Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Sentra 2006-2009 Approved Nissan Sentra 2007 CVT
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C TRANSMISSION/TRANSAXLE
A
SECTION CVT CVT
B
CVT
D
E
CONTENTS
INDEX FOR DTC ....................................................... 6. CONTROL SYSTEM OUTLINE ......................... 20 . F
Alphabetical Index ................................................... 6
. CONTROL SYSTEM DIAGRAM ........................ 20 .
DTC No. Index ........................................................ 7
. CAN Communication ............................................. 21 .
PRECAUTIONS ......................................................... 8. SYSTEM DESCRIPTION ................................... 21 . G
Precautions for Supplemental Restraint System Input/Output Signal of TCM ................................... 21 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Line Pressure and Secondary Pressure Control ... 22
SIONER" ................................................................. 8
. NORMAL CONTROL ......................................... 22 .
H
Precautions Necessary for Steering Wheel Rotation FEEDBACK CONTROL ..................................... 22 .
After Battery Disconnect ......................................... 8 . Shift Control ........................................................... 22
.
OPERATION PROCEDURE ................................ 8 . "D" POSITION .................................................... 23 .
Precautions for On Board Diagnostic (OBD) System "D" POSITION OVERDRIVE SWITCH: ON ........ 23 . I
of CVT and Engine .................................................. 9
. "L" POSITION ..................................................... 23 .
Service After Replacing TCM and Transaxle DOWNHILL ENGINE BRAKE CONTROL (AUTO
Assembly ................................................................. 9
. ENGINE BRAKE CONTROL) ............................. 23 . J
SERVICE AFTER REPLACING TCM AND ACCELERATION CONTROL ............................. 23 .
TRANSAXLE ASSEMBLY .................................... 9 . Lock-up and Select Control ................................... 24 .
PATTERN A ......................................................... 9
. TORQUE CONVERTER CLUTCH AND SELECT
K
PATTERN B ......................................................... 9
. CONTROL VALVE CONTROL ........................... 24 .
PATTERN C ....................................................... 10
. Control Valve ......................................................... 25
.
Removal and Installation Procedure for CVT Unit FUNCTION OF CONTROL VALVE .................... 25 .
Connector ...............................................................11
. ON BOARD DIAGNOSTIC (OBD) SYSTEM ........... 26 . L
REMOVAL ...........................................................11
. Introduction ............................................................ 26
.
INSTALLATION ...................................................11 . OBD-II Function for CVT System .......................... 26 .
Precautions ........................................................... 12
. One or Two Trip Detection Logic of OBD-II ........... 26 . M
TORQUE CONVERTER SERVICE .................... 13 . ONE TRIP DETECTION LOGIC ........................ 26 .
Service Notice or Precautions ............................... 13 . TWO TRIP DETECTION LOGIC ........................ 26 .
OBD-II SELF-DIAGNOSIS ................................. 13 . OBD-II Diagnostic Trouble Code (DTC) ................ 26 .
PREPARATION ........................................................ 14. HOW TO READ DTC AND 1ST TRIP DTC ........ 26 .
Special Service Tools ............................................ 14. HOW TO ERASE DTC ....................................... 27 .
Commercial Service Tools ..................................... 14 . HOW TO ERASE DTC (WITH CONSULT-III) ..... 27 .
CVT FLUID .............................................................. 15
. HOW TO ERASE DTC (WITH GST) .................. 27 .
Checking CVT Fluid .............................................. 15 . Malfunction Indicator Lamp (MIL) .......................... 28 .
FLUID LEVEL CHECK ....................................... 15 . DESCRIPTION ................................................... 28 .
FLUID CONDITION CHECK .............................. 16 . TROUBLE DIAGNOSIS ........................................... 29 .
Changing CVT Fluid .............................................. 16 . DTC Inspection Priority Chart ................................ 29 .
CVT SYSTEM .......................................................... 17
. Fail-safe ................................................................. 29
.
Cross-sectional View - RE0F10A .......................... 17 . FAIL-SAFE FUNCTION ...................................... 29 .
Control System ...................................................... 18
. How to Perform Trouble Diagnosis for Quick and
Hydraulic Control System ...................................... 19 . Accurate Repair ..................................................... 30.
