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AUTOMATIC TRANSAXLE
C TRANSMISSION/TRANSAXLE
A
B
SECTION
AUTOMATIC TRANSAXLE AT
D
E
CONTENTS
PRECAUTIONS ......................................................... 5. TROUBLE DIAGNOSIS -- INTRODUCTION .......... 54 . F
Precautions for Supplemental Restraint System Introduction ............................................................ 54
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Work Flow .............................................................. 58
.
SIONER" ................................................................. 5
. TROUBLE DIAGNOSIS -- BASIC INSPECTION ... 61 G
Precautions for On Board Diagnostic (EURO-OBD) A/T Fluid Check ..................................................... 61 .
System of A/T and Engine -- Euro-OBD -- ............ 5 . Stall Test ................................................................ 62
.
Precautions for Trouble Diagnosis .......................... 5 . Fluid Pressure Test ................................................ 65 .
H
Precautions for Harness Repair .............................. 5 . Road Test .............................................................. 66
.
Precautions ............................................................. 6
. TROUBLE DIAGNOSIS -- GENERAL DESCRIP-
Service Notice or Precautions ................................. 7 . TION ....................................................................... .. 83
.
Wiring Diagrams and Trouble Diagnosis ................. 8 . Symptom Chart .................................................... .. 83 . I
PREPARATION .......................................................... 9
. TCM Terminals and Reference Value .................. 103 .
Special Service Tools .............................................. 9. CAN COMMUNICATION ........................................ 106 .
Commercial Service Tools ......................................11 . System Description .............................................. 106 . J
A/T FLUID ................................................................ 12
. CANCommunicationUnitForLHDModelswithTyre
Checking A/T Fluid ................................................ 12. Pressure Monitoring System ............................... 106 .
Changing A/T Fluid ............................................... 12 . CAN Communication Unit For LHD Models without
K
OVERALL SYSTEM ................................................ 13 . Tyre Pressure Monitoring System ....................... 107 .
A/T Electrical Parts Location ................................. 13 . CAN Communication Unit For RHD Models with
Circuit Diagram ..................................................... 14
. Tyre Pressure Monitoring System ....................... 108 .
Cross-Sectional View ............................................ 15 . CAN Communication Unit For RHD Models without L
Hydraulic Control Circuit ....................................... 16 . Tyre Pressure Monitoring System ....................... 109 .
Shift Mechanism .................................................... 17
. DTC P0705 PARK/NEUTRAL POSITION (PNP)
Control System ...................................................... 26
. SWITCH ................................................................. 110
. M
Control Mechanism ............................................... 27 . Description ........................................................... 110
.
Control Valve ......................................................... 31
. Wiring Diagram -- AT -- PNP/SW ...................... 112 .
Diagnostic Procedure .......................................... 113 .
EURO-OBD Component Inspection ......................................... 115 .
DTC P0710 A/T FLUID TEMPERATURE SENSOR
TROUBLE DIAGNOSIS -- INDEX .......................... 33 . CIRCUIT ................................................................. 116
.
Alphabetical & P No. Index for DTC ...................... 33 . Description ........................................................... 116
.
ON BOARD DIAGNOSTIC SYSTEM DESCRIP- Wiring Diagram -- AT -- FTS ............................. 118 .
TION ......................................................................... 35
. Diagnostic Procedure .......................................... 119 .
Introduction ........................................................... 35
. Component Inspection ......................................... 121 .
EURO-OBD Function for A/T System ................... 35 . DTC P0720 VEHICLE SPEED SENSOR A/T (REV-
One or Two Trip Detection Logic of EURO-OBD ... 35 OLUTION SENSOR) .............................................. 122 .
EURO-OBD Diagnostic Trouble Code (DTC) ........ 35 . Description ........................................................... 122
.
Malfunction Indicator (MI) ...................................... 39 . Wiring Diagram -- AT -- VSSA/T ....................... 124 .
CONSULT-II .......................................................... 39 . Diagnostic Procedure .......................................... 125 .
Diagnostic Procedure Without CONSULT-II .......... 48 .
AT-1
DTC P0725 ENGINE SPEED SIGNAL .................. 127 . On Board Diagnosis Logic ................................... 190 .
