at.pdf

AUTOMATIC TRANSAXLE

SECTION AT

CONTENTS

EURO-OBD

TROUBLE DIAGNOSIS - INDEX ....................................5

Alphabetical & P No. Index for DTC ...........................5

ON BOARD DIAGNOSTIC SYSTEM ............................50

Introduction ................................................................50

EURO-OBD Function for A/T System .......................50

One or Two Trip Detection Logic of EURO-OBD ......50

EURO-OBD Diagnostic Trouble Code (DTC). ...........50

Malfunction Indicator (MI) ..........................................54

CONSULT-II ...............................................................54

Diagnostic Procedure Without CONSULT-II ..............63

...............7

Precautions for On Board Diagnostic (EURO-

OBD) System of A/T and Engine - Euro-OBD - ..........7

Precautions ..................................................................7

Service Notice or Precautions .....................................9

Wiring Diagrams and Trouble Diagnosis ...................10

PREPARATION ............................................................. 11

Special Service Tools ................................................ 11

Commercial Service Tools .........................................13

A/T FLUID ......................................................................15

Checking A/T Fluid ....................................................15

Changing A/T Fluid ....................................................15

OVERALL SYSTEM ......................................................16

A/T Electrical Parts Location .....................................16

Circuit Diagram ..........................................................17

Cross-sectional View - 3AX00, 3AX01, 3AX19,

3AX63 and 3AX64 models ........................................19

Cross-sectional View - 3AX10 and 3AX18

models .......................................................................20

Hydraulic Control Circuit ............................................21

Shift Mechanism ........................................................22

Control System ..........................................................31

Control Mechanism ....................................................32

Control Valve .............................................................37

and

SEAT BELT PRE-TENSIONER

EXCEPT FOR EURO-OBD

TROUBLE DIAGNOSIS - . ..............................................69

Introduction ................................................................69

Work Flow ..................................................................73

EURO-OBD

TROUBLE DIAGNOSIS - INTRODUCTION ..................74

Introduction ................................................................74

Work Flow ..................................................................78

TROUBLE DIAGNOSIS - BASIC INSPECTION ...........80

A/T Fluid Check .........................................................80

Stall Test ....................................................................80

Line Pressure Test .....................................................84

Road Test. ..................................................................85

TROUBLE DIAGNOSIS - GENERAL

DESCRIPTION .............................................................105

Symptom Chart ........................................................105

TCM Terminals and Reference Value ...................... 118

TROUBLE DIAGNOSIS FOR POWER SUPPLY ........123

Wiring Diagram - AT - MAIN ....................................123

Diagnostic Procedure ..............................................124

EXCEPT FOR EURO-OBD

ON BOARD DIAGNOSTIC ............................................39

CONSULT-II ...............................................................39

Diagnostic Procedure Without CONSULT-II ..............44

EXCEPT FOR EURO-OBD

VEHICLE SPEED SENSOR.A/T ..................................126

PRECAUTIONS ...............................................................7

Supplemental Restraint System (SRS) ² AIR

BAG

CONTENTS (Cont’d)