TCM Function ........................................................ 20
. INTRODUCTION ................................................ 30 .
Revision: December 2006 CVT-1 2007 Sentra
WORK FLOW ..................................................... 31 . On Board Diagnosis Logic .....................................66 .
DIAGNOSTIC WORKSHEET ............................. 32 . Possible Cause ......................................................66.
CVT Electrical Parts Location ................................ 35 . DTC Confirmation Procedure .................................66 .
Circuit Diagram ...................................................... 37. WITH CONSULT-III .............................................66 .
Inspections before Trouble Diagnosis ................... 38 . WITH GST ..........................................................67.
CVT FLUID CHECK ........................................... 38 . Wiring Diagram -- CVT -- PNP/SW ......................68 .
STALL TEST ....................................................... 38 . TCM TERMINALS AND REFERENCE VALUES...69
LINE PRESSURE TEST ..................................... 40 . Diagnostic Procedure .............................................69 .
Road Test .............................................................. 41
. Component Inspection ...........................................71 .
DESCRIPTION ................................................... 41 . PNP SWITCH .....................................................71 .
CONSULT-III OPERATION PROCEDURE ......... 42 . DTC P0710 CVT FLUID TEMPERATURE SENSOR
Check before Engine Is Started ............................. 42 . CIRCUIT ...................................................................72
.
Check at Idle .......................................................... 43
. Description .............................................................72
.
Cruise Test ............................................................. 44
. CONSULT-III Reference Value ...............................72 .
Vehicle Speed When Shifting Gears ..................... 48 . On Board Diagnosis Logic .....................................72 .
TCM Input/Output Signal Reference Values .......... 49 . Possible Cause ......................................................72.
TCM HARNESS CONNECTOR TERMINAL LAY- DTC Confirmation Procedure .................................72 .
OUT .................................................................... 49
. WITH CONSULT-III .............................................72 .
TERMINALS AND REFERENCE VALUES FOR WITH GST ..........................................................72.
TCM .................................................................... 49
. Wiring Diagram -- CVT -- FTS .............................73 .
CONSULT-III Function (TRANSMISSION) ............ 52 . TCM TERMINALS AND REFERENCE VALUES...74
FUNCTION ......................................................... 52 . Diagnostic Procedure .............................................74 .
CONSULT-III REFERENCE VALUE ................... 52 . Component Inspection ...........................................76 .
WORK SUPPORT MODE .................................. 54 . CVT FLUID TEMPERATURE SENSOR .............76 .
SELF-DIAGNOSTIC RESULT MODE ................ 54 . DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI
DATA MONITOR MODE ..................................... 57 . SPEED SENSOR) ....................................................77 .
Diagnostic Procedure without CONSULT-III .......... 59 . Description .............................................................77
.
OBD-II SELF-DIAGNOSTIC PROCEDURE CONSULT-III Reference Value ...............................77 .
(WITH GST) ........................................................ 59 . On Board Diagnosis Logic .....................................77 .
DTC U1000 CAN COMMUNICATION LINE ............. 60 . Possible Cause ......................................................77.
Description ............................................................. 60
. DTC Confirmation Procedure .................................77 .
On Board Diagnosis Logic ..................................... 60 . WITH CONSULT-III .............................................77 .
Possible Cause ...................................................... 60 . WITH GST ..........................................................77.
DTC Confirmation Procedure ................................ 60 . Wiring Diagram -- CVT -- PRSCVT .....................78 .
WITH CONSULT-III ............................................ 60 . TCM TERMINALS AND REFERENCE VALUES...79
WITH GST .......................................................... 60 . Diagnostic Procedure .............................................79 .
Wiring Diagram -- CVT -- CAN ............................ 61 . DTC P0720 VEHICLE SPEED SENSOR CVT (SEC-
TCM TERMINALS AND REFERENCE VALUES 62 ... ONDARY SPEED SENSOR) ....................................83 .
Diagnostic Procedure ............................................ 62 . Description .............................................................83
.
DTC U1010 TRANSMISSION CONTROL MODULE CONSULT-III Reference Value ...............................83 .