Description ........................................................... 127
. DTC Confirmation Procedure ............................... 190 .
Wiring Diagram -- AT -- ENGSS ........................ 128 . Wiring Diagram -- AT .......................................... 191 .
Diagnostic Procedure .......................................... 129 . Diagnostic Procedure ........................................... 192 .
DTC P0731 A/T 1ST GEAR FUNCTION ................ 131 . DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
Description ........................................................... 131
. SENSOR CIRCUIT AND TCM POWER SOURCE).193
Wiring Diagram -- AT -- 1ST .............................. 134 . Description ........................................................... 193
.
Diagnostic Procedure .......................................... 135 . Wiring Diagram -- AT -- BA/FTS ........................ 195 .
Component Inspection ......................................... 136 . Diagnostic Procedure ........................................... 196 .
DTC P0732 A/T 2ND GEAR FUNCTION ............... 138 . Component Inspection ......................................... 198 .
Description ........................................................... 138
. DTC VEHICLE SPEED SENSOR MTR .................. 199 .
Wiring Diagram -- AT -- 2ND ............................. 141 . Description ........................................................... 199
.
Diagnostic Procedure .......................................... 142 . Wiring Diagram -- AT -- VSSMTR ...................... 201 .
Component Inspection ......................................... 143 . Diagnostic Procedure ........................................... 202 .
DTC P0733 A/T 3RD GEAR FUNCTION ............... 144 . DTC CONTROL UNIT (RAM), CONTROL UNIT
Description ........................................................... 144
. (ROM) ..................................................................... 203
.
Wiring Diagram -- AT -- 3RD ............................. 147 . Description ........................................................... 203
.
Diagnostic Procedure .......................................... 148 . Diagnostic Procedure ........................................... 204 .
Component Inspection ......................................... 149 . DTC CONTROL UNIT(EEPROM) .......................... 205 .
DTC P0734 A/T 4TH GEAR FUNCTION ............... 150 . Description ........................................................... 205
.
Description ........................................................... 150
. Diagnostic Procedure ........................................... 206 .
Wiring Diagram -- AT -- 4TH .............................. 153 . TROUBLE DIAGNOSES FOR SYMPTOMS .......... 207 .
Diagnostic Procedure .......................................... 154 . Wiring Diagram -- AT -- NONDTC ..................... 207 .
Component Inspection ......................................... 157 . 1. O/D OFF Indicator Lamp Does Not Come On . 209
DTC P0740 TORQUE CONVERTER CLUTCH 2. Engine Cannot Be Started In "P" and "N" Position.210
SOLENOID VALVE ................................................ 158 . 3. In "P" Position, Vehicle Moves Forward Or Back-
Description ........................................................... 158
. ward When Pushed .............................................. 211 .
Wiring Diagram -- AT -- TCV ............................. 160 . 4. In "N" Position, Vehicle Moves ......................... 211 .
Diagnostic Procedure .......................................... 161 . 5. Large Shock. "N" "R" Position ..................... 212 .
Component Inspection ......................................... 162 . 6. Vehicle Does Not Creep Backward In "R" Position .213
DTC P0745 LINE PRESSURE SOLENOID VALVE. 163 7. Vehicle Does Not Creep Forward In "D", "2" Or
Description ........................................................... 163
. "1" Position ........................................................... 216
.
Wiring Diagram -- AT -- LPSV ........................... 165 . 8. Vehicle Cannot Be Started From D1 ................ 218 .
Diagnostic Procedure .......................................... 166 . 9. A/T Does Not Shift: D1 D2 Or Does Not Kick-
Component Inspection ......................................... 167 . down: D4 D2 .................................................... 221 .
DTC P0750 SHIFT SOLENOID VALVE A .............. 170 . 10. A/T Does Not Shift: D2 D3 ......................... 223 .
Description ........................................................... 170
. 11. A/T Does Not Shift: D3 D 4 .......................... 225 .
Wiring Diagram -- AT -- SSV/A .......................... 172 . 12. A/T Does Not Perform Lock-up ...................... 228 .
Diagnostic Procedure .......................................... 173 . 13. A/T Does Not Hold Lock-up Condition ........... 229 .
Component Inspection ......................................... 174 . 14. Lock-up Is Not Released ................................ 231 .