Description ...............................................................126

Wiring Diagram - AT - VSSA/T ................................128

Diagnostic Procedure ..............................................129

VHCL SPEED SEN.MTR VEHICLE ............................131

Description ...............................................................131

Wiring Diagram - AT - VSSMTR ..............................132

Diagnostic Procedure ..............................................133

THROTTLE POSITION ................................................134

Description ...............................................................134

Wiring Diagram - AT - TPS ......................................136

Diagnostic Procedure ..............................................137

Component Inspection .............................................141

SHIFT SOLENOID VALVE A ......................................142

Description ...............................................................142

Wiring Diagram - AT - SSV/A ..................................144

Diagnostic Procedure ..............................................145

Component Inspection .............................................147

SHIFT SOLENOID VALVE B ......................................148

Description ...............................................................148

Wiring Diagram - AT - SSV/B ..................................150

Diagnostic Procedure ..............................................151

Component Inspection .............................................153

OVERRUN CLUTCH SOLENOID ................................154

Description ...............................................................154

Wiring Diagram - AT - OVRCSV. .............................155

Diagnostic Procedure ..............................................156

Component Inspection .............................................158

TORQUE CONVERTER CLUTCH ...............................159

Description ...............................................................159

Wiring Diagram - AT - TCV ......................................161

Diagnostic Procedure ..............................................162

Component Inspection .............................................164

BATT/FLUID TEMP SEN (A/T FLUID TEMP

SENSOR CIRCUIT AND TCM POWER SOURCE) ....165

Description ...............................................................165

Wiring Diagram - AT - BA/FTS ................................167

Diagnostic Procedure ..............................................168

Component Inspection .............................................171

ENGINE SPEED SIGNAL . ...........................................172

Description ...............................................................172

Wiring Diagram - AT - ENGSS ................................173

Diagnostic Procedure ..............................................174

LINE PRESSURE SOLENOID ....................................176

Description ...............................................................176

Wiring Diagram - AT - LPSV. ...................................178

Diagnostic Procedure ..............................................179

Component Inspection .............................................182

Wiring Diagram - AT - PNP/SW ...............................185

Diagnostic Procedure ..............................................186

Component Inspection .............................................188

DTC P0710 A/T FLUID TEMPERATURE SENSOR

CIRCUIT .......................................................................189

Description ...............................................................189

Wiring Diagram - AT - FTS ......................................191

Diagnostic Procedure ..............................................192

Component Inspection .............................................194

DTC P0720 VEHICLE SPEED SENSOR.A/T ..............195

Description ...............................................................195

Wiring Diagram - AT - VSSA/T ................................197

Diagnostic Procedure ..............................................198

DTC P0725 ENGINE SPEED SIGNAL .......................200

Description ...............................................................200

Wiring Diagram - AT - ENGSS ................................201

Diagnostic Procedure ..............................................202

DTC P0731 A/T 1ST GEAR FUNCTION ....................204

Description ...............................................................204

Wiring Diagram - AT - 1ST ......................................207

Diagnostic Procedure ..............................................208

Component Inspection .............................................209

DTC P0732 A/T 2ND GEAR FUNCTION .................... 211

Description ............................................................... 211

Wiring Diagram - AT - 2ND ......................................214

Diagnostic Procedure ..............................................215

Component Inspection .............................................216

DTC P0733 A/T 3RD GEAR FUNCTION ....................217

Description ...............................................................217

Wiring Diagram - AT - 3RD ......................................220

Diagnostic Procedure ..............................................221

Component Inspection .............................................222

DTC P0734 A/T 4TH GEAR FUNCTION ....................223

Description ...............................................................223

Wiring Diagram - AT - 4TH ......................................227

Diagnostic Procedure ..............................................228

Component Inspection .............................................232

DTC P0740 TORQUE CONVERTER CLUTCH

SOLENOID VALVE ......................................................233

Description ...............................................................233

Wiring Diagram - AT - TCV ......................................235

Diagnostic Procedure ..............................................236

Component Inspection .............................................238

DTC P0745 LINE PRESSURE SOLENOID VALVE ...239

Description ...............................................................239

Wiring Diagram - AT - LPSV ....................................241

Diagnostic Procedure ..............................................242

Component Inspection .............................................245

DTC P0750 SHIFT SOLENOID VALVE A ..................246

Description ...............................................................246

Wiring Diagram - AT - SSV/A ..................................248

Diagnostic Procedure ..............................................249

EURO-OBD

DTC P0705 PARK/NEUTRAL POSITION (PNP)

SWITCH .......................................................................183

Description ...............................................................183

AT-2

CONTENTS (Cont’d)