(CAN) ........................................................................ 63
. On Board Diagnosis Logic .....................................83 .
Description ............................................................. 63
. Possible Cause ......................................................83.
On Board Diagnosis Logic ..................................... 63 . DTC Confirmation Procedure .................................83 .
Possible Cause ...................................................... 63 . WITH CONSULT-III .............................................83 .
DTC Confirmation Procedure ................................ 63 . WITH GST ..........................................................83.
WITH CONSULT-III ............................................ 63 . Wiring Diagram -- CVT -- SESCVT .....................84 .
WITH GST .......................................................... 63 . TCM TERMINALS AND REFERENCE VALUES...85
Diagnostic Procedure ............................................ 63 . Diagnostic Procedure .............................................85 .
DTC P0703 STOP LAMP SWITCH CIRCUIT .......... 64 . DTC P0725 ENGINE SPEED SIGNAL .....................89 .
Description ............................................................. 64
. Description .............................................................89
.
CONSULT-III Reference Value .............................. 64 . CONSULT-III Reference Value ...............................89 .
On Board Diagnosis Logic ..................................... 64 . On Board Diagnosis Logic .....................................89 .
Possible Cause ...................................................... 64 . Possible Cause ......................................................89.
DTC Confirmation Procedure ................................ 64 . DTC Confirmation Procedure .................................89 .
WITH CONSULT-III ............................................ 64 . WITH CONSULT-III .............................................89 .
Diagnostic Procedure ............................................ 65 . Diagnostic Procedure .............................................89 .
DTC P0705 PARK/NEUTRAL POSITION SWITCH... 66 DTC P0730 BELT DAMAGE ....................................91 .
Description ............................................................. 66
. Description .............................................................91
.
CONSULT-III Reference Value .............................. 66 . CONSULT-III Reference Value ...............................91 .
Revision: December 2006 CVT-2 2007 Sentra
On Board Diagnosis Logic .................................... 91 . On Board Diagnosis Logic ................................... 108 .
Possible Cause ..................................................... 91 . Possible Cause .................................................... 108 . A
DTC Confirmation Procedure ................................ 91 . DTC Confirmation Procedure .............................. 108 .
WITH CONSULT-III ............................................ 91 . WITH CONSULT-III .......................................... 108 .
Diagnostic Procedure ............................................ 91 . WITH GST ........................................................ 108 . B
DTC P0740 TORQUE CONVERTER CLUTCH Diagnostic Procedure .......................................... 109 .
SOLENOID VALVE .................................................. 92 . DTC P0778 PRESSURE CONTROL SOLENOID B
Description ............................................................ 92
. ELECTRICAL (SEC PRESSURE SOLENOID
CONSULT-III Reference Value .............................. 92 . VALVE) ................................................................... 110
. CVT
On Board Diagnosis Logic .................................... 92 . Description ........................................................... 110
.
Possible Cause ..................................................... 92 . CONSULT-III Reference Value ............................ 110 .
DTC Confirmation Procedure ................................ 92 . On Board Diagnosis Logic ................................... 110 . D
WITH CONSULT-III ............................................ 92 . Possible Cause .................................................... 110 .
WITH GST .......................................................... 92. DTC Confirmation Procedure .............................. 110 .
Wiring Diagram -- CVT -- TCV ............................ 93 . WITH CONSULT-III .......................................... 110 . E
TCM TERMINALS AND REFERENCE VALUES 94 ... WITH GST ........................................................ 110 .
Diagnostic Procedure ............................................ 94 . Wiring Diagram -- CVT -- SECPSV ....................111 .
Component Inspection .......................................... 96 . TCM TERMINALS AND REFERENCE VALUES 112 .
TORQUE CONVERTER CLUTCH SOLENOID Diagnostic Procedure .......................................... 112 . F
VALVE ................................................................ 96
. Component Inspection ......................................... 113 .
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)... 97 PRESSURE CONTROL SOLENOID VALVE B
Description ............................................................ 97
. (SECONDARY PRESSURE SOLENOID VALVE) G
CONSULT-III Reference Value .............................. 97 . . 113
On Board Diagnosis Logic .................................... 97 . DTC P0826 MANUAL MODE SWITCH CIRCUIT .. 115 .
