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CVT


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TRANSMISSION/TRANSAXLE

                                                                                                                                                                      A




                                                                                      SECTION                     CVT                                 CVT
                                                                                                                                                                      B


                                                                                                                                                                      CVT


                                                                                                                                                                      D


                                                                                                                                                                      E
                                                                   CONTENTS
SERVICE INFORMATION ........................... 5
                                           .                                        ON BOARD DIAGNOSTIC (OBD) SYSTEM .... 24                                          F
                                                                                      Introduction .............................................................24
                                                                                                                                                            .
INDEX FOR DTC ................................................ 5
                                                         .                            OBD-II Function for CVT System ...........................24          .
  Alphabetical Index .................................................... 5
                                                                   .                  One or Two Trip Detection Logic of OBD-II ............24              .         G
  DTC No. Index ......................................................... 5
                                                                   .                  OBD-II Diagnostic Trouble Code (DTC) .................24              .
                                                                                      Malfunction Indicator Lamp (MIL) ...........................25        .
PRECAUTIONS .................................................. 7
                                                         .
  Precaution for Supplemental Restraint System                                      TROUBLE DIAGNOSIS .................................... 27                         H
  (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                             DTC Inspection Priority Chart .................................27      .
  SIONER" .................................................................. 7
                                                                         .            Fail-Safe .................................................................27
                                                                                                                                                             .
  Precaution Necessary for Steering Wheel Rota-                                       How to Perform Trouble Diagnosis for Quick and                                   I
  tion After Battery Disconnect .................................... 7   .            Accurate Repair ......................................................28
                                                                                                                                                             .
  Precaution for On Board Diagnosis (OBD) System                                      CVT Electrical Parts Location .................................33      .
  of CVT and Engine ................................................... 7.            Circuit Diagram .......................................................34
                                                                                                                                                             .         J
  Service After Replacing TCM and Transaxle As-                                       Inspections before Trouble Diagnosis ....................35            .
  sembly ...................................................................... 8
                                                                         .            Road Test ...............................................................38
                                                                                                                                                             .
  Removal and Installation Procedure for CVT Unit                                     Check before Engine Is Started ..............................39        .
  Connector ................................................................. 9
                                                                         .            Check at Idle ...........................................................39
                                                                                                                                                             .        K
  Precaution .............................................................. 10
                                                                         .            Cruise Test .............................................................41
                                                                                                                                                             .
  Service Notice or Precaution .................................. 12     .            Vehicle Speed When Shifting Gears ......................43             .
  ATFTEMP COUNT Conversion Table ................... 12                  .            TCM Input/Output Signal Reference Value ............44                 .        L
                                                                                      CONSULT-III Function (TRANSMISSION) .............46                    .
PREPARATION .................................................13
                                                         .                            Diagnosis Procedure without CONSULT-III ...........53                  .
  Special Service Tool .............................................. 13
                                                                 .
  Commercial Service Tool ....................................... 13
                                                                 .                                                                                                    M
                                                                                    DTC U1000 CAN COMMUNICATION LINE ..... 54
                                                                                      Description ..............................................................54
                                                                                                                                                            .
CVT FLUID ........................................................14
                                                              .                       On Board Diagnosis Logic ......................................54     .
  Checking CVT Fluid ............................................... 14
                                                                .                                                                                                     N
                                                                                      Possible Cause .......................................................54
                                                                                                                                                            .
  Changing CVT Fluid ............................................... 15
                                                                .
                                                                                      DTC Confirmation Procedure .................................54        .
CVT SYSTEM ....................................................16
                                                           .                          Wiring Diagram - CVT - CAN ..................................55       .
  Cross-Sectional View - RE0F10A .......................... 16         .              Diagnosis Procedure ..............................................56  .         O
  Control System ....................................................... 17
                                                                       .            DTC U1010 TRANSMISSION CONTROL
  Hydraulic Control System ....................................... 18  .
                                                                                    MODULE (CAN) ................................................ 57
  TCM Function ......................................................... 18
                                                                       .                                                                                              P
                                                                                      Description ..............................................................57
                                                                                                                                                            .
  CAN Communication .............................................. 19  .
                                                                                      On Board Diagnosis Logic ......................................57     .
  Input/Output Signal of TCM .................................... 19   .
                                                                                      Possible Cause .......................................................57
                                                                                                                                                            .
  Line Pressure and Secondary Pressure Control .... 20
                                                                                      DTC Confirmation Procedure .................................57        .
  Shift Control ........................................................... 20
                                                                       .
                                                                                      Diagnosis Procedure ..............................................57  .
  Lock-up and Select Control .................................... 22   .
  Control Valve .......................................................... 23
                                                                       .            DTC P0703 STOP LAMP SWITCH CIRCUIT ... 58