Component Inspection .............................................251

DTC P0755 SHIFT SOLENOID VALVE B ..................252

Description ...............................................................252

Wiring Diagram - AT - SSV/B ..................................254

Diagnostic Procedure ..............................................255

Component Inspection .............................................257

DTC P1705 THROTTLE POSITION SENSOR ...........258

Description ...............................................................258

Wiring Diagram - AT - TPS ......................................261

Diagnostic Procedure ..............................................263

Component Inspection .............................................267

DTC P1760 OVERRUN CLUTCH SOLENOID

VALVE ..........................................................................268

Description ...............................................................268

Wiring Diagram - AT - OVRCSV. .............................270

Diagnostic Procedure ..............................................271

Component Inspection .............................................273

DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP

SENSOR CIRCUIT AND TCM POWER SOURCE) ....274

Description ...............................................................274

Wiring Diagram - AT - BA/FTS ................................276

Diagnostic Procedure ..............................................277

Component Inspection .............................................280

DTC VHCL SPEED SEN.MTR VEHICLE SPEED

SENSOR.MTR ..............................................................281

Description ...............................................................281

Wiring Diagram - AT - VSSMTR ..............................283

Diagnostic Procedure ..............................................285

8. Vehicle Cannot Be Started From D 1 ................... 311

9. A/T Does Not Shift: D 1 -> D 2 Or Does Not

Kickdown: D 4 -> D 2 ..................................................314

10. A/T Does Not Shift: D 2 -> D 3 .............................317

11. A/T Does Not Shift: D 3 -> D 4 .............................320

12. A/T Does Not Perform Lock-up .........................323

13. A/T Does Not Hold Lock-up Condition ..............325

14. Lock-up Is Not Released ...................................327

15. Engine Speed Does Not Return To Idle (Light

Braking D 4 -> D 3 ) .....................................................328

16. Vehicle Does Not Start From D 1 .......................330

17. A/T Does Not Shift: D 4 -> D 3 , When

Overdrive Control Switch

OFF

Position .........................................332

19. A/T Does Not Shift: 2 2 -> 1 1 , When Selector

Lever

Position .........................................333

20. Vehicle Does Not Decelerate By Engine

Brake ........................................................................334

21. TCM Self-diagnosis Does Not Activate (PNP,

Overdrive Control and Throttle Position Switches

Circuit Checks) ........................................................334

A/T SHIFT LOCK SYSTEM .........................................343

Description ...............................................................343

Shift Lock System Electrical Parts Location ............343

Wiring Diagram - SHIFT - ........................................344

Diagnostic Procedure ..............................................345

KEY INTERLOCK CABLE ..........................................349

Components .............................................................349

Removal ...................................................................349

Installation ................................................................350

ON-VEHICLE SERVICE ..............................................351

Control Valve Assembly and Accumulators .............351

Control Cable Adjustment ........................................352

Park/Neutral Position (PNP) Switch Adjustment .....352

Differential Side Oil Seal Replacement ...................353

Revolution Sensor Replacement .............................353

REMOVAL AND INSTALLATION ...............................354

Removal ...................................................................354

Installation ................................................................355

OVERHAUL .................................................................357

Components-1 3AX00, 3AX01, 3AX19, 3AX63

and 3AX64 models ..................................................357

Components-1 3AX10 and 3AX18 models .............358

Components-2 3AX00, 3AX01, 3AX19, 3AX63

and 3AX64 models ..................................................359

Components-2 3AX10 and 3AX18 models .............360

Components-3 3AX00, 3AX01, 3AX19, 3AX63

and 3AX64 models ..................................................361

Components-3 3AX10 and 3AX18 models .............362

Oil Channel ..............................................................363

DTC CONTROL UNIT (RAM), CONTROL UNIT

(ROM) ...........................................................................286

Description ...............................................................286

Diagnostic Procedure ..............................................286

DTC CONTROL UNIT (EEP ROM) .............................288

Description ...............................................................288

Diagnostic Procedure ..............................................289

TROUBLE DIAGNOSES FOR SYMPTOMS ...............290

Wiring Diagram - AT - NONDTC/General and

Except for Euro-OBD ...............................................290

Wiring Diagram - AT - NONDTC/EURO-OBD .........292

1. O/D OFF Indicator Lamp Does Not Come On ....296

2. Engine Cannot Be Started In

and

Position .......................303

6. Vehicle Does Not Creep Backward In ² R ²

Position ....................................................................305

7. Vehicle Does Not Creep Forward In ² D ² , ² 2 ²

Position .........................................................308

AT-3

...............331

18. A/T Does Not Shift: D 3 -> 2 2 , When Selector

Lever

Position ....................................................................299

3. In ² P ² Position, Vehicle Moves Forward Or

Backward When Pushed .........................................300

4. In ² N ² Position, Vehicle Moves ...........................301

5. Large Shock.

CONTENTS (Cont’d)