Possible Cause ..................................................... 97 . Description ........................................................... 115
. H
DTC Confirmation Procedure ................................ 97 . CONSULT-II Reference Value ............................. 115 .
WITH CONSULT-III ............................................ 97 . On Board Diagnosis Logic ................................... 115 .
WITH GST .......................................................... 97. Possible Cause .................................................... 115 .
I
Diagnostic Procedure ............................................ 98 . DTC Confirmation Procedure .............................. 115 .
DTC P0745 LINE PRESSURE SOLENOID VALVE 100 . WITH CONSULT-III .......................................... 115 .
Description .......................................................... 100
. Wiring Diagram -- CVT -- MMSW ...................... 116 .
CONSULT-III Reference Value ............................ 100 . TCM TERMINALS AND REFERENCE VALUES 117 . J
On Board Diagnosis Logic .................................. 100 . Diagnostic Procedure .......................................... 117 .
Possible Cause ................................................... 100 . Component Inspection ......................................... 119 .
DTC Confirmation Procedure .............................. 100 . STEERING SHIFT SWITCH ............................ 119 . K
WITH CONSULT-III .......................................... 100 . MANUAL MODE SWITCH ............................... 120 .
WITH GST ........................................................ 100 . DTC P0840 TRANSMISSION FLUID PRESSURE
Wiring Diagram -- CVT -- LPSV ........................ 101 . SENSOR A CIRCUIT (SEC PRESSURE SENSOR) 121 .
L
TCM TERMINALS AND REFERENCE VALUES 102 . Description ........................................................... 121
.
Diagnostic Procedure .......................................... 102 . CONSULT-III Reference Value ............................ 121 .
Component Inspection ........................................ 103 . On Board Diagnosis Logic ................................... 121 .
PRESSURE CONTROL SOLENOID VALVE A Possible Cause .................................................... 121 . M
(LINE PRESSURE SOLENOID VALVE) .......... 103 . DTC Confirmation Procedure .............................. 121 .
DTC P0746 PRESSURE CONTROL SOLENOID A WITH CONSULT-III .......................................... 121 .
PERFORMANCE (LINE PRESSURE SOLENOID WITH GST ........................................................ 121 .
VALVE) ................................................................... 105
. Wiring Diagram -- CVT -- SECPS ..................... 122 .
Description .......................................................... 105
. TCM TERMINALS AND REFERENCE VALUES 123 .
CONSULT-III Reference Value ............................ 105 . Diagnostic Procedure .......................................... 123 .
On Board Diagnosis Logic .................................. 105 . DTC P0841 PRESSURE SENSOR FUNCTION .... 125 .
Possible Cause ................................................... 105 . Description ........................................................... 125
.
DTC Confirmation Procedure .............................. 105 . CONSULT-III Reference Value ............................ 125 .
WITH CONSULT-III .......................................... 105 . On Board Diagnosis Logic ................................... 125 .
WITH GST ........................................................ 105 . Possible Cause .................................................... 125 .
Diagnostic Procedure .......................................... 106 . DTC Confirmation Procedure .............................. 125 .
DTC P0776 PRESSURE CONTROL SOLENOID B WITH CONSULT-III .......................................... 125 .
PERFORMANCE (SEC PRESSURE SOLENOID Diagnostic Procedure .......................................... 126 .
VALVE) ................................................................... 108
. DTC P0845 TRANSMISSION FLUID PRESSURE
Description .......................................................... 108
. SENSOR B CIRCUIT (PRI PRESSURE SENSOR). 128
CONSULT-III Reference Value ............................ 108 . Description ........................................................... 128
.
Revision: December 2006 CVT-3 2007 Sentra
CONSULT-III Reference Value ............................ 128 . CIRCUIT ................................................................. 146
.
On Board Diagnosis Logic ................................... 128 . Description ........................................................... 146
.
Possible Cause .................................................... 128
. CONSULT-III Reference Value ............................. 146 .
DTC Confirmation Procedure .............................. 128 . On Board Diagnosis Logic ................................... 146 .
WITH CONSULT-III .......................................... 128 . Possible Cause .................................................... 146.
WITH GST ........................................................ 128
. DTC Confirmation Procedure ............................... 146 .
Wiring Diagram -- CVT -- PRIPS ....................... 129 . WITH CONSULT-III ........................................... 146 .
TCM TERMINALS AND REFERENCE VALUES 130 . WITH GST ........................................................ 146.
Diagnostic Procedure .......................................... 130 . Wiring Diagram -- CVT -- L/USSV ..................... 147 .
DTC P0868 SECONDARY PRESSURE DOWN .... 132 . TCM TERMINALS AND REFERENCE VALUES.148
Description ........................................................... 132
. Diagnostic Procedure ........................................... 148 .
CONSULT-III Reference Value ............................ 132 . Component Inspection ......................................... 149 .
On Board Diagnosis Logic ................................... 132 . LOCK-UP SELECT SOLENOID VALVE ........... 149 .
Possible Cause .................................................... 132
. DTC P1745 LINE PRESSURE CONTROL ............ 151 .
DTC Confirmation Procedure .............................. 132 . Description ........................................................... 151
.
WITH CONSULT-III .......................................... 132 . On Board Diagnosis Logic ................................... 151 .
Diagnostic Procedure .......................................... 132 . Possible Cause .................................................... 151.
DTC P1701 TRANSMISSION CONTROL MODULE DTC Confirmation Procedure ............................... 151 .
(POWER SUPPLY) ................................................. 134 . WITH CONSULT-III ........................................... 151 .
Description ........................................................... 134
. Diagnostic Procedure ........................................... 151 .
On Board Diagnosis Logic ................................... 134 . DTC P1777 STEP MOTOR - CIRCUIT ................... 152 .
Possible Cause .................................................... 134
. Description ........................................................... 152
.
DTC Confirmation Procedure .............................. 134 . CONSULT-III Reference Value ............................. 152 .
WITH CONSULT-III .......................................... 134 . On Board Diagnosis Logic ................................... 152 .
Wiring Diagram -- CVT -- POWER .................... 135 . Possible Cause .................................................... 152.
TCM TERMINALS AND REFERENCE VALUES 136 . DTC Confirmation Procedure ............................... 152 .
Diagnostic Procedure .......................................... 136 . WITH CONSULT-III ........................................... 152 .
DTC P1705 THROTTLE POSITION SENSOR ...... 138 . WITH GST ........................................................ 152.
Description ........................................................... 138
. Wiring Diagram -- CVT -- STM .......................... 153 .
CONSULT-III Reference Value ............................ 138 . TCM TERMINALS AND REFERENCE VALUES.154
On Board Diagnosis Logic ................................... 138 . Diagnostic Procedure ........................................... 154 .
Possible Cause .................................................... 138
. Component Inspection ......................................... 155 .
DTC Confirmation Procedure .............................. 138 . STEP MOTOR .................................................. 155 .
WITH CONSULT-III .......................................... 138 . DTC P1778 STEP MOTOR - FUNCTION ............... 156 .
Diagnostic Procedure .......................................... 139 . Description ........................................................... 156
.
DTC P1722 ESTM VEHICLE SPEED SIGNAL ...... 140 . CONSULT-III Reference Value ............................. 156 .
Description ........................................................... 140
. On Board Diagnosis Logic ................................... 156 .
CONSULT-III Reference Value ............................ 140 . Possible Cause .................................................... 156.
On Board Diagnosis Logic ................................... 140 . DTC Confirmation Procedure ............................... 156 .
Possible Cause .................................................... 140
. WITH CONSULT-III ........................................... 156 .
DTC Confirmation Procedure .............................. 140 . WITH GST ........................................................ 156.
WITH CONSULT-III .......................................... 140 . Diagnostic Procedure ........................................... 157 .
Diagnostic Procedure .......................................... 141 . OVERDRIVE CONTROL SWITCH ......................... 158 .
DTC P1723 CVT SPEED SENSOR FUNCTION .... 142 . Description ........................................................... 158
.
Description ........................................................... 142
. CONSULT-III Reference Value ............................. 158 .
On Board Diagnosis Logic ................................... 142 . Wiring Diagram -- CVT -- ODSW ....................... 159 .
Possible Cause .................................................... 142
. TCM TERMINALS AND REFERENCE VALUES.160
DTC Confirmation Procedure .............................. 142 . Diagnostic Procedure ........................................... 160 .
WITH CONSULT-III .......................................... 142 . Component Inspection ......................................... 162 .
Diagnostic Procedure .......................................... 143 . OVERDRIVE CONTROL SWITCH ................... 162 .
DTC P1726 ELECTRIC THROTTLE CONTROL SHIFT POSITION INDICATOR CIRCUIT ............... 163 .
SYSTEM ................................................................. 144
. Description ........................................................... 163
.
Description ........................................................... 144
. CONSULT-III Reference Value ............................. 163 .
On Board Diagnosis Logic ................................... 144 . Diagnostic Procedure ........................................... 163 .
Possible Cause .................................................... 144
. SHIFT POSITION INDICATOR SYMPTOM
DTC Confirmation Procedure .............................. 144 . CHART .............................................................. 163
.
WITH CONSULT-III .......................................... 144 . TROUBLE DIAGNOSIS FOR SYMPTOMS ........... 164 .
Diagnostic Procedure .......................................... 145 . Wiring Diagram -- CVT -- NONDTC .................. 164 .
DTC P1740 LOCK-UP SELECT SOLENOID VALVE TCM TERMINALS AND REFERENCE VALUES.168
Revision: December 2006 CVT-4 2007 Sentra
O/D OFF Indicator Lamp Does Not Come On .... 168 . Selector Lever Knob Removal and Installation .... 189 .
SYMPTOM: ...................................................... 168 . REMOVAL ........................................................ 189 . A
DIAGNOSTIC PROCEDURE ........................... 168 . INSTALLATION ................................................ 189 .
Engine Cannot Be Started in "P" or "N" Position . 169 Adjustment of CVT Position ................................. 189 .
SYMPTOM: ...................................................... 169 . Checking of CVT Position .................................... 190 . B
DIAGNOSTIC PROCEDURE ........................... 169 . Adjustment of PNP switch ................................... 190 .
In "P" Position, Vehicle Moves Forward or Backward KEY INTERLOCK CABLE ..................................... 191 .
When Pushed ...................................................... 170 . Removal and Installation ..................................... 191 .
SYMPTOM: ...................................................... 170 . COMPONENTS ................................................ 191 . CVT
DIAGNOSTIC PROCEDURE ........................... 170 . REMOVAL ........................................................ 191 .
In "N" Position, Vehicle Moves ............................ 170 . INSTALLATION ................................................ 192 .
SYMPTOM: ...................................................... 170 . ON-VEHICLE SERVICE ......................................... 194 . D
DIAGNOSTIC PROCEDURE ........................... 170 . Oil Pan ................................................................. 194
.
Large Shock "N" "R" Position .......................... 171 . COMPONENTS ................................................ 194 .
SYMPTOM: ...................................................... 171 . Park/Neutral Position (PNP) Switch .................... 195 . E
DIAGNOSTIC PROCEDURE ........................... 171 . COMPONENTS ................................................ 195 .
Vehicle Does Not Creep Backward in "R" Position 172 . Primary Speed Sensor ........................................ 196 .
SYMPTOM: ...................................................... 172 . COMPONENTS ................................................ 196 .
DIAGNOSTIC PROCEDURE ........................... 172 . Secondary Speed Sensor .................................... 197 . F
Vehicle Does Not Creep Forward in "D" or "L" Posi- COMPONENTS ................................................ 197 .
tion ...................................................................... 173
. Differential Side Oil Seal ...................................... 198 .
SYMPTOM: ...................................................... 173 . COMPONENTS ................................................ 198 . G
DIAGNOSTIC PROCEDURE ........................... 173 . REMOVAL ........................................................ 198 .
Vehicle Speed Does Not Change in "L" Position . 174 INSTALLATION ................................................ 198 .
SYMPTOM: ...................................................... 174 . Oil Pump Fitting Bolt ............................................ 199 . H
DIAGNOSTIC PROCEDