2001 Nissan Sentra Service & Repair Manual

AUTOMATIC TRANSAXLE SECTION AT CONTENTS TROUBLE DIAGNOSIS - INDEX ....................................4 Alphabetical & P No. Index for DTC ...........................4 PRECAUTIONS ...............................................................6 Supplemental Restraint System (SRS) ″AIR BAG″ and ″SEAT BELT PRE-TENSIONER″ ...............6 Precautions for On Board Diagnostic (OBD) System of A/T and Engine...........................................6 Precautions ..................................................................6 Service Notice or Precautions .....................................8 Wiring Diagrams and Trouble Diagnosis .....................9 PREPARATION .............................................................10 Special Service Tools ................................................10 Commercial Service Tools .........................................12 OVERALL SYSTEM ......................................................14 A/T Electrical Parts Location .....................................14 Circuit Diagram ..........................................................15 Cross-sectional View - RE4F03B ..............................16 Hydraulic Control Circuit ............................................17 Shift Mechanism ........................................................18 Control System ..........................................................27 Control Mechanism....................................................28 Control Valve .............................................................33 ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION ...............................................................35 Introduction ................................................................35 OBD-II Function for A/T System................................35 One or Two Trip Detection Logic of OBD-II ..............35 OBD-II Diagnostic Trouble Code (DTC) ....................35 Malfunction Indicator Lamp (MIL) ..............................39 CONSULT-II ...............................................................39 TROUBLE DIAGNOSIS - INTRODUCTION..................56 Introduction ................................................................56 Work Flow ..................................................................60 TROUBLE DIAGNOSIS - BASIC INSPECTION ...........62 A/T Fluid Check .........................................................62 Stall Test ....................................................................62 Line Pressure Test .....................................................66 Road Test ...................................................................67 TROUBLE DIAGNOSIS - GENERAL DESCRIPTION ...............................................................86 Symptom Chart ..........................................................86 TROUBLE DIAGNOSIS - GENERAL DESCRIPTION .............................................................103 TCM Terminals and Reference Value......................103 TROUBLE DIAGNOSIS FOR POWER SUPPLY........107 Wiring Diagram - AT - MAIN....................................107 Diagnostic Procedure ..............................................108 DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH ....................................................................... 110 Description ............................................................... 110 Wiring Diagram - AT - PNP/SW............................... 111 Diagnostic Procedure .............................................. 112 Component Inspection ............................................. 114 DTC P0710 A/T FLUID TEMPERATURE SENSOR CIRCUIT ....................................................................... 115 Description ............................................................... 115 Wiring Diagram - AT - FTS ...................................... 117 Diagnostic Procedure .............................................. 118 Component Inspection .............................................120 DTC P0720 VEHICLE SPEED SENSOR.A/T (REVOLUTION SENSOR) ...........................................121 Description ...............................................................121 Wiring Diagram - AT - VSSA/T ................................123 Diagnostic Procedure ..............................................124 DTC P0725 ENGINE SPEED SIGNAL .......................126 Description ...............................................................126 Wiring Diagram - AT - ENGSS ................................127 Diagnostic Procedure ..............................................128 DTC P0731 A/T 1ST GEAR FUNCTION ....................130 Description ...............................................................130 Wiring Diagram - AT - 1ST ......................................133 Diagnostic Procedure ..............................................134 Component Inspection .............................................135 DTC P0732 A/T 2ND GEAR FUNCTION ....................137 Description ...............................................................137 Wiring Diagram - AT - 2ND......................................140 Diagnostic Procedure ..............................................141 GI MA EM LC EC FE CL MT AX SU BR ST RS BT HA SC EL IDX

