on the valve body. These solenoid valves are turned on and off by signals from the Engine & ECT ECU to operate the shift valves. These shift valves then switch the fluid passages so that fluid goes to the torque converter and planetary gear units.

HYDRAULIC CONTROL SYSTEM

	VALVE BODY
OIL PUMP	Hydr. pressure control
	Fluid passage switching	CLUTCHES & BRAKES	Planetary gear sets
			Torque converter
ECU	SOLENOID VALVES

2.Transfer

The hydraulic control system consists of a valve body, No. 4 solenoid valve, a brake (B4) and two clutches (C3, C4) and passages that connect these elements. It hydraulically controls the planetary gear unit either manually, or automatically by the Engine & ECT ECU.

AT−19

AUTOMATIC TRANSMISSION − Operation

ELECTRONIC CONTROL SYSTEM

(A340H)

The electronic control system, which controls the transmission and transfer shift timing and the operation of the lock−up clutch, is composed of the following three parts:

1.Sensors

These sensors sense the vehicle speed, throttle opening and other conditions and send these data to the Engine & ECT ECU in the form of electrical signals.

2.Engine & ECT ECU

The Engine & ECT ECU determines the transmission and transfer shift timing and lock−up timing based upon the signals from sensors, and controls the solenoid valves of the hydraulic control unit accordingly.

3.Actuators

These are four solenoid valves that control hydraulic pressure acting on the hydraulic valves to control shifting and lock−up timing.

SENSORS

DRIVING PATTERN SELECTOR

NEUTRAL START

SWITCH

TRANSFER SHIFT POSITION SWITCH

THROTTLE POSITION SENSOR

VEHICLE SPEED

SENSOR

BRAKE LIGHT SWITCH

O/D MAIN SWITCH

CRUISE CONTROL ECU

WATER TEMPERATURE SENSOR

FLUID TEMPERATURE SENSOR

Engine & ECT ECU

ACTUATORS

NO. 1

SOLENOID VALVE

Control of	NO. 2 SOLENOID
transmission	VALVE
shift timing
Control of	LOCK UP SOLENOID
lock−up timing	VALVE
Control of transfer	NO. 4
shift timing	SOLENOID VALVE
Self−diagnostic
system
Back−up system	O/D OFF INDICATOR
	LIGHT
Fluid temperature	A.T. OIL TEMP.
warning system	WARNING LIGHT

AT−20

AUTOMATIC TRANSMISSION − Preparation

PREPARATION

SST (SPECIAL SERVICE TOOLS)

	Illustration	Part No.	Part Name	Note
		09032−00100	Oil Pan Seal
			Cutter
		09043−38100	Hexagon 10 mm
			Wrench	Transfer (A340F)
		09201−60011	Valve Guide Bushing	Transfer (A340F)
			Remover & Replacer
		09223−15010	Crankshaft Front	Transfer (A340F)
			Oil Seal Replacer
		09223−22010	Crankshaft Front	Transfer (A340F)
			Oil Seal Replacer
		09240−00020	Wire Gauge Set
		09304−12012	Input Shaft Front	Transfer (A340F)
			Bearing Replacer
		09308−00010	Oil Seal Puller
		09313−30021	Detent Ball Plug	Transfer (A340F)
			Socket
			Transmission &
		09316−60010	Transfer Bearing	Transfer (A340F)
			Replacer
		(09316−00010)	Replacer ”A”	Transfer (A340F)
		(09316 − 00070)	Replacer ”F”	Transfer (A340F)
		09320−89010	Transfer Clutch	A340H
			Spring Compressor
		09330−00021	Companion Flange	A340H
			Holding Tool

AT−21

AUTOMATIC TRANSMISSION − Preparation

SST (SPECIAL SERVICE TOOLS) (Cont’d)

	Illustration	Part No.	Part Name	Note
			TOYOTA Automatic
		09350−30020	Transmission Tool
			Set
		(09350−06120)	No. 2 Measure
			Terminal
		(09350−07020)	Oil Pump Puller
		(09350−07030)	No. 1 Piston Spring
			Compressor
		(09350−07040)	No. 2 Piston Spring	A340E
			Compressor
		(09350−07050)	No. 3 Piston Spring
			Compressor
		(09350−07060)	No. 1 Snap Ring
			Expander
		(09350−07070)	No. 2 Snap Ring
			Expander
		(09350−07080)	Brake Reaction Sleeve
			Puller
		(09350−07090)	Brake No. 1 Piston
			Puller
		(09350−07110)	Oil Seal Replacer
		(09351−32140)	Oil Seal Replacer	A340E
			TOYOTA Automatic
		09350−36010	Transmission Tool
			Set
		(09350−06090)	Plate
		09515−30010	Rear Wheel Bearing	Transfer (A340F)
			Replacer