DTC P0755 SHIFT SOLENOID VALVE B .............. 175 . 15. Engine Speed Does Not Return To Idle (Light
Description ........................................................... 175
. Braking D4 D3 ) ................................................ 231 .
Wiring Diagram -- AT -- SSV/B .......................... 177 . 16. Vehicle Does Not Start From D 1 .................... 233 .
Diagnostic Procedure .......................................... 178 . 17. A/T Does Not Shift: D4 D 3 , When Overdrive
Component Inspection ......................................... 179 . Control Switch "ON" "OFF" .............................. 233 .
DTC P1705 ACCELERATOR PEDAL POSITION 18. A/T Does Not Shift: D3 22 , When Selector
(APP) SENSOR ...................................................... 180 . Lever "D" "2" Position ...................................... 234 .
Description ........................................................... 180
. 19. A/T Does Not Shift: 22 11 , When Selector
Wiring Diagram -- AT -- TPS ............................. 182 . Lever "2" "1" Position ....................................... 235 .
Diagnostic Procedure .......................................... 183 . 20. Vehicle Does Not Decelerate By Engine Brake.235
DTC P1760 OVERRUN CLUTCH SOLENOID 21. TCM Self-diagnosis Does Not Activate (PNP &
VALVE .................................................................... 185
. Overdrive Control Switches, and Throttle Position
Description ........................................................... 185
. Sensor Circuit Checks) ........................................ 236 .
Wiring Diagram -- AT -- OVRCSV ..................... 187 .
Diagnostic Procedure .......................................... 188 . EXC.F/EURO-OBD
Component Inspection ......................................... 189 .
DTC U1000 CAN COMMUNICATION LINE ........... 190 . ON BOARD DIAGNOSTIC SYSTEM DESCRIP-
Description ........................................................... 190
.
AT-2
TION ....................................................................... 243
. ALL
CONSULT-II ........................................................ 243 . A
Diagnostic Procedure Without CONSULT-II ........ 249 . MAIN POWER SUPPLY AND GROUND CIRCUIT. 340
TROUBLE DIAGNOSIS -- INTRODUCTION ........ 254 . Wiring Diagram -- AT -- MAIN ........................... 340 .
Introduction ......................................................... 254
. Diagnostic Procedure .......................................... 341 .
VEHICLE SPEED SENSOR - A/T (REVOLUTION B
Work Flow ........................................................... 258.
TROUBLE DIAGNOSIS -- BASIC INSPECTION . 260 SENSOR) ............................................................... 343.
A/T Fluid Check ................................................... 260 . Description ........................................................... 343
.
Stall Test .............................................................. 261
. Wiring Diagram -- AT -- VSSAT ......................... 345 . AT
Line Pressure Test .............................................. 264 . Diagnostic Procedure .......................................... 346 .
Road Test ............................................................ 265
. DTC VEHICLE SPEED SENSOR MTR ................. 348 .
TROUBLE DIAGNOSIS -- GENERAL DESCRIP- Description ........................................................... 348
. D
TION ....................................................................... 282
. Wiring Diagram -- AT -- VSSMTR ..................... 349 .
Symptom Chart ................................................... 282 . Diagnostic Procedure .......................................... 350 .
TCM Terminals and Reference Value .................. 301 . ACCELE RATOR PEDAL POSITION (APP) SEN-
E
CAN COMMUNICATION ....................................... 304 . SOR ........................................................................ 351
.
System Description ............................................. 304 . Description ........................................................... 351
.
CANCommunicationUnitForLHDModelswith Tyre Wiring Diagram -- AT -- TPS ............................. 353 .
Pressure Monitoring System ............................... 304 . Diagnostic Procedure .......................................... 354 . F
CAN Communication Unit For LHD Models without SHIFT SOLENOID VALVE A ................................. 356 .
Tyre Pressure Monitoring System ....................... 305 . Description ........................................................... 356
.
CAN Communication Unit For RHD Models with Wiring Diagram -- AT -- SSV/A .......................... 358 . G
Tyre Pressure Monitoring System ....................... 306 . Diagnostic Procedure .......................................... 359 .
CAN Communication Unit For RHD Models without Component Inspection ......................................... 360 .