Component Inspection .............................................142 DTC P0733 A/T 3RD GEAR FUNCTION ....................143 Description ...............................................................143 Wiring Diagram - AT - 3RD......................................146 Diagnostic Procedure ..............................................147 Component Inspection .............................................148 DTC P0734 A/T 4TH GEAR FUNCTION ....................149 Description ...............................................................149 Wiring Diagram - AT - 4TH ......................................152 Diagnostic Procedure ..............................................153 Component Inspection .............................................157 DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE......................................................158 Description ...............................................................158 Wiring Diagram - AT - TCV......................................159 Diagnostic Procedure ..............................................160 Component Inspection .............................................161 DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) ....162 Description ...............................................................162 Wiring Diagram - AT - TCCSIG ...............................165 Diagnostic Procedure ..............................................166 Component Inspection .............................................172 DTC P0745 LINE PRESSURE SOLENOID VALVE ...173 Description ...............................................................173 Wiring Diagram - AT - LPSV....................................174 Diagnostic Procedure ..............................................175 Component Inspection .............................................177 DTC P0750 SHIFT SOLENOID VALVE A ..................178 Description ...............................................................178 Wiring Diagram - AT - SSV/A ..................................179 Diagnostic Procedure ..............................................180 Component Inspection .............................................181 DTC P0755 SHIFT SOLENOID VALVE B ..................182 Description ...............................................................182 Wiring Diagram - AT - SSV/B ..................................183 Diagnostic Procedure ..............................................184 Component Inspection .............................................185 DTC P1705 THROTTLE POSITION SENSOR ...........186 Description ...............................................................186 Wiring Diagram - AT - TPS ......................................188 Diagnostic Procedure ..............................................189 Component Inspection .............................................193 DTC P1760 OVERRUN CLUTCH SOLENOID VALVE..........................................................................194 Description ...............................................................194 Wiring Diagram - AT - OVRCSV..............................195 Diagnostic Procedure ..............................................196 Component Inspection .............................................197 DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE) ....198 Description ...............................................................198 Wiring Diagram - AT - BA/FTS ................................200 Diagnostic Procedure ..............................................201 Component Inspection .............................................204 DTC VHCL SPEED SEN.MTR VEHICLE SPEED SENSOR.MTR..............................................................205 Description ...............................................................205 Wiring Diagram - AT - VSSMTR..............................207 Diagnostic Procedure ..............................................208 DTC CONTROL UNIT (RAM), CONTROL UNIT (ROM) ...........................................................................209 Description ...............................................................209 Diagnostic Procedure ..............................................209 DTC CONTROL UNIT (EEP ROM) ............................. 211 Description ............................................................... 211 Diagnostic Procedure ..............................................212 TROUBLE DIAGNOSES FOR SYMPTOMS ...............213 Wiring Diagram - AT - NONDTC .............................213 1. O/D OFF Indicator Lamp Does Not Come On....216 2. Engine Cannot Be Started In ″P″ and ″N″ Position ....................................................................219 3. In ″P″ Position, Vehicle Moves Forward Or Backward When Pushed .........................................220 4. In ″N″ Position, Vehicle Moves ...........................221 5. Large Shock. ″N″ -> ″R″ Position .......................223 6. Vehicle Does Not Creep Backward In ″R″ Position ....................................................................225 7. Vehicle Does Not Creep Forward In ″D″, ″2″ Or ″1″ Position .........................................................228 8. Vehicle Cannot Be Started From D 1 ...................231 9. A/T Does Not Shift: D 1 -> D 2 Or Does Not Kickdown: D 4 -> D 2 ..................................................234 10. A/T Does Not Shift: D 2 -> D 3 .............................237 11. A/T Does Not Shift: D 3 -> D 4 .............................240 12. A/T Does Not Perform Lock-up .........................243 13. A/T Does Not Hold Lock-up Condition ..............245 14. Lock-up Is Not Released ...................................247 15. Engine Speed Does Not Return To Idle (Light Braking D 4 -> D 3 ).....................................................248 16. Vehicle Does Not Start From D 1 .......................250 17. A/T Does Not Shift: D 4 -> D 3 , When Overdrive Control Switch ″ON″ -> ″OFF″ ...............251 18. A/T Does Not Shift: D 3 -> 2 2 , When Selector Lever ″D″ -> ″2″ Position.........................................252 19. A/T Does Not Shift: 2 2 -> 1 1 , When Selector Lever ″2″ -> ″1″ Position .........................................253 20. Vehicle Does Not Decelerate By Engine Brake........................................................................254 21. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control and Throttle Position Switches Circuit Checks) ........................................................254 A/T SHIFT LOCK SYSTEM.........................................263 Description ...............................................................263 Shift Lock System Electrical Parts Location............263 CONTENTS (Cont’d) AT-2