Revision: July 2007                                                          CVT-1                                                                2008 Sentra
  Description ............................................................. 58
                                                                        .          On Board Diagnosis Logic ..................................... 82 .
  CONSULT-III Reference Value ............................. 58          .          Possible Cause ...................................................... 82
                                                                                                                                                     .
  On Board Diagnosis Logic ..................................... 58     .          DTC Confirmation Procedure ................................. 82   .
  Possible Cause ...................................................... 58
                                                                        .          Diagnosis Procedure .............................................. 82
                                                                                                                                                     .
  DTC Confirmation Procedure ................................ 58        .
  Diagnosis Procedure ............................................. 58  .        DTC P0740 TORQUE CONVERTER CLUTCH
                                                                                 SOLENOID VALVE .......................................... 83
                                                                                                                                       .
DTC P0705 PARK/NEUTRAL POSITION                                                    Description ............................................................. 83
                                                                                                                                                         .
SWITCH ............................................................ 60
                                                                .                  CONSULT-III Reference Value .............................. 83         .
  Description ............................................................. 60
                                                                        .          On Board Diagnosis Logic ..................................... 83     .
  CONSULT-III Reference Value ............................. 60          .          Possible Cause ...................................................... 83
                                                                                                                                                         .
  On Board Diagnosis Logic ..................................... 60     .          DTC Confirmation Procedure ................................. 83       .
  Possible Cause ...................................................... 60
                                                                        .          Wiring Diagram - CVT - TCV ................................. 84       .
  DTC Confirmation Procedure ................................ 60        .          Diagnosis Procedure .............................................. 85 .
  Wiring Diagram - CVT - PNP/SW .......................... 61           .          Component Inspection ........................................... 86   .
  Diagnosis Procedure ............................................. 62  .
  Component Inspection ........................................... 63   .        DTC P0744 A/T TCC S/V FUNCTION (LOCK-
                                                                                 UP) .................................................................... 88
                                                                                                                                                      .
DTC P0710 CVT FLUID TEMPERATURE                                                    Description ............................................................. 88
                                                                                                                                                         .
SENSOR CIRCUIT ............................................ 65
                                                        .                          CONSULT-III Reference Value .............................. 88         .
  Description ............................................................. 65
                                                                        .          On Board Diagnosis Logic ..................................... 88     .
  CONSULT-III Reference Value ............................. 65          .          Possible Cause ...................................................... 88
                                                                                                                                                         .
  On Board Diagnosis Logic ..................................... 65     .          DTC Confirmation Procedure ................................. 88       .
  Possible Cause ...................................................... 65
                                                                        .          Diagnosis Procedure .............................................. 88 .
  DTC Confirmation Procedure ................................ 65        .
  Wiring Diagram - CVT - FTS .................................. 66      .        DTC P0745 LINE PRESSURE SOLENOID
  Diagnosis Procedure ............................................. 67  .        VALVE .............................................................. 90
                                                                                                                                                  .
  Component Inspection ........................................... 68   .          Description ............................................................. 90
                                                                                                                                                         .
                                                                                   CONSULT-III Reference Value .............................. 90         .
DTC P0715 INPUT SPEED SENSOR CIR-                                                  On Board Diagnosis Logic ..................................... 90     .
CUIT (PRI SPEED SENSOR) ........................... 70
                                                .                                  Possible Cause ...................................................... 90
                                                                                                                                                         .
  Description ............................................................. 70
                                                                        .          DTC Confirmation Procedure ................................. 90       .
  CONSULT-III Reference Value ............................. 70          .          Wiring Diagram - CVT - LPSV ............................... 91        .
  On Board Diagnosis Logic ..................................... 70     .          Diagnosis Procedure .............................................. 92 .
  Possible Cause ...................................................... 70
                                                                        .          Component Inspection ........................................... 93   .
  DTC Confirmation Procedure ................................ 70        .
  Wiring Diagram - CVT - PRSCVT .......................... 71           .        DTC P0746 PRESSURE CONTROL SOLE-
  Diagnosis Procedure ............................................. 72  .        NOID A PERFORMANCE (LINE PRESSURE
                                                                                 SOLENOID VALVE) ......................................... 95
                                                                                                                                       .
DTC P0720 VEHICLE SPEED SENSOR CVT                                                 Description ............................................................. 95
                                                                                                                                                         .
(SECONDARY SPEED SENSOR) .................... 75
                                          .                                        CONSULT-III Reference Value .............................. 95         .
  Description ............................................................. 75
                                                                        .          On Board Diagnosis Logic ..................................... 95     .
  CONSULT-III Reference Value ............................. 75          .          Possible Cause ...................................................... 95
                                                                                                                                                         .
  On Board Diagnosis Logic ..................................... 75     .          DTC Confirmation Procedure ................................. 95       .
  Possible Cause ...................................................... 75
                                                                        .          Diagnosis Procedure .............................................. 95 .
  DTC Confirmation Procedure ................................ 75        .
  Wiring Diagram - CVT - SESCVT .......................... 76           .        DTC P0776 PRESSURE CONTROL SOLE-
  Diagnosis Procedure ............................................. 77  .        NOID B PERFORMANCE (SEC PRESSURE
                                                                                 SOLENOID VALVE) ......................................... 97
                                                                                                                                       .
DTC P0725 ENGINE SPEED SIGNAL ............. 80
                                        .                                          Description ............................................................. 97
                                                                                                                                                         .
  Description ............................................................. 80
                                                                        .          CONSULT-III Reference Value .............................. 97         .
  CONSULT-III Reference Value ............................. 80          .          On Board Diagnosis Logic ..................................... 97     .
  On Board Diagnosis Logic ..................................... 80     .          Possible Cause ...................................................... 97
                                                                                                                                                         .
  Possible Cause ...................................................... 80
                                                                        .          DTC Confirmation Procedure ................................. 97       .
  DTC Confirmation Procedure ................................ 80        .          Diagnosis Procedure .............................................. 97 .
  Diagnosis Procedure ............................................. 80  .
                                                                                 DTC P0778 PRESSURE CONTROL SOLE-
DTC P0730 BELT DAMAGE ............................ 82
                                               .                                 NOID B ELECTRICAL (SEC PRESSURE SO-
  Description ............................................................. 82
                                                                        .        LENOID VALVE) .............................................. 99
                                                                                                                                          .
  CONSULT-III Reference Value ............................. 82          .

Revision: July 2007                                                       CVT-2                                                                2008 Sentra
  Description ............................................................. 99
                                                                       .            Diagnosis Procedure ............................................ 119
                                                                                                                                                  .
  CONSULT-III Reference Value .............................. 99        .                                                                                           A
  On Board Diagnosis Logic ..................................... 99    .          DTC P1701 TRANSMISSION CONTROL
  Possible Cause ...................................................... 99
                                                                       .          MODULE (POWER SUPPLY) ......................... 121
  DTC Confirmation Procedure ................................. 99      .            Description ............................................................ 121
                                                                                                                                                          .
                                                                                                                                                                   B
  Wiring Diagram - CVT - SECPSV ........................ 100           .            On Board Diagnosis Logic .................................... 121     .
  Diagnosis Procedure ............................................ 101 .            Possible Cause ..................................................... 121
                                                                                                                                                          .
  Component Inspection ......................................... 102   .            DTC Confirmation Procedure ............................... 121        .
                                                                                    Wiring Diagram - CVT - POWER .......................... 122           .        CVT
DTC P0826 MANUAL MODE SWITCH CIR-                                                   Diagnosis Procedure ............................................ 123  .
CUIT ................................................................. 104
                                                                    .
  Description ........................................................... 104
                                                                         .        DTC P1705 THROTTLE POSITION SENSOR. 125                                          D
  CONSULT-III Reference Value in Data Monitor                                       Description ............................................................ 125
                                                                                                                                                          .
  Mode .................................................................... 104
                                                                         .          CONSULT-III Reference Value ............................ 125          .
  On Board Diagnosis Logic ................................... 104       .          On Board Diagnosis Logic .................................... 125     .
                                                                                    Possible Cause ..................................................... 125
                                                                                                                                                          .        E
  Possible Cause .................................................... 104.
  DTC Confirmation Procedure ............................... 104         .          DTC Confirmation Procedure ............................... 125        .
  Wiring Diagram - CVT - MMSW ........................... 105            .          Diagnosis Procedure ............................................ 125  .
  Diagnosis Procedure ............................................ 106   .                                                                                         F
                                                                                  DTC P1722 ESTM VEHICLE SPEED SIGNAL. 127
  Component Inspection ......................................... 108     .
                                                                                    Description ............................................................ 127
                                                                                                                                                          .
DTC P0840 TRANSMISSION FLUID PRES-                                                  CONSULT-III Reference Value ............................ 127          .
                                                                                    On Board Diagnosis Logic .................................... 127     .        G
SURE SENSOR A CIRCUIT (SEC PRES-
SURE SENSOR) .............................................. 109
                                                         .                          Possible Cause ..................................................... 127
                                                                                                                                                          .
  Description ........................................................... 109
                                                                       .            DTC Confirmation Procedure ............................... 127        .
                                                                                    Diagnosis Procedure ............................................ 127  .        H
  CONSULT-III Reference Value ............................ 109         .
  On Board Diagnosis Logic ................................... 109     .          DTC P1723 CVT SPEED SENSOR FUNC-
  Possible Cause .................................................... 109
                                                                       .          TION ................................................................ 129
  DTC Confirmation Procedure ............................... 109       .                                                                                            I
                                                                                    Description ............................................................ 129