Tyre Pressure Monitoring System ....................... 307 . SHIFT SOLENOID VALVE B ................................. 361 .
H
TROUBLE DIAGNOSES FOR SYMPTOMS ......... 308 . Description ........................................................... 361
.
Wiring Diagram -- AT -- NONDTC ..................... 308 . Wiring Diagram -- AT -- SSV/B .......................... 363 .
1. O/D OFF Indicator Lamp Does Not Come On . 310 Diagnostic Procedure .......................................... 364 .
Component Inspection ......................................... 365 . I
2. Engine Cannot Be Started In "P" and "N" Position ..311
3. In "P" Position, Vehicle Moves Forward Or Back- OVERRUN CLUTCH SOLENOID VALVE .............. 366 .
ward When Pushed ............................................. 312 . Description ........................................................... 366
.
4. In "N" Position, Vehicle Moves ........................ 312 . Wiring Diagram -- AT -- OVRCSV ..................... 368 . J
5. Large Shock. "N" "R" Position ..................... 313 . Diagnostic Procedure .......................................... 369 .
6. Vehicle Does Not Creep Backward In "R" Position 314 . Component Inspection ......................................... 369 .
7. Vehicle Does Not Creep Forward In "D", "2" Or TORQUE CONVERTER CLUTCH SOLENOID K
"1" Position .......................................................... 316
. VALVE .................................................................... 371
.
8. Vehicle Cannot Be Started From D1 ................ 318 . Description ........................................................... 371
.
9. A/T Does Not Shift: D1 D 2 Or Does Not Kick Wiring Diagram -- AT -- TCV ............................. 373 .
Diagnostic Procedure .......................................... 374 . L
down: D4 D2 .................................................... 320 .
10. A/T Does Not Shift: D2 D 3 ........................ 322 . Component Inspection ......................................... 375 .
11. A/T Does Not Shift: D3 D 4 ......................... 324 . BATT/FLUID TEMP SEN (A/T FLUID TEMP SEN-
12. A/T Does Not Perform Lock-up ..................... 326 . SOR CIRCUIT AND TCM POWER SOURCE) ...... 376 . M
13. A/T Does Not Hold Lock-up Condition .......... 327 . Description ........................................................... 376
.
14. Lock-up Is Not Released ............................... 329 . Wiring Diagram -- AT -- BA/FTS ........................ 378 .
15. Engine Speed Does Not Return To Idle (Light Diagnostic Procedure .......................................... 379 .
Braking D4 D3 ) ............................................... 329 . Component Inspection ......................................... 381 .
16. Vehicle Does Not Start From D1 .................... 331 . ENGINE SPEED SIGNAL ...................................... 382 .
17. A/T Does Not Shift: D4 D3 , When Overdrive Description ........................................................... 382
.
Control Switch "ON" "OFF" ............................. 331 . Wiring Diagram -- AT -- ENGSS ........................ 383 .
18. A/T Does Not Shift: D3 22 , When Selector Diagnostic Procedure .......................................... 384 .
Lever "D" "2" Position ..................................... 332 . LINE PRESSURE SOLENOID VALVE .................. 386 .
19. A/T Does Not Shift: 22 11 , When Selector Description ........................................................... 386
.
Lever "2" "1" Position ...................................... 332 . Wiring Diagram -- AT -- LPSV ........................... 388 .
20. Vehicle Does Not Decelerate By Engine Brake 333 . Diagnostic Procedure .......................................... 389 .
21. TCM Self-diagnosis Does Not Activate (PNP & Component Inspection ......................................... 390 .
Overdrive Control Switches, and Throttle Position CAN COMMUNICATION LINE .............................. 393 .
Sensor Circuit Checks) ....................................... 333 . Description ........................................................... 393
.
On Board Diagnosis Logic ................................... 393 .
AT-3
Self-Diagnosis Code Confirmation Procedure ..... 393 . Forward and Overrun Clutches ............................ 462 .
Wiring Diagram -- AT -- CAN ............................. 394 . Low & Reverse Brake .......................................... 468 .
Diagnostic Procedure .......................................... 395 . Rear Internal Gear, Forward Clutch Hub and Over-
A/T SHIFT LOCK SYSTEM .................................... 396 . run Clutch Hub ..................................................... 471
.
