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AUTOMATIC TRANSAXLE
GI
SECTION AT MA
EM
LC
EC
CONTENTS
FE
TROUBLE DIAGNOSIS - INDEX ....................................5 Line Pressure Test.....................................................68
Alphabetical & P No. Index for DTC ...........................5 Road Test...................................................................69
PRECAUTIONS ...............................................................7 TROUBLE DIAGNOSIS - GENERAL
Precautions for Supplemental Restraint System DESCRIPTION ...............................................................87
(SRS) AIR BAG and SEAT BELT Symptom Chart..........................................................87 AX
PRE-TENSIONER ......................................................7 TCM Terminals and Reference Value........................98
Precautions for On Board Diagnostic (OBD) TROUBLE DIAGNOSIS FOR POWER SUPPLY........101
SU
System of A/T and Engine...........................................7 Wiring Diagram - AT - MAIN....................................101
Precautions ..................................................................7 Diagnostic Procedure ..............................................102
Service Notice or Precautions .....................................9 DTC U1000 CAN COMMUNICATION LINE ...............104 BR
Wiring Diagrams and Trouble Diagnosis...................10 Description ...............................................................104
PREPARATION .............................................................11 On Board Diagnosis Logic.......................................104
Special Service Tools ................................................11 Possible Cause........................................................104 ST
Commercial Service Tools .........................................14 Diagnostic Trouble Code (DTC) Confirmation
OVERALL SYSTEM ......................................................15 Procedure ................................................................105
A/T Electrical Parts Location .....................................15 Wiring Diagram - AT - CAN .....................................106
RS
Circuit Diagram ..........................................................16 Diagnostic Procedure ..............................................107
Cross-sectional View .................................................17 DTC P0705 PARK/NEUTRAL POSITION SWITCH ...108 BT
Hydraulic Control Circuit............................................18 Description ...............................................................108
Shift Mechanism ........................................................19 On Board Diagnosis Logic.......................................108
Control System ..........................................................28 Possible Cause........................................................109 HA
CAN Communication .................................................29 Diagnostic Trouble Code (DTC) Confirmation
Control Mechanism....................................................30 Procedure ................................................................109
Control Valve .............................................................34 Wiring Diagram - AT - PNP/SW...............................110 SC
ON BOARD DIAGNOSTIC SYSTEM Diagnostic Procedure .............................................. 111
DESCRIPTION ...............................................................36 DTC P0710 A/T FLUID TEMPERATURE SENSOR EL
Introduction ................................................................36 CIRCUIT .......................................................................114
OBD-II Function for A/T System................................36 Description ...............................................................114
One or Two Trip Detection Logic of OBD-II ..............36 On Board Diagnosis Logic.......................................114 IDX
OBD-II Diagnostic Trouble Code (DTC) ....................36 Possible Cause........................................................115
Malfunction Indicator Lamp (MIL)..............................40 Diagnostic Trouble Code (DTC) Confirmation
CONSULT-II ...............................................................40 Procedure ................................................................115
Diagnostic Procedure Without CONSULT-II..............52 Wiring Diagram - AT - FTS ......................................116
TROUBLE DIAGNOSIS - INTRODUCTION..................58 Diagnostic Procedure ..............................................117
Introduction ................................................................58 DTC P0720 VEHICLE SPEED SENSOR.A/T
Work Flow..................................................................62 (REVOLUTION SENSOR) ...........................................120
TROUBLE DIAGNOSIS - BASIC INSPECTION ...........64 Description ...............................................................120
A/T Fluid Check .........................................................64 On Board Diagnosis Logic.......................................120
Stall Test ....................................................................64 Possible Cause........................................................120
CONTENTS (Cont'd)
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................160
Procedure ................................................................121 DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) ....162
Wiring Diagram - AT - VSSA/T ................................122 Description ...............................................................162
Diagnostic Procedure ..............................................123 On Board Diagnosis Logic.......................................162
