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TM


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TRANSMISSION & DRIVELINE




                                                                                                                             TM
                                                                                                                                                                    A


                                                                                                                                                                    B
                                                                                                 SECTION
                                                              TRANSAXLE & TRANSMISSION                                                                              C


                                                                                                                                                                    TM


                                                                                                                                                                    E
                                                                 CONTENTS
BASIC INSPECTION ................................... 6
                                                .                                DTC U1000 CAN COMMUNICATION LINE ..... 44                                          F
                                                                                   Description ..............................................................44
                                                                                                                                                         .
DIAGNOSIS AND REPAIR WORKFLOW ......... 6
                                  .                                                On Board Diagnosis Logic ......................................44     .
  Work Flow ................................................................ 6
                                                                      .            Possible Cause .......................................................44
                                                                                                                                                         .          G
  Diagnostic Work Sheet ............................................. 7
                                                                      .            DTC Confirmation Procedure .................................44        .
                                                                                   Diagnosis Procedure ..............................................44  .
FUNCTION DIAGNOSIS .............................. 9
                                             .
                                                                                 DTC P0615 START SIGNAL CIRCUIT ............. 45                                    H
A/T CONTROL SYSTEM .................................... 9
                                                  .                                Description ..............................................................45
                                                                                                                                                           .
  Cross-Sectional View (2WD models) ....................... 9          .           CONSULT-III Reference Value in Data Monitor
  Cross-Sectional View (4WD models) ..................... 10           .           Mode .......................................................................45
                                                                                                                                                           .         I
  Shift Mechanism ..................................................... 10
                                                                       .           On Board Diagnosis Logic ......................................45       .
  TCM Function ......................................................... 22
                                                                       .           Possible Cause .......................................................45.
  CAN Communication .............................................. 24  .           DTC Confirmation Procedure .................................45          .
  Input/Output Signal of TCM .................................... 25   .                                                                                            J
                                                                                   Diagnosis Procedure ..............................................45    .
  Line Pressure Control ............................................ 25.
  Shift Control ........................................................... 27
                                                                       .         DTC P0700 TCM ............................................... 48
  Lock-up Control ...................................................... 28
                                                                       .           Description ..............................................................48
                                                                                                                                                         .          K
  Engine Brake Control ............................................. 29.           On Board Diagnosis Logic ......................................48     .
  Control Valve .......................................................... 29
                                                                       .           Possible Cause .......................................................48
                                                                                                                                                         .
  Component Parts Location ..................................... 31    .           DTC Confirmation Procedure .................................48        .          L
                                                                                   Diagnosis Procedure ..............................................48  .
A/T SHIFT LOCK SYSTEM ...............................32
                                                 .
  System Description ................................................ 32
                                                                 .               DTC P0705 PARK/NEUTRAL POSITION
  Component Parts Location ..................................... 32
                                                                 .               SWITCH ............................................................. 49            M
                                                                                   Description ..............................................................49
                                                                                                                                                           .
ON BOARD DIAGNOSTIC (OBD) SYSTEM .....33
                                  .                                                CONSULT-III Reference Value in Data Monitor
  Introduction ............................................................ 33
                                                                       .                                                                                            N
                                                                                   Mode .......................................................................49
                                                                                                                                                           .
  OBD-II Function for A/T System ............................. 33      .
                                                                                   On Board Diagnosis Logic ......................................49       .
  One or Two Trip Detection Logic of OBD-II ........... 33             .
                                                                                   Possible Cause .......................................................49.
  OBD-II Diagnostic Trouble Code (DTC) ................. 33            .
                                                                                   DTC Confirmation Procedure .................................49          .        O
  Malfunction Indicator Lamp (MIL) ........................... 34      .
                                                                                   Diagnosis Procedure ..............................................49    .
DIAGNOSIS SYSTEM (TCM) ............................35
                                               .                                 DTC P0717 TURBINE REVOLUTION SEN-
  CONSULT-III Function (TRANSMISSION) ............ 35                 .                                                                                             P
                                                                                 SOR ................................................................... 52
  Diagnosis Procedure without CONSULT-III (Floor
                                                                                   Description ..............................................................52
                                                                                                                                                           .
  Shift Models) .......................................................... 40
                                                                      .
                                                                                   CONSULT-III Reference Value in Data Monitor
  Diagnosis Procedure without CONSULT-III (Col-
                                                                                   Mode .......................................................................52
                                                                                                                                                           .
  umn Shift Models) .................................................. 41
                                                                      .
                                                                                   On Board Diagnosis Logic ......................................52       .
COMPONENT DIAGNOSIS ........................ 44
                                         .                                         Possible Cause .......................................................52.
                                                                                   DTC Confirmation Procedure .................................52          .