	AT−22		AUTOMATIC TRANSMISSION −		Preparation
SST (SPECIAL SERVICE TOOLS) (Cont’d)
		Illustration	Part No.	Part Name		Note
			09550−10012	Replaces Set ”B”		Transfer (A340F)
			(09252−10010)	No. 1 Replacer Handle		Transfer (A340F)
			(09557−10010)	Differential Drive
				Pinion Front Bearing		Transfer (A340F)
				Replacer
			09550−22011	Rear Axle Bearing
				& Differential Tool		Transfer (A340F)
				Set
			(09550−00020)	Handle		Transfer (A340F)
			(09550−00031)	(Replacer		Transfer (A340F)
			09554−30011	Differential Oil		Transfer (A340F)
				Seal Replacer
			09555−55010	Differential Drive
				Pinion Bearing		Transfer (A340F)
				Replacer
				Front Hub & Drive
			09608−12010	Pinion Bearing		Transfer (A340F)
				Replacer Set
			(09608−00020)	Remover & Replacer		Transfer (A340F)
				Handle
			(09608−00040)	Front Hub Outer		Transfer (A340F)
				Bearing Cup Replacer
			09608−32010	Steering Knuckle Oil		A340H
				Seal Replacer
				Axle Hub &
			09608−35014	Drive Pinion Bearing		A340H
				Tool Set
			(09608−06020)	Handle		A340H
			(09608−06100)	Front Hub Outer		A340H
				Replacer

		AUTOMATIC TRANSMISSION −						Preparation		AT−23
	SST (SPECIAL SERVICE TOOLS) (Cont’d)
	Illustration	Part No.			Part Name				Note
		09921−00010			Spring Tension Tool			Transfer (A340F)
		09950−00020			Bearing Remover			Transfer (A340F)
		09950−20017			Universal Puller			Transfer (A340F)
	SSM (SPECIAL SERVICE MATERIALS)
	Part Name				Part No.		Sec.		Use etc.
									(A340E)
									Oil pan
									(A340H)
	Seal packing 1281,								Transfer case
				08826−00090			AT		Transfer chain front case
	Three bond 1281 or equivalent
									Transfer chain rear case
									Transfer oil pump
									Transfer oil pan
									Transmission oil pan
							TF		Rear companion flange
									(A340H)
	Adhesive 1324,								Transfer oil strainer set bolts
				08833−00070			AT		Transfer chain front case set bolts
	Three bond 1324 or equivalent
									Transfer chain oil receiver set bolts
									Transfer oil pan set bolts
	Adhesive 1344,								Straight screw plug
	Three bond 1344,			08833−00080			TF		Extension housing set bolt
	Loctite 242 or equivalent								Front reatainer set bolt
	Adhesive 1131,								(A340H)
	Three bond 1131,			08833−00090			AT
									Transfer extension housing
	Loctite 518 or equivalent
RECOMMENDED TOOLS
	Illustration	Part No.			Part Name				Note
		09031−00030			Pin Punch

	AT−24	AUTOMATIC TRANSMISSION − Preparation
EQUIPMENT
	Part Name		Note
	Feeler gauge		Check major clearance.
	Vernier caliper with depth gauge		Check length of second coast brake piston rod.
	Dial indicator with magnetic base		Check piston stroke and end play of the output shaft.
	Dial indicator		Check inside diameter of major bushing.
	Straight edge		Check side clearance of oil pump.
	Torque wrench
	Cylinder gauge		Check inside diameter of the transmission case rear bushing.

AUTOMATIC TRANSMISSION (A340E) − Removal of Component Parts	AT−25

REMOVAL OF COMPONENT PARTS (A340E)

COMPONENTS (SUPRA and CRESSIDA)

	Throttle Cable	Solenoid Wire
	Adjusting Bolt
	130 (9, 13)
Control Shaft Lever
	Neutral Start Switch
160 (12, 16)		Union
		300 (22, 29)
70 (61 in.−lb, 6.9)

10 mm 345 (25, 34)	Transmission Housing
12 mm 580 (42, 57)

(SUPRA) Speedometer

Drive Gear

Oil Apply Tube

370 (27, 36)

Extension Housing

Ball

Key

Speedometer

Drive Gear

(w/o ABS)

Sensor Rotor

♦ Gasket

Sensor Rotor

(w/ ABS)

kg−cm (ft−lb, N−m)

: Specified torque

Speedometer Drive Gear (CRESSIDA)

Speed Sensor

(w/o ABS)

Speed Sensor

(w/ ABS)

♦ Non−reusable part

AT8370

AT−26	AUTOMATIC TRANSMISSION (A340E)	− Removal of Component Parts

COMPONENTS (TRUCK and 4 RUNNER)

	Throttle Cable	Solenoid Wire
Adjusting Bolt
130 (9, 13)
Control Shaft Lever	Neutral Start Switch
		Union

160 (12, 16)

70 (61 in.−lb, 6.9)

Grommet

10 mm 345 (25, 34)

12 mm 580 (42, 57)

Transmission Housing

300 (22, 29)

Oil Apply Tube

Sleeve

Ball

Key

Speedometer

Drive Gear

Sensor Rotor

♦ Gasket

Speedometer

Driven Gear

370 (270, 36)

Extension

Housing

Speed Sensor

kg−cm (ft−lb, N−m)

: Specified torque

♦ Non−reusable part	AT4622