                                                                                                                                                          .
  Wiring Diagram - CVT - SECPS ........................... 110         .
                                                                                    On Board Diagnosis Logic .................................... 129     .
  Diagnosis Procedure ............................................ 111 .
                                                                                    Possible Cause ..................................................... 129
                                                                                                                                                          .
                                                                                    DTC Confirmation Procedure ............................... 129        .         J
DTC P0841 PRESSURE SENSOR FUNC-
TION ................................................................ 113
                                                                   .                Diagnosis Procedure ............................................ 129  .
  Description ........................................................... 113
                                                                       .          DTC P1726 ELECTRIC THROTTLE CON-                                                 K
  CONSULT-III Reference Value ............................ 113         .          TROL SYSTEM ............................................... 131
  On Board Diagnosis Logic ................................... 113     .            Description ............................................................ 131
                                                                                                                                                          .
  Possible Cause .................................................... 113
                                                                       .
                                                                                    On Board Diagnosis Logic .................................... 131     .        L
  DTC Confirmation Procedure ............................... 113       .
                                                                                    Possible Cause ..................................................... 131
                                                                                                                                                          .
  Diagnosis Procedure ............................................ 113 .            DTC Confirmation Procedure ............................... 131        .
DTC P0845 TRANSMISSION FLUID PRES-                                                  Diagnosis Procedure ............................................ 131  .
                                                                                                                                                                   M
SURE SENSOR B CIRCUIT (PRI PRESSURE                                               DTC P1740 LOCK-UP SELECT SOLENOID
SENSOR) ......................................................... 115
                                                               .                  VALVE CIRCUIT ............................................. 132
  Description ........................................................... 115
                                                                       .            Description ............................................................ 132
                                                                                                                                                          .
  CONSULT-III Reference Value ............................ 115         .                                                                                           N
                                                                                    CONSULT-III Reference Value ............................ 132          .
  On Board Diagnosis Logic ................................... 115     .            On Board Diagnosis Logic .................................... 132     .
  Possible Cause .................................................... 115
                                                                       .            Possible Cause ..................................................... 132
                                                                                                                                                          .
  DTC Confirmation Procedure ............................... 115       .                                                                                           O
                                                                                    DTC Confirmation Procedure ............................... 132        .
  Wiring Diagram - CVT - PRIPS ............................ 116        .            Wiring Diagram - CVT - L/USSV .......................... 133          .
  Diagnosis Procedure ............................................ 117 .            Diagnosis Procedure ............................................ 134  .
                                                                                    Component Inspection .......................................... 135   .        P
DTC P0868 SECONDARY PRESSURE
DOWN .............................................................. 119
                                                                 .                DTC P1745 LINE PRESSURE CONTROL ..... 137
  Description ........................................................... 119
                                                                       .            Description ............................................................ 137
                                                                                                                                                          .
  CONSULT-III Reference Value ............................ 119         .            On Board Diagnosis Logic .................................... 137     .
  On Board Diagnosis Logic ................................... 119     .            Possible Cause ..................................................... 137
                                                                                                                                                          .
  Possible Cause .................................................... 119
                                                                       .            DTC Confirmation Procedure ............................... 137        .
  DTC Confirmation Procedure ............................... 119       .            Diagnosis Procedure ............................................ 137  .