Revision: November 2008                                                    TM-1                                                                   2009 Titan
  Diagnosis Procedure ............................................. 52
                                                                .                    On Board Diagnosis Logic ..................................... 69 .
                                                                                     Possible Cause ...................................................... 69
                                                                                                                                                       .
DTC P0720 VEHICLE SPEED SENSOR A/T                                                   DTC Confirmation Procedure ................................. 69   .
(REVOLUTION SENSOR) ................................ 54
                                                 .                                   Diagnosis Procedure .............................................. 69
                                                                                                                                                       .
  Description ............................................................. 54
                                                                          .
  CONSULT-III Reference Value in Data Monitor                                      DTC P0744 A/T TCC S/V FUNCTION (LOCK-
  Mode ...................................................................... 54
                                                                          .        UP) .................................................................... 71
                                                                                                                                                        .
  On Board Diagnosis Logic ..................................... 54       .          Description ............................................................. 71
                                                                                                                                                             .
  Possible Cause ...................................................... 54.          CONSULT-III Reference Value in Data Monitor
  DTC Confirmation Procedure ................................ 54          .          Mode ...................................................................... 71
                                                                                                                                                             .
  Diagnosis Procedure ............................................. 55    .          On Board Diagnosis Logic ..................................... 71       .
                                                                                     Possible Cause ...................................................... 71.
DTC P0725 ENGINE SPEED SIGNAL ............. 57
                                        .                                            DTC Confirmation Procedure ................................. 71         .
  Description ............................................................. 57
                                                                          .          Diagnosis Procedure .............................................. 72   .
  CONSULT-III Reference Value in Data Monitor
  Mode ...................................................................... 57
                                                                          .        DTC P0745 LINE PRESSURE SOLENOID
  On Board Diagnosis Logic ..................................... 57       .        VALVE .............................................................. 73
                                                                                                                                                    .
  Possible Cause ...................................................... 57.          Description ............................................................. 73
                                                                                                                                                             .
  DTC Confirmation Procedure ................................ 57          .          CONSULT-III Reference Value in Data Monitor
  Diagnosis Procedure ............................................. 57    .          Mode ...................................................................... 73
                                                                                                                                                             .
                                                                                     On Board Diagnosis Logic ..................................... 73       .
DTC P0731 A/T 1ST GEAR FUNCTION .......... 59
                                       .                                             Possible Cause ...................................................... 73.
  Description ............................................................. 59
                                                                        .            DTC Confirmation Procedure ................................. 73         .
  On Board Diagnosis Logic ..................................... 59     .            Diagnosis Procedure .............................................. 73   .
  Possible Cause ...................................................... 59
                                                                        .
  DTC Confirmation Procedure ................................ 59        .          DTC P1705 THROTTLE POSITION SENSOR... 75
  Diagnosis Procedure ............................................. 60  .            Description ............................................................. 75
                                                                                                                                                             .
                                                                                     CONSULT-III Reference Value in Data Monitor
DTC P0732 A/T 2ND GEAR FUNCTION .......... 61
                                       .                                             Mode ...................................................................... 75
                                                                                                                                                             .
  Description ............................................................. 61
                                                                        .            On Board Diagnosis Logic ..................................... 75       .
  On Board Diagnosis Logic ..................................... 61     .            Possible Cause ...................................................... 75.
  Possible Cause ...................................................... 61
                                                                        .            DTC Confirmation Procedure ................................. 75         .
  DTC Confirmation Procedure ................................ 61        .            Diagnosis Procedure .............................................. 75   .
  Diagnosis Procedure ............................................. 62  .
                                                                                   DTC P1710 A/T FLUID TEMPERATURE SEN-
DTC P0733 A/T 3RD GEAR FUNCTION .......... 63
                                       .                                           SOR CIRCUIT ................................................... 77
                                                                                                                                               .
  Description ............................................................. 63
                                                                        .            Description ............................................................. 77
                                                                                                                                                             .
  On Board Diagnosis Logic ..................................... 63     .