Locations of Adjusting Shims, Needle Bearings,

Thrust Washers and Snap Rings - 3AX00, 01,

19, 63 and 64 models ..............................................364

Locations of Adjusting Shims, Needle Bearings,

Thrust Washers and Snap Rings - 3AX10 and

3AX18 models .........................................................365

DISASSEMBLY . ...........................................................366

REPAIR FOR COMPONENT PARTS .........................381

Manual Shaft. ...........................................................381

Oil Pump ..................................................................384

Control Valve Assembly ...........................................388

Control Valve Upper Body .......................................397

Control Valve Lower Body .......................................401

Reverse Clutch ........................................................403

High Clutch ..............................................................407

Forward Clutch and Overrun Clutch ........................412

Low & Reverse Brake ..............................................419

Rear Internal Gear, Forward Clutch Hub and

Overrun Clutch Hub .................................................423

O/Shaft, O/Gear, I/Gear, R/Pinion Gear and B/

Retainer - 3AX00, 01, 19, 63 and 64 models .........427

Output Shaft, Idler Gear, Reduction Pinion Gear

and Bearing Retainer - 3AX10 and 3AX18

models .....................................................................432

Band Servo Piston Assembly ..................................437

Final Drive ................................................................442

ASSEMBLY . .................................................................446

Assembly (1) ............................................................446

Adjustment (1) .........................................................447

Assembly (2) ............................................................455

Adjustment (2) .........................................................459

Assembly (3) ............................................................462

Assembly (4) ............................................................465

SERVICE DATA AND SPECIFICATIONS (SDS) .......470

General Specifications .............................................470

Shift Schedule ..........................................................470

Stall Revolution ........................................................473

Line Pressure. ..........................................................473

Control Valves ..........................................................474

Clutch and Brakes ...................................................474

Clutch and Brake Return Springs ............................477

Oil Pump ..................................................................477

Input Shaft ...............................................................478

Planetary Carrier. .....................................................478

Final Drive ................................................................478

Reduction Pinion Gear ............................................480

Output Shaft - 3AX00, 3AX01, 3AX19, 3AX63

and 3AX64 models ..................................................481

Output Shaft - 3AX10 and 3AX18 models ..............483

Bearing Retainer ......................................................484

Total End Play ..........................................................484

Reverse Clutch End Play ........................................484

Accumulator .............................................................484

Band Servo ..............................................................485

Removal and Installation .........................................485

Shift Solenoid Valves ...............................................485

Resistance ...............................................................485

ATF Temp. Sensor ...................................................485

Revolution Sensor ...................................................485

Dropping Resistor ....................................................485

AT-4

TROUBLE DIAGNOSIS — INDEX

EURO-OBD

Alphabetical & P No. Index for DTC

Alphabetical & P No. Index for DTC NJAT0243

ALPHABETICAL INDEX FOR DTC NJAT0243S01

Check if the vehicle is a model with Euro-OBD system or not by the

“Type approval number” on the identification plate. Refer to GI-40,

“IDENTIFICATION PLATE”.

Type approval number

Model

Available

With Euro-OBD system

Not available (blank)

Without Euro-OBD system

DTC

Items

(CONSULT-II screen terms)

CONSULT-II

GST*1

Reference page

A/T 1ST GR FNCTN

P0731

AT-204

A/T 2ND GR FNCTN

P0732

AT-211

A/T 3RD GR FNCTN

P0733

AT-217

A/T 4TH GR FNCTN

P0734

AT-223

ATF TEMP SEN/CIRC

P0710

AT-189

ENGINE SPEED SIG

P0725

AT-200

L/PRESS SOL/CIRC

P0745

AT-239

O/R CLTCH SOL/CIRC

P1760

AT-268

PNP SW/CIRC

P0705

AT-183

SFT SOL A/CIRC*2

P0750

AT-246

SFT SOL B/CIRC*2

P0755

AT-252

TCC SOLENOID/CIRC

P0740

AT-233

TP SEN/CIRC A/T*2

P1705

AT-258

VEH SPD SEN/CIR AT*3

P0720

AT-195

*1: These numbers are prescribed by SAE J2012.

*2: When the fail-safe operation occurs, the MIL illuminates.

*3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at

the same time.

AT-5

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