Wiring Diagram - SHIFT - ........................................264 Diagnostic Procedure ..............................................265 KEY INTERLOCK CABLE ..........................................269 Components.............................................................269 Removal ...................................................................269 Installation ................................................................270 ON-VEHICLE SERVICE ..............................................271 Control Valve Assembly and Accumulators .............271 Control Cable Adjustment ........................................272 Park/Neutral Position (PNP) Switch Adjustment .....272 Differential Side Oil Seal Replacement ...................273 Revolution Sensor Replacement .............................273 REMOVAL AND INSTALLATION ...............................274 Removal ...................................................................274 Installation ................................................................275 OVERHAUL .................................................................277 Components.............................................................277 Oil Channel ..............................................................280 Locations of Adjusting Shims, Needle Bearings, Thrust Washers and Snap Rings ............................281 DISASSEMBLY............................................................282 REPAIR FOR COMPONENT PARTS .........................296 Manual Shaft............................................................296 Oil Pump ..................................................................299 Control Valve Assembly ...........................................303 Control Valve Upper Body .......................................312 Control Valve Lower Body .......................................316 Reverse Clutch ........................................................319 High Clutch ..............................................................323 Forward Clutch and Overrun Clutch........................328 Low & Reverse Brake..............................................335 Rear Internal Gear, Forward Clutch Hub and Overrun Clutch Hub .................................................339 Output Shaft, Idler Gear, Reduction Pinion Gear and Bearing Retainer...............................................343 Band Servo Piston Assembly ..................................348 Final Drive................................................................353 ASSEMBLY..................................................................357 Assembly (1) ............................................................357 Adjustment (1) .........................................................358 Assembly (2) ............................................................363 Adjustment (2) .........................................................367 Assembly (3) ............................................................371 Assembly (4) ............................................................373 SERVICE DATA AND SPECIFICATIONS (SDS) .......378 General Specifications .............................................378 Shift Schedule..........................................................378 Stall Revolution ........................................................379 Line Pressure...........................................................379 Control Valves..........................................................380 Clutch, Brake and Brake Band ................................380 Clutch and Brake Return Springs............................382 Oil Pump ..................................................................382 Input Shaft ...............................................................383 Planetary Carrier......................................................383 Final Drive................................................................383 Reduction Pinion Gear ............................................384 Output Shaft.............................................................386 Bearing Retainer ......................................................386 Total End Play..........................................................387 Reverse Clutch End Play ........................................387 Accumulator .............................................................387 Band Servo ..............................................................387 Removal and Installation .........................................388 Shift Solenoid Valves ...............................................388 Solenoid Vavle .........................................................388 A/T Fluid Temperature Sensor.................................388 Revolution Sensor ...................................................388 Dropping Resistor ....................................................388 GI MA EM LC EC FE CL MT AX SU BR ST RS BT HA SC EL IDX CONTENTS (Cont’d) AT-3

Alphabetical & P No. Index for DTC NIAT0001 ALPHABETICAL INDEX FOR DTC NIAT0001S01 Items (CONSULT-II screen terms) DTC Reference page CONSULT-II GST*1 A/T 1ST GR FNCTN P0731 AT-130 A/T 2ND GR FNCTN P0732 AT-137 A/T 3RD GR FNCTN P0733 AT-143 A/T 4TH GR FNCTN P0734 AT-149 A/T TCC S/V FNCTN P0744 AT-158 ATF TEMP SEN/CIRC P0710 AT-115 ENGINE SPEED SIG P0725 AT-126 L/PRESS SOL/CIRC P0745 AT-173 O/R CLTCH SOL/CIRC P1760 AT-194 PNP SW/CIRC P0705 AT-110 SFT SOL A/CIRC*2 P0750 AT-178 SFT SOL B/CIRC*2 P0755 AT-182 TCC SOLENOID/CIRC P0740 AT-158 TP SEN/CIRC A/T*2 P1705 AT-186 VEH SPD SEN/CIR AT*3 P0720 AT-121 *1: These numbers are prescribed by SAE J2012. *2: When the fail-safe operation occurs, the MIL illuminates. *3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at the same time. TROUBLE DIAGNOSIS — INDEX Alphabetical & P No. Index for DTC AT-4

P NO. INDEX FOR DTC =NIAT0001S02 DTC Items (CONSULT-II screen terms) Reference page CONSULT-II GST*1 P0705 PNP SW/CIRC AT-110 P0710 ATF TEMP SEN/CIRC AT-115 P0720 VEH SPD SEN/CIR AT*3 AT-121 P0725 ENGINE SPEED SIG AT-126 P0731 A/T 1ST GR FNCTN AT-130 P0732 A/T 2ND GR FNCTN AT-137 P0733 A/T 3RD GR FNCTN AT-143 P0734 A/T 4TH GR FNCTN AT-149 P0740 TCC SOLENOID/CIRC AT-158 P0744 A/T TCC S/V FNCTN AT-162 P0745 L/PRESS SOL/CIRC AT-173 P0750 SFT SOL A/CIRC*2 AT-178 P0755 SFT SOL B/CIRC*2 AT-182 P1705 TP SEN/CIRC A/T*2 AT-186 P1760 O/R CLTCH SOL/CIRC AT-194 *1: These numbers are prescribed by SAE J2012. *2: When the fail-safe operation occurs, the MIL illuminates. *3: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at the same time. GI MA EM LC EC FE CL MT AX SU BR ST RS BT HA SC EL IDX TROUBLE DIAGNOSIS — INDEX Alphabetical & P No. Index for DTC (Cont’d) AT-5

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2001 Nissan Sentra Service & Repair Manual

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