                                                                                     CONSULT-III Reference Value in Data Monitor
  Possible Cause ...................................................... 63
                                                                        .            Mode ...................................................................... 77
                                                                                                                                                             .
  DTC Confirmation Procedure ................................ 63        .
                                                                                     On Board Diagnosis Logic ..................................... 77       .
  Diagnosis Procedure ............................................. 64  .            Possible Cause ...................................................... 77.
DTC P0734 A/T 4TH GEAR FUNCTION .......... 65
                                       .                                             DTC Confirmation Procedure ................................. 77         .
  Description ............................................................. 65
                                                                        .            Diagnosis Procedure .............................................. 77   .
  On Board Diagnosis Logic ..................................... 65     .            Component Inspection ........................................... 78     .
  Possible Cause ...................................................... 65
                                                                        .          DTC P1721 VEHICLE SPEED SENSOR MTR... 79
  DTC Confirmation Procedure ................................ 65        .
                                                                                     Description ............................................................. 79
                                                                                                                                                             .
  Diagnosis Procedure ............................................. 66  .
                                                                                     CONSULT-III Reference Value in Data Monitor
DTC P0735 A/T 5TH GEAR FUNCTION .......... 67
                                       .                                             Mode ...................................................................... 79
                                                                                                                                                             .
  Description ............................................................. 67
                                                                        .            On Board Diagnosis Logic ..................................... 79       .
  On Board Diagnosis Logic ..................................... 67     .            Possible Cause ...................................................... 79.
  Possible Cause ...................................................... 67
                                                                        .            DTC Confirmation Procedure ................................. 79         .
  DTC Confirmation Procedure ................................ 67        .            Diagnosis Procedure .............................................. 79   .
  Diagnosis Procedure ............................................. 68  .          DTC P1730 A/T INTERLOCK ........................... 81
                                                                                                                                   .
DTC P0740 TORQUE CONVERTER CLUTCH                                                    Description ............................................................. 81
                                                                                                                                                           .
SOLENOID VALVE ........................................... 69
                                                       .                             On Board Diagnosis Logic ..................................... 81     .
                                                                                     Possible Cause ...................................................... 81
                                                                                                                                                           .
  Description ............................................................. 69
                                                                          .
                                                                                     DTC Confirmation Procedure ................................. 81       .
  CONSULT-III Reference Value in Data Monitor
                                                                                     Judgement of A/T Interlock .................................... 81    .
  Mode ...................................................................... 69
                                                                          .
Revision: November 2008                                                       TM-2                                                                  2009 Titan
  Diagnosis Procedure .............................................. 81
                                                                .                  DTC P1774 LOW COAST BRAKE SOLENOID
                                                                                   VALVE FUNCTION ........................................... 95                        A
DTC P1731 A/T 1ST ENGINE BRAKING .........83
                                      .                                              Description ..............................................................95
                                                                                                                                                             .
  Description ............................................................. 83
                                                                         .
                                                                                     CONSULT-III Reference Value in Data Monitor
  CONSULT-III Reference Value in Data Monitor                                        Mode .......................................................................95
                                                                                                                                                             .
  Mode ...................................................................... 83
                                                                         .                                                                                              B
                                                                                     On Board Diagnosis Logic ......................................95       .
  On Board Diagnosis Logic ..................................... 83      .
                                                                                     Possible Cause .......................................................95.
  Possible Cause ...................................................... 83
                                                                         .
                                                                                     DTC Confirmation Procedure .................................95          .
  DTC Confirmation Procedure ................................. 83        .                                                                                              C
                                                                                     Diagnosis Procedure ..............................................96    .
  Diagnosis Procedure .............................................. 83  .
                                                                                   DTC P1815 MANUAL MODE SWITCH ............ 97
DTC P1752 INPUT CLUTCH SOLENOID                                                      Description ..............................................................97
                                                                                                                                                             .          TM
VALVE ...............................................................85
                                                                 .                   CONSULT-III Reference Value in Data Monitor
  Description ............................................................. 85
                                                                         .           Mode .......................................................................97
                                                                                                                                                             .
  CONSULT-III Reference Value in Data Monitor                                        On Board Diagnosis Logic ......................................97       .
  Mode ...................................................................... 85
                                                                         .                                                                                              E
                                                                                     Possible Cause .......................................................97.
  On Board Diagnosis Logic ..................................... 85      .           DTC Confirmation Procedure .................................97          .
  Possible Cause ...................................................... 85
                                                                         .           Diagnosis Procedure ..............................................97    .
  DTC Confirmation Procedure ................................. 85        .           Component Inspection ............................................98     .          F
  Diagnosis Procedure .............................................. 85  .           Position Indicator Lamp ..........................................98    .
DTC P1757 FRONT BRAKE SOLENOID                                                     MAIN POWER SUPPLY AND GROUND CIR-                                                    G
VALVE ...............................................................87
                                                                 .                 CUIT ................................................................ 100
  Description ............................................................. 87
                                                                         .           Diagnosis Procedure ............................................ 100
                                                                                                                                                   .
  CONSULT-III Reference Value in Data Monitor
  Mode ...................................................................... 87
                                                                         .         CLOSED THROTTLE POSITION AND WIDE                                                    H
  On Board Diagnosis Logic ..................................... 87      .         OPEN THROTTLE POSITION CIRCUIT ......... 103
  Possible Cause ...................................................... 87
                                                                         .           CONSULT-III Reference Value in Data Monitor
  DTC Confirmation Procedure ................................. 87        .           Mode ..................................................................... 103
                                                                                                                                                             .           I
  Diagnosis Procedure .............................................. 87  .           Diagnosis Procedure ............................................ 103    .
DTC P1762 DIRECT CLUTCH SOLENOID                                                   BRAKE SIGNAL CIRCUIT .............................. 104
VALVE ...............................................................89
                                                                 .                                                                                                      J
                                                                                     CONSULT-III Reference Value in Data Monitor
  Description ............................................................. 89
                                                                         .           Mode ..................................................................... 104
                                                                                                                                                             .
  CONSULT-III Reference Value in Data Monitor                                        Diagnosis Procedure ............................................ 104    .
  Mode ...................................................................... 89
                                                                         .                                                                                              K
  On Board Diagnosis Logic ..................................... 89      .         TOW MODE SWITCH ..................................... 105
  Possible Cause ...................................................... 89
                                                                         .           Description ............................................................ 105
                                                                                                                                                           .
  DTC Confirmation Procedure ................................. 89        .           Diagnosis Procedure ............................................ 105  .            L
  Diagnosis Procedure .............................................. 89  .
                                                                                   A/T SHIFT LOCK SYSTEM ............................. 106
DTC P1767 HIGH AND LOW REVERSE                                                       Wiring Diagram - A/T Shift Lock System - Floor
CLUTCH SOLENOID VALVE ...........................91
                                             .                                       Shift ...................................................................... 106
                                                                                                                                                               .        M
  Description ............................................................. 91
                                                                         .           Wiring Diagram - A/T Shift Lock System - Column
  CONSULT-III Reference Value in Data Monitor                                        Shift ...................................................................... 110
                                                                                                                                                               .
  Mode ...................................................................... 91
                                                                         .           Terminals And Reference Values ......................... 113              .        N
  On Board Diagnosis Logic ..................................... 91      .           Component Inspections (Floor Shift Models) ....... 113                    .
  Possible Cause ...................................................... 91
                                                                         .           Component Inspections (Column Shift Models) ... 115                       .
  DTC Confirmation Procedure ................................. 91        .                                                                                              O
  Diagnosis Procedure .............................................. 91  .
                                                                                   ECU DIAGNOSIS ...................................... 117
                                                                                                                                      .

DTC P1772 LOW COAST BRAKE SOLENOID                                                 TCM ................................................................. 117
                                                                                     Reference Value ................................................... 117.           P
VALVE ...............................................................93
                                                                 .
                                                                                     Wiring Diagram -- A/T CONTROL SYSTEM -- ... 119                        .
  Description ............................................................. 93
                                                                         .
                                                                                     Fail-Safe ............................................................... 128
                                                                                                                                                            .
  CONSULT-III Reference Value in Data Monitor
                                                                                     DTC Inspection Priority Chart ............................... 130      .
  Mode ...................................................................... 93
                                                                         .
                                                                                     DTC No. Index ...................................................... 130
                                                                                                                                                            .
  On Board Diagnosis Logic ..................................... 93      .
                                                                                     DTC Alphabetical Index ........................................ 131    .
  Possible Cause ...................................................... 93
                                                                         .
  DTC Confirmation Procedure ................................. 93        .         SYMPTOM DIAGNOSIS ........................... 133
                                                                                                                               .
  Diagnosis Procedure .............................................. 93  .

Revision: November 2008                                                      TM-3                                                                     2009 Titan
SYSTEM SYMPTOM ...................................... 133
                                                    .                            A/T FLUID COOLER ....................................... 204
                                                                                                                                       .
  A/T Check Indicator Lamp Does Not Come On ....133                      .         A/T Fluid Cooler Cleaning .................................... 204     .
  Engine Cannot Be Started in "P" or "N" Position ..133                            Inspection ............................................................. 206
                                                                                                                                                          .
  In "P" Position, Vehicle Moves When Pushed ......134                   .
  In "N" Position, Vehicle Moves .............................134        .       STALL TEST ................................................... 207
                                                                                                                                             .
  Large Shock("N" to "D" Position) ..........................136         .         Inspection and Judgment ..................................... 207
                                                                                                                                               .
  Vehicle Does Not Creep Backward in "R" Position..138
                                                                                 LINE PRESSURE TEST .................................. 209
                                                                                                                                    .
  Vehicle Does Not Creep Forward in "D" Position ..140
                                                                                   Inspection and Judgment ..................................... 209
                                                                                                                                               .
  Vehicle Cannot Be Started from D1 .....................143             .
  A/T Does Not Shift: D1D2 .................................145          .       ROAD TEST .................................................... 211
                                                                                                                                             .
  A/T Does Not Shift: D2D3 .................................146          .         Description ........................................................... 211
                                                                                                                                                         .
  A/T Does Not Shift: D3D4 .................................148          .         Check Before Engine Is Started ........................... 211        .
  A/T Does Not Shift: D4D5 .................................150          .         Check At Idle ........................................................ 211
                                                                                                                                                         .
  A/T Does Not Perform Lock-up ............................152           .         Cruise Test - Part 1 .............................................. 212
                                                                                                                                                         .
  A/T Does Not Hold Lock-up Condition ..................154              .         Cruise Test - Part 2 .............................................. 214
                                                                                                                                                         .
  Lock-up Is Not Released ......................................155      .         Cruise Test - Part 3 .............................................. 215
                                                                                                                                                         .
  Engine Speed Does Not Return to Idle ................156               .         Vehicle Speed When Shifting Gears .................... 215            .
  Cannot Be Changed to Manual Mode (Column                                         Vehicle Speed When Performing and Releasing
  Shift Models) .........................................................157
                                                                         .         Complete Lock-up ................................................ 215 .
  A/T Does Not Shift: 5th gear4th gear (Floor Shift
  Models) .................................................................158
                                                                         .       A/T POSITION ................................................. 216
                                                                                                                                             .
  A/T Does Not Shift: 5th gear4th gear (Column                                     Adjustment of A/T Position ................................... 216
                                                                                                                                                 .
  Shift Models) .........................................................160
                                                                         .         Checking of A/T Position ...................................... 216
                                                                                                                                                 .
  A/T Does Not Shift: 4th gear3rd gear (Floor Shift
  Models) .................................................................161
                                                                         .       ON-VEHICLE REPAIR .............................. 217
  A/T Does Not Shift: 4th gear3rd gear (Column
  Shift Models) .........................................................163
                                                                         .
                                                                                 SHIFT CONTROL SYSTEM ............................ 217
                                                                                                                                .
                                                                                   Control Device Removal and Installation ............. 217     .
  A/T Does Not Shift: 3rd gear2nd gear (Floor
                                                                                   Adjustment of A/T Position ................................... 219
                                                                                                                                                 .
  Shift Models) .........................................................164
                                                                         .
                                                                                   Checking of A/T Position ...................................... 219
                                                                                                                                                 .
  A/T Does Not Shift: 3rd gear2nd gear (Column
  Shift Models) .........................................................166
                                                                         .       AIR BREATHER HOSE ................................... 220
                                                                                                                                    .
  A/T Does Not Shift: 2nd gear1st gear (Floor                                      Removal and Installation ...................................... 220
                                                                                                                                                 .
  Shift Models) .........................................................167
                                                                         .
  A/T Does Not Shift: 2nd gear1st gear (Column                                   OIL PAN ........................................................... 222
                                                                                                                                                  .
  Shift Models) .........................................................169
                                                                         .         Oil Pan ................................................................. 222
                                                                                                                                                           .
  Vehicle Does Not Decelerate By Engine Brake ....171                    .
  Symptom Table ....................................................173  .       CONTROL VALVE WITH TCM ....................... 224
                                                                                                                             .
                                                                                   Control Valve with TCM and A/T Fluid Tempera-
PRECAUTION ........................................... 195
                                                    .                              ture Sensor 2 ....................................................... 224
                                                                                                                                                       .

PRECAUTIONS .............................................. 195
                                                         .                       REAR OIL SEAL ............................................. 233
                                                                                                                                          .
  Precaution for Supplemental Restraint System                                     Rear Oil Seal ........................................................ 233
                                                                                                                                                        .
  (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
  SIONER" ...............................................................195
                                                                       .         REMOVAL AND INSTALLATION ............. 234
  Precautions for On Board Diagnosis (OBD) Sys-
  tem of A/T and Engine ..........................................195  .
                                                                                 TRANSMISSION ASSEMBLY ......................... 234
                                                                                                                              .
                                                                                   Removal and Installation (2WD) .......................... 234
                                                                                                                                           .
  Precautions ...........................................................195
                                                                       .
                                                                                   Removal and Installation (4WD) .......................... 236
                                                                                                                                           .
  Service Notice or Precautions ..............................196      .

PREPARATION ......................................... 198
                                                   .                             DISASSEMBLY AND ASSEMBLY ........... 240

PREPARATION .............................................. 198
                                                         .                       OVERHAUL ..................................................... 240
                                                                                                                                             .
                                                                                   Component .......................................................... 240
                                                                                                                                                        .
  Special Service Tool .............................................198
                                                                  .
                                                                                   Oil Channel .......................................................... 247
                                                                                                                                                        .
  Commercial Service Tool .....................................199.
                                                                                   Location of Adjusting Shims, Needle Bearings,
ON-VEHICLE MAINTENANCE ................. 200
                                      .                                            Thrust Washers and Snap Rings ......................... 249          .

A/T FLUID ....................................................... 200
                                                                .                DISASSEMBLY ............................................... 252
                                                                                                                                          .
  Checking the A/T Fluid (ATF) ...............................200
                                                            .                      Disassembly ......................................................... 252
                                                                                                                                                       .
  Changing the A/T Fluid (ATF) ...............................202
                                                            .

Revision: November 2008                                                     TM-4                                                                  2009 Titan
REPAIR FOR COMPONENT PARTS ............. 270
                                      .                                         SERVICE DATA AND SPECIFICATIONS
  Oil Pump .............................................................. 270
                                                                       .        (SDS) ............................................................... 311             A
  Front Sun Gear, 3rd One-Way Clutch .................. 272            .          General Specification ........................................... 311      .
  Front Carrier, Input Clutch, Rear Internal Gear .... 274             .          Vehicle Speed at Which Gear Shifting Occurs ..... 311                      .
  Mid Sun Gear, Rear Sun Gear, High and Low Re-                                   Vehicle Speed at Which Lock-up Occurs/Releas-                                       B
  verse Clutch Hub .................................................. 279
                                                                       .          es .......................................................................... 312
                                                                                                                                                             .
  High and Low Reverse Clutch .............................. 284       .          Stall Speed ........................................................... 312.
  Direct Clutch ......................................................... 286
                                                                       .          Line Pressure ....................................................... 312  .
                                                                                                                                                                      C
                                                                                  Turbine Revolution Sensor ................................... 312          .
ASSEMBLY ..................................................... 289
                                                            .                     Vehicle Speed Sensor A/T (Revolution Sensor) ... 312                       .
  Assembly (1) ........................................................ 289
                                                                      .           Reverse Brake ...................................................... 312   .
  Adjustment ........................................................... 302
                                                                      .           Total End Play ...................................................... 313  .        TM
  Assembly (2) ........................................................ 304
                                                                      .           Torque Converter ................................................. 313     .
SERVICE DATA AND SPECIFICATIONS
                                                                                                                                                                      E
(SDS) ......................................................... 311
                                                              .

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Revision: November 2008                                                   TM-5                                                                     2009 Titan
                              DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow                                                                                  INFOID:0000000003787152




INTRODUCTION
The TCM receives a signal from the vehicle speed sensor, accelera-
tor pedal position sensor (throttle position sensor) or PNP switch.
Then provides shift control or lock-up control via A/T solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used with the OBD-related parts of the
A/T system for malfunction-diagnostic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the A/T system. The A/T system must be in good oper-
ating condition and be free of valve seizure, solenoid valve malfunc-
                                                                                                     SAT631IB
tion, etc.

It is much more difficult to diagnose an error that occurs intermit-
tently rather than continuously. Most intermittent errors are caused
by poor electric connections or improper wiring. In this case, careful
checking of suspected circuits may help prevent the replacement of
good parts.
A visual check only may not find the cause of the errors. A road test
with CONSULT-III (or GST) or a circuit tester connected should be
performed. Follow the "DETAILED FLOW".


                                                                                                     SAT632I




Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such errors, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A "Diagnostic work sheet" as shown on
the example (Refer to TM-7) should be used.
Start your diagnosis by looking for "conventional" errors first. This will
help troubleshoot driveability errors on an electronically controlled
engine vehicle.
Also check related Service bulletins.
                                                                                                     SEF234G


DETAILED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using diagnosis worksheet. Refer to TM-7, "Diagnostic Work Sheet".

         >> GO TO 2.
2.CHECK SYMPTOM 1
Check the following items based on the information obtained from the customer.



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