Revision: July 2007                                                        CVT-3                                                                2008 Sentra
DTC P1777 STEP MOTOR - CIRCUIT ........... 138
                                         .                                         CVT SHIFT LOCK SYSTEM ............................ 167
                                                                                                                                   .
 Description ............................................................138
                                                                       .             Description ........................................................... 167
                                                                                                                                                           .
 CONSULT-III Reference Value ............................138           .             Shift Lock System Electrical Parts Location ......... 167             .
 On Board Diagnosis Logic ....................................138      .             Wiring Diagram - CVT - SHIFT ............................ 168         .
 Possible Cause .....................................................138
                                                                       .             Diagnosis Procedure ............................................ 168  .
 DTC Confirmation Procedure ...............................138         .
 Wiring Diagram - CVT - STM ................................139        .           SHIFT CONTROL SYSTEM ............................ 171
                                                                                                                                  .
 Diagnosis Procedure ............................................140   .             Removal and Installation ...................................... 171
                                                                                                                                                   .
 Component Inspection ..........................................141    .             Selector Lever Knob Removal and Installation .... 172         .
                                                                                     Adjustment of CVT Position ................................. 173
                                                                                                                                                   .
DTC P1778 STEP MOTOR - FUNCTION ....... 142
                                      .                                              Checking of CVT Position .................................... 173
                                                                                                                                                   .
 Description ............................................................142
                                                                       .             Adjustment of PNP switch .................................... 174
                                                                                                                                                   .
 CONSULT-III Reference Value ............................142           .
 On Board Diagnosis Logic ....................................142      .           KEY INTERLOCK CABLE .............................. 175
                                                                                                                                   .
 Possible Cause .....................................................142
                                                                       .             Removal and Installation ...................................... 175
                                                                                                                                                   .
 DTC Confirmation Procedure ...............................142         .
                                                                                   ON-VEHICLE SERVICE .................................. 178
                                                                                                                                      .
 Diagnosis Procedure ............................................143   .
                                                                                     Oil Pan ................................................................. 178
                                                                                                                                                             .
OVERDRIVE CONTROL SWITCH ................. 144
                                         .                                           Park/Neutral Position (PNP) Switch ..................... 178            .
 Description ............................................................144
                                                                       .             Primary Speed Sensor ......................................... 179      .
 CONSULT-III Reference Value ............................144           .             Secondary Speed Sensor .................................... 180         .
 Wiring Diagram - CVT - ODSW ............................145           .             Differential Side Oil Seal ...................................... 180   .
 Diagnosis Procedure ............................................146   .             Oil Pump Fitting Bolt ............................................ 181  .
 Component Inspection ..........................................147    .
                                                                                   AIR BREATHER HOSE ................................... 183
                                                                                                                                      .
SHIFT POSITION INDICATOR CIRCUIT ....... 149
                                       .                                             Removal and Installation (MR20DE) .................... 183
                                                                                                                                          .
 Description ............................................................149
                                                                       .             Removal and Installation (QR25DE) .................... 184
                                                                                                                                          .
 CONSULT-III Reference Value ............................149           .
                                                                                   CVT FLUID COOLER SYSTEM ...................... 185
                                                                                                                               .
 Diagnosis Procedure ............................................149   .
                                                                                     CVT Fluid Cooler Removal and Installa-
TROUBLE DIAGNOSIS FOR SYMPTOMS .... 150
                                  .                                                  tion(MR20DE) ...................................................... 185
                                                                                                                                                         .
 Wiring Diagram - CVT - NONDTC ........................150                 .         CVT Fluid Cooler Removal and Installation
 O/D OFF Indicator Lamp Does Not Come On ......153                         .         (QR25DE) ............................................................ 185
                                                                                                                                                         .
 Engine Cannot Be Started in "P" or "N" Position ..155
                                                                                   TRANSAXLE ASSEMBLY .............................. 187
                                                                                                                                  .
 In "P" Position, Vehicle Moves Forward or Back-
                                                                                     Removal and Installation (MR20DE) .................... 187
                                                                                                                                          .
 ward When Pushed ..............................................155        .
                                                                                     Removal and Installation (QR25DE) .................... 189
                                                                                                                                          .
 In "N" Position, Vehicle Moves .............................156           .
 Large Shock "N"  "R" Position ...........................156              .       REPAIR FOR COMPONENT PARTS ............. 192
                                                                                                                         .
 Vehicle Does Not Creep Backward in "R" Position..157                                Torque Converter and Converter Housing Oil Seal
 Vehicle Does Not Creep Forward in "D" or "L" Po-                                                                                  . 192
 sition .....................................................................158
                                                                           .
 Vehicle Speed Does Not Change in "L" Position ..159                               SERVICE DATA AND SPECIFICATIONS
 Vehicle Speed Does Not Change in overdrive-off                                    (SDS) ............................................................... 193
                                                                                                                                                      .
 mode .....................................................................160
                                                                           .         General Specification ........................................... 193 .
 Vehicle Speed Does Not Change in "D" Position ..161                                 Vehicle Speed When Shifting Gears .................... 193            .
 Cannot Be Changed to Manual Mode ..................161                    .         Stall Speed ........................................................... 193
                                                                                                                                                           .
 CVT Does Not Shift in Manual Mode ....................162                 .         Line Pressure ....................................................... 194
                                                                                                                                                           .
 Vehicle Does Not Decelerate by Engine Brake ....163                       .         Solenoid Valves ................................................... 194
                                                                                                                                                           .
                                                                                     CVT Fluid Temperature Sensor ........................... 194          .
TRANSMISSION CONTROL MODULE ......... 165
                                    .                                                Primary Speed Sensor ......................................... 194    .
 Removal and Installation ......................................165
                                                              .                      Secondary Speed Sensor .................................... 194       .
                                                                                     Removal and Installation ...................................... 194   .




Revision: July 2007                                                         CVT-4                                                                 2008 Sentra
                                             INDEX FOR DTC
< SERVICE INFORMATION >
SERVICE INFORMATION                                                                                                A
INDEX FOR DTC
Alphabetical Index                                                                       INFOID:0000000001850929
                                                                                                                   B
NOTE:
If DTC "U1000 CAN COMM CIRCUIT" is displayed with other DTCs, first perform the trouble diagnosis
for "DTC U1000 CAN COMMUNICATION LINE". Refer to CVT-54.                                          CVT

                                                                  DTC
                        Items                            OBD-II         Except OBD-II                              D
                                                                                        Reference page
                (CONSULT-III screen terms)          CONSULT-III      CONSULT-III only
                                                         GST*1      "TRANSMISSION"
                                                                                                                   E
 A/T TCC S/V FNCTN                                       P0744             P0744            CVT-88
 ATF TEMP SEN/CIRC                                       P0710             P0710            CVT-65
 BELT DAMG                                                 --              P0730            CVT-82                 F
 BRAKE SW/CIRC                                             --              P0703            CVT-58
 CAN COMM CIRCUIT                                        U1000             U1000            CVT-54
 TRANSMISSION CONTROL UNIT (CAN)                         U1010             U1010            CVT-57                 G
 CVT SPD SEN/FNCTN                                         --              P1723           CVT-129
 ENGINE SPEED SIG                                          --              P0725            CVT-80                 H
 ELEC TH CONTROL                                           --              P1726           CVT-131

 ESTM VEH SPD SIG*2                                        --              P1722           CVT-127
 INPUT SPD SEN/CIRC                                      P0715             P0715            CVT-70
                                                                                                                   I

 L/PRESS CONTROL                                           --              P1745           CVT-137
 L/PRESS SOL/CIRC                                        P0745             P0745            CVT-90                 J
 LU-SLCT SOL/CIRC                                        P1740             P1740           CVT-132
 MANUAL MODE SWITCH                                        --              P0826           CVT-104
 PNP SW/CIRC                                             P0705             P0705            CVT-60                 K
 PRESS SEN/FNCTN                                           --              P0841           CVT-113
 PRS CNT SOL/A FCTN                                      P0746             P0746            CVT-95
                                                                                                                   L
 PRS CNT SOL/B CIRC                                      P0778             P0778            CVT-99
 PRS CNT SOL/B FCTN                                      P0776             P0776            CVT-97
 SEC/PRESS DOWN                                            --              P0868           CVT-119                 M
 STEP MOTR CIRC                                          P1777             P1777           CVT-138
 STEP MOTR/FNC                                           P1778             P1778           CVT-142
                                                                                                                   N
 TCC SOLENOID/CIRC                                       P0740             P0740            CVT-83
 TCM-POWER SUPPLY                                          --              P1701           CVT-121
 TP SEN/CIRC A/T                                           --              P1705           CVT-125                 O
 TR PRS SENS/A CIRC                                      P0840             P0840           CVT-109
 TR PRS SENS/B CIRC                                      P0845             P0845           CVT-115
                                                                                                                   P
 VEH SPD SEN/CIR AT                                      P0720             P0720            CVT-75
*1: These numbers are prescribed by SAE J2012.
*2: Models without ABS does not indicate.
DTC No. Index                                                                            INFOID:0000000001850930



NOTE:


Revision: July 2007                              CVT-5                                       2008 Sentra
                                                   INDEX FOR DTC
< SERVICE INFORMATION >
If DTC "U1000 CAN COMM CIRCUIT" is displayed with other DTCs, first perform the trouble diagnosis
for "DTC U1000 CAN COMMUNICATION LINE". Refer to CVT-54 .

                      DTC
       OBD-II                Except OBD-II                            Items
                                                                                           Reference page
    CONSULT-III                                               (CONSULT-III screen terms)
                             CONSULT-III only
       GST*1                "TRANSMISSION"
         --                      P0703          BRAKE SW/CIRC                                 CVT-58
       P0705                     P0705          PNP SW/CIRC                                   CVT-60
       P0710                     P0710          ATF TEMP SEN/CIRC                             CVT-65
       P0715                     P0715          INPUT SPD SEN/CIRC                            CVT-70
       P0720                     P0720          VEH SPD SEN/CIR AT                            CVT-75
         --                      P0725          ENGINE SPEED SIG                              CVT-80
         --                      P0730          BELT DAMG                                     CVT-82
       P0740                     P0740          TCC SOLENOID/CIRC                             CVT-83
       P0744                     P0744          A/T TCC S/V FNCTN                             CVT-88
       P0745                     P0745          L/PRESS SOL/CIRC                              CVT-90
       P0746                     P0746          PRS CNT SOL/A FCTN                            CVT-95
       P0776                     P0776          PRS CNT SOL/B FCTN                            CVT-97
       P0778                     P0778          PRS CNT SOL/B CIRC                            CVT-99
         --                      P0826          MANUAL MODE SWITCH                            CVT-104
       P0840                     P0840          TR PRS SENS/A CIRC                            CVT-109
         --                      P0841          PRESS SEN/FNCTN                               CVT-113
       P0845                     P0845          TR PRS SENS/B CIRC                            CVT-115
         --                      P0868          SEC/PRESS DOWN                                CVT-119
         --                      P1701          TCM-POWER SUPPLY                              CVT-121
         --                      P1705          TP SEN/CIRC A/T                               CVT-125
         --                      P1722                              2                         CVT-127
                                                ESTM VEH SPD SIG*
         --                      P1723          CVT SPD SEN/FNCTN                             CVT-129
         --                      P1726          ELEC TH CONTROL                               CVT-131
       P1740                     P1740          LU-SLCT SOL/CIRC                              CVT-132
         --                      P1745          L/PRESS CONTROL                               CVT-137
       P1777                     P1777          STEP MOTR CIRC                                CVT-138
       P1778                     P1778          STEP MOTR/FNC                                 CVT-142
       U1000                     U1000          CAN COMM CIRCUIT                              CVT-54
       U1010                     U1010          TRANSMISSION CONTROL UNIT (CAN)               CVT-57
*1: These numbers are prescribed by SAE J2012.
*2: Models without ABS does not indicate.




Revision: July 2007                                       CVT-6                                2008 Sentra
                                             PRECAUTIONS
< SERVICE INFORMATION >
PRECAUTIONS
                                                                                                                             A
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"                                                                                     INFOID:0000000001850931

                                                                                                                             B
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS CVT
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.                                                                                                                 D
WARNING:



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