Description ........................................................... 396
. OutputShaft,Idler Gear,ReductionPinion Gear and
Shift Lock System Electrical Parts Location ........ 396 . Bearing Retainer .................................................. 475.
Wiring Diagram -- SHIFT -- ............................... 397 . Band Servo Piston Assembly ............................... 480 .
Diagnostic Procedure .......................................... 398 . Final Drive ............................................................ 485
.
KEY INTERLOCK CABLE ..................................... 402 . ASSEMBLY ............................................................ 494
.
Components ........................................................ 402 . Assembly (1) ........................................................ 494
.
Removal .............................................................. 402
. Adjustment (1) ...................................................... 495
.
Installation ............................................................ 403
. Assembly (2) ........................................................ 500
.
ON-VEHICLE SERVICE ......................................... 404 . Adjustment (2) ...................................................... 507
.
Control Valve Assembly and Accumulators ......... 404 . Assembly (3) ........................................................ 510
.
Control Cable Adjustment .................................... 406 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 517 .
Park/Neutral Position (PNP) Switch Adjustment .. 406 . General Specifications ......................................... 517 .
Differential Side Oil Seal Replacement ................ 407 . Shift Schedule ...................................................... 517
.
Revolution Sensor Replacement ......................... 407 . Stall Revolution .................................................... 517
.
REMOVAL AND INSTALLATION .......................... 408 . Line Pressure ....................................................... 517
.
Removal .............................................................. 408
. Control Valves ...................................................... 518
.
Installation ............................................................ 409
. Clutch and Brakes ................................................ 518 .
OVERHAUL ............................................................ 411. Clutch and Brake Return Springs ........................ 520 .
OutputShaft, IdlerGear,Reduction Pinion Gearand Oil Pump .............................................................. 520
.
Bearing Retainer .................................................. 411 . Input Shaft ............................................................ 520
.
Oil Channel .......................................................... 414
. Final Drive ............................................................ 521
.
Locations of Adjusting Shims, Needle Bearings, Reduction Pinion Gear ......................................... 522 .
Thrust Washers and Snap Rings ......................... 415 . Output Shaft ......................................................... 524
.
DISASSEMBLY ...................................................... 416 . Bearing Retainer .................................................. 525.
Disassembly ........................................................ 416. Total End Play ...................................................... 525
.
REPAIR FOR COMPONENT PARTS ..................... 432 . Reverse Clutch End Play ..................................... 525 .
Manual Shaft ....................................................... 432. Band Servo .......................................................... 526
.
Oil Pump .............................................................. 435
. Removal and Installation ...................................... 526 .
Control Valve Assembly ....................................... 439 . Shift Solenoid Valves ........................................... 526 .
Control Valve Upper Body ................................... 448 . Solenoid Valves ................................................... 526.
Control Valve Lower Body ................................... 451 . A/T Fluid Temperature Sensor ............................. 526 .
Reverse Clutch .................................................... 454 . Revolution Sensor ................................................ 526 .
High Clutch .......................................................... 457
. Dropping Resistor ................................................ 526 .
AT-4
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" ECS005U9
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual. AT
WARNING:
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. D
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. E
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness connec-
tors. F
Precautions for On Board Diagnostic (EURO-OBD) System of A/T and Engine --
Euro-OBD -- ECS005UA
G
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION: H
q Be sure to turn the ignition switch "OFF" and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MI to light up.
I
q Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
q Be sure to route and secure the harnesses properly after work. Interference of the harness with a J
bracket, etc. may cause the MI to light up due to a short circuit.
q Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to a malfunction of the EGR system or fuel injection system, etc. K
q Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
L
Precautions for Trouble Diagnosis ECS005UB
CAN SYSTEM
q Do not apply voltage of 7.0V or higher to the measurement terminals. M
q Use the tester with its open terminal voltage being 7.0V or less.
Precautions for Harness Repair ECS005UC
CAN SYSTEM
q Solder the repaired parts, and wrap with tape. [Frays of twisted
line must be within 110 mm (4.33 in)]
PKIA0306E
AT-5
PRECAUTIONS
q Do not perform bypass wire connections for the repair
parts.(The spliced wire will become separated and the charac-
teristics of twisted line will be lost.)
PKIA0307E
Precautions ECS005UD
q Before connecting or disconnecting the TCM harness con-
nector, turn ignition switch OFF and disconnect negative
battery terminal. Failure to do so may damage the TCM.
Because battery voltage is applied to TCM even if ignition
switch is turned off.
SEF289H
q When connecting or disconnecting pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on TCM
pin terminal, when connecting pin connectors.
AAT470A
q Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly
or not. (See page AT-103, "TCM Terminals and Reference
Value".)
MEF040DA
AT-6
PRECAUTIONS
q After performing each TROUBLE DIAGNOSIS, perform
"DTC (Diagnostic Trouble Code) CONFIRMATION PROCE- A
DURE".
The DTC should not be displayed in the "DTC CONFIRMA-
TION PROCEDURE" if the repair is completed.
B
q Before proceeding with disassembly, thoroughly clean the out-
side of the transaxle. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.
AT
q Disassembly should be done in a clean work area.
q Use lint-free cloth or towels for wiping parts clean. Common
SAT652J
shop rags can leave fibers that could interfere with the operation
of the transaxle. D
q Place disassembled parts in order for easier and proper assembly.
q All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
E
reassembly.
q Gaskets, seals and O-rings should be replaced any time the transaxle is disassembled.
q It is very important to perform functional tests whenever they are indicated.
F
q The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.
G
q Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
q Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.
H
q Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
q After overhaul, refill the transaxle with new ATF.
q When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque I
converter and ATF cooling system.
Always follow the procedures under AT-12, "Changing A/T Fluid" when changing A/T fluid.
Service Notice or Precautions ECS005UE J
FAIL-SAFE
The TCM has an electronic Fail-Safe (limp home mode). This allows the vehicle to be driven even if a major
electrical input/output device circuit is damaged. K
Under Fail-Safe, the vehicle always runs in third gear, even with a shift lever position of "1", "2" or "D". The cus-
tomer may complain of sluggish or poor acceleration.
When the ignition key is turned "ON" following Fail-Safe operation, O/D OFF indicator lamp blinks for about 8
seconds. Refer to AT-249, "Diagnostic Procedure Without CONSULT-II" (EXCEPT FOR EURO-OBD) or AT- L
49, "TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" (EURO-OBD).
The blinking of the O/D OFF indicator lamp for about 8 seconds will appear only once and be cleared. The
customer may resume normal driving conditions. M
Always follow the "Work Flow", refer to AT-258 (EXCEPT FOR Euro-OBD) or AT-58 (Euro-OBD).
The SELF-DIAGNOSIS results will be as follows:
q The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
q During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
TORQUE CONVERTER SERVICE
The torque converter should be replaced under any of the following conditions:
q External leaks in the hub weld area.
q Converter hub is scored or damaged.
q Converter pilot is broken, damaged or fits poorly into crankshaft.
q Steel particles are found after flushing the cooler and cooler lines.
q Pump is damaged or steel particles are found in the converter.
q Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
q Converter is contaminated with engine coolant containing antifreeze.
AT-7
PRECAUTIONS
q Internal failure of stator roller clutch.
q Heavy clutch debris due to overheating (blue converter).
q Steel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are
worn or damaged -- indicates that lining material came from converter.
The torque converter should not be replaced if:
q The fluid has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
q The threads in one or more of the converter bolt holes are damaged.
q Transaxle failure did not display evidence of damaged or worn internal parts, steel particles or clutch plate
lining material in unit and inside the fluid filter.
q Vehicle has been exposed to high mileage (only). The exception may be where the torque converter
clutch dampener plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic,
such as taxi, delivery or police use.
EURO-OBD SELF-DIAGNOSIS -- EURO-OBD --
q A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the O/D OFF indicator lamp or the malfunction indicator (MI). Refer to the table on
AT-40, "SELF-DIAGNOSTIC RESULT TEST MODE" for the indicator used to display each self-diagnostic
result.
q The self-diagnostic results indicated by the MI are automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure AT-37, "HOW TO ERASE DTC" to complete the repair and avoid
unnecessary blinking of the MI.
q The following self-diagnostic items can be detected using ECM self-diagnostic results mode* only when
the O/D OFF indicator lamp does not indicate any malfunctions.
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