DTC P0725 ENGINE SPEED SIGNAL .......................125 Possible Cause........................................................163
Description ...............................................................125 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................125 Procedure ................................................................163
Possible Cause........................................................125 Wiring Diagram - AT - TCCSIG ...............................165
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................166
Procedure ................................................................126 DTC P0745 LINE PRESSURE SOLENOID VALVE ...172
Wiring Diagram - AT - ENGSS ................................127 Description ...............................................................172
Diagnostic Procedure ..............................................128 On Board Diagnosis Logic.......................................172
DTC P0731 A/T 1ST GEAR FUNCTION ....................130 Possible Cause........................................................173
Description ...............................................................130 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................130 Procedure ................................................................173
Possible Cause........................................................131 Wiring Diagram - AT - LPSV....................................174
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................175
Procedure ................................................................131 DTC P0750 SHIFT SOLENOID VALVE A ..................178
Wiring Diagram - AT - 1ST ......................................133 Description ...............................................................178
Diagnostic Procedure ..............................................134 On Board Diagnosis Logic.......................................178
DTC P0732 A/T 2ND GEAR FUNCTION....................136 Possible Cause........................................................178
Description ...............................................................136 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................136 Procedure ................................................................179
Possible Cause........................................................137 Wiring Diagram - AT - SSV/A ..................................180
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................181
Procedure ................................................................137 DTC P0755 SHIFT SOLENOID VALVE B ..................183
Wiring Diagram - AT - 2ND......................................139 Description ...............................................................183
Diagnostic Procedure ..............................................140 On Board Diagnosis Logic.......................................183
DTC P0733 A/T 3RD GEAR FUNCTION....................142 Possible Cause........................................................183
Description ...............................................................142 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................142 Procedure ................................................................184
Possible Cause........................................................143 Wiring Diagram - AT - SSV/B ..................................185
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................186
Procedure ................................................................143 DTC P1705 ACCELERATOR PEDAL POSITION
Wiring Diagram - AT - 3RD......................................145 SENSOR (THROTTLE POSITION SENSOR).............188
Diagnostic Procedure ..............................................146 Description ...............................................................188
DTC P0734 A/T 4TH GEAR FUNCTION ....................148 On Board Diagnosis Logic.......................................189
Description ...............................................................148 Possible Cause........................................................189
On Board Diagnosis Logic.......................................149 Diagnostic Trouble Code (DTC) Confirmation
Possible Cause........................................................149 Procedure ................................................................190
Diagnostic Trouble Code (DTC) Confirmation Wiring Diagram - AT - TPS......................................191
Procedure ................................................................150 Diagnostic Procedure ..............................................192
Wiring Diagram - AT - 4TH ......................................152 DTC P1760 OVERRUN CLUTCH SOLENOID
Diagnostic Procedure ..............................................153 VALVE..........................................................................194
DTC P0740 TORQUE CONVERTER CLUTCH Description ...............................................................194
SOLENOID VALVE......................................................157 On Board Diagnosis Logic.......................................194
Description ...............................................................157 Possible Cause........................................................194
On Board Diagnosis Logic.......................................157 Diagnostic Trouble Code (DTC) Confirmation
Possible Cause........................................................157 Procedure ................................................................195
Diagnostic Trouble Code (DTC) Confirmation Wiring Diagram - AT - OVRCSV..............................196
Procedure ................................................................158 Diagnostic Procedure ..............................................197
Wiring Diagram - AT - TCV......................................159
AT-2
CONTENTS (Cont'd)
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP A/T Does Not Shift: D1 -> D2 or Does Not
SENSOR CIRCUIT AND TCM POWER SOURCE) ....199 Kickdown: D4 -> D2..................................................240
Description ...............................................................199 A/T Does Not Shift: D2 -> D3...................................243 GI
On Board Diagnosis Logic.......................................200 A/T Does Not Shift: D3 -> D4...................................246
Possible Cause........................................................200 A/T Does Not Perform Lock-up ...............................249 MA
Diagnostic Trouble Code (DTC) Confirmation A/T Does Not Hold Lock-up Condition ....................251
Procedure ................................................................200 Lock-up Is Not Released .........................................253
Wiring Diagram - AT - BA/FTS ................................201 Engine Speed Does Not Return To Idle (Light EM
Diagnostic Procedure ..............................................202 Braking D4 -> D3).....................................................254
DTC VEHICLE SPEED SENSOR.MTR .......................206 Vehicle Does Not Start From D1 .............................257
Description ...............................................................206 A/T Does Not Shift: D4 -> D3, When 3rd Position LC
On Board Diagnosis Logic.......................................206 Switch ON -> OFF...................................................258
Possible Cause........................................................206 A/T Does Not Shift: D3 -> 22, When Selector
EC
Diagnostic Trouble Code (DTC) Confirmation Lever D -> 2nd Position ..........................................259
Procedure ................................................................207 A/T Does Not Shift: 22 -> 11, When Selector
Wiring Diagram - AT - VSSMTR..............................208 Lever 2nd -> 1st Position ........................................260 FE
Diagnostic Procedure ..............................................209 Vehicle Does Not Decelerate By Engine Brake ......263
DTC POWER TRAIN REVOLUTION SENSOR ..........211 TCM Self-diagnosis Does Not Activate ...................265
Description ...............................................................211 A/T SHIFT LOCK SYSTEM.........................................275
On Board Diagnosis Logic.......................................211 Description ...............................................................275
Diagnostic Trouble Code (DTC) Confirmation Shift Lock System Electrical Parts Location............275
Procedure ................................................................212 Wiring Diagram - SHIFT -........................................276
AX
Wiring Diagram - AT - P/T SEN-01 .........................213 Shift Lock Control Unit Reference Values...............277
Diagnostic Procedure ..............................................214 Component Inspection.............................................278 SU
Component Inspection.............................................215 SHIFT CONTROL SYSTEM ........................................281
DTC CONTROL UNIT (RAM), CONTROL UNIT Control Cable...........................................................281
(ROM)...........................................................................216 ON-VEHICLE SERVICE ..............................................282 BR
Description ...............................................................216 Control Valve Assembly and Accumulators.............282
On Board Diagnosis Logic.......................................216 Revolution Sensor Replacement .............................283
Possible Cause........................................................216 Park/Neutral Position (PNP) Switch Adjustment .....283 ST
Diagnostic Trouble Code (DTC) Confirmation Control Cable Adjustment........................................284
Procedure ................................................................216 Differential Side Oil Seal Replacement ...................284
RS
Diagnostic Procedure ..............................................217 REMOVAL AND INSTALLATION ...............................285
DTC CONTROL UNIT (EEP ROM) .............................218 Removal...................................................................285
Description ...............................................................218 Installation................................................................286 BT
On Board Diagnosis Logic.......................................218 OVERHAUL .................................................................288
Possible Cause........................................................218 Components.............................................................288
Diagnostic Trouble Code (DTC) Confirmation Oil Channel ..............................................................291 HA
Procedure ................................................................218 Locations of Adjusting Shims, Needle Bearings,
Diagnostic Procedure ..............................................219 Thrust Washers and Snap Rings ............................292
TROUBLE DIAGNOSES FOR SYMPTOMS ...............220 DISASSEMBLY............................................................293
SC
Wiring Diagram - AT - NONDTC .............................220 REPAIR FOR COMPONENT PARTS .........................307
A/T CHECK Indicator Lamp Does Not Come On ...222 Manual Shaft............................................................307 EL
Engine Cannot Be Started In P and N Position......224 Oil Pump ..................................................................310
In P Position, Vehicle Moves Forward or Control Valve Assembly...........................................314
Backward When Pushed .........................................226 Control Valve Upper Body .......................................322 IDX
In N Position, Vehicle Moves...................................227 Control Valve Lower Body .......................................326
Large Shock. N -> R Position .................................229 Reverse Clutch ........................................................328
Vehicle Does Not Creep Backward In R Position ...231 High Clutch ..............................................................331
Vehicle Does Not Creep Forward in D, 2nd or Forward and Overrun Clutches ...............................336
1st Position ..............................................................234 Low & Reverse Brake..............................................341
Vehicle Cannot Be Started From D1 .......................237
AT-3
CONTENTS (Cont'd)
Rear Internal Gear, Forward Clutch Hub and Accumulator .............................................................382
Overrun Clutch Hub.................................................344 Clutch and Brakes ...................................................383
Output Shaft, Idler Gear, Reduction Pinion Gear Final Drive................................................................385
and Bearing Retainer...............................................348 Planetary Carrier and Oil Pump ..............................386
Band Servo Piston Assembly ..................................353 Input Shaft ...............................................................387
Final Drive................................................................358 Reduction Pinion Gear ............................................387
ASSEMBLY..................................................................362 Band Servo ..............................................................388
Assembly (1)............................................................362 Output Shaft.............................................................388
Adjustment (1) .........................................................362 Bearing Retainer......................................................389
Assembly (2)............................................................367 Total End Play..........................................................389
Adjustment (2) .........................................................373 Reverse Clutch End Play ........................................389
Assembly (3)............................................................375 Removal and Installation .........................................390
SERVICE DATA AND SPECIFICATIONS (SDS) .......381 Shift Solenoid Valves...............................................390
General Specifications.............................................381 Solenoid Valves .......................................................390
Shift Schedule..........................................................381 A/T Fluid Temperature Sensor.................................390
Stall Revolution........................................................381 Revolution Sensor (For Speed Sensor) ..................390
Line Pressure...........................................................382 Dropping Resistor ....................................................390
Control Valves..........................................................382 Power Train Revolution Sensor...............................390
AT-4
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC
Alphabetical & P No. Index for DTC NHAT0001
ALPHABETICAL INDEX FOR DTC NHAT0001S01
DTC
Items GI
CONSULT-II Reference page
(CONSULT-II screen terms)
GST*1
A/T 1ST GR FNCTN P0731 AT-130
MA
A/T 2ND GR FNCTN P0732 AT-136
EM
A/T 3RD GR FNCTN P0733 AT-142
A/T 4TH GR FNCTN P0734 AT-148
LC
A/T TCC S/V FNCTN P0744 AT-162
ATF TEMP SEN/CIRC P0710 AT-114
EC
CAN COMM CIRCUIT U1000 AT-104
ENGINE SPEED SIG P0725 AT-125
FE
L/PRESS SOL/CIRC P0745 AT-172
O/R CLTCH SOL/CIRC P1760 AT-194
PNP SW/CIRC P0705 AT-108
SFT SOL A/CIRC*2 P0750 AT-178 AX
SFT SOL B/CIRC*2 P0755 AT-183
TCC SOLENOID/CIRC P0740 AT-157 SU
TP SEN/CIRC A/T*2 P1705 AT-188
VEH SPD SEN/CIR AT*3 P0720 AT-120 BR
*1: These numbers are prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates. ST
*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.
RS
BT
HA
SC
EL
IDX
AT-5
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC (Cont'd)
P NO. INDEX FOR DTC =NHAT0001S02
DTC
Items
CONSULT-II Reference page
(CONSULT-II screen terms)
GST*1
P0705 PNP SW/CIRC AT-108
P0710 ATF TEMP SEN/CIRC AT-114
P0720 VEH SPD SEN/CIR AT*3 AT-120
P0725 ENGINE SPEED SIG AT-125
P0731 A/T 1ST GR FNCTN AT-130
P0732 A/T 2ND GR FNCTN AT-136
P0733 A/T 3RD GR FNCTN AT-142
P0734 A/T 4TH GR FNCTN AT-148
P0740 TCC SOLENOID/CIRC AT-157
P0744 A/T TCC S/V FNCTN AT-162
P0745 L/PRESS SOL/CIRC AT-172
P0750 SFT SOL A/CIRC*2 AT-178
P0755 SFT SOL B/CIRC*2 AT-183
P1705 TP SEN/CIRC A/T*2 AT-188
P1760 O/R CLTCH SOL/CIRC AT-194
U1000 CAN COMM CIRCUIT AT-104
*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-6
PRECAUTIONS
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Precautions for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" NHAT0002
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with GI
a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types
of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS sys-
tem uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air MA
bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information that is necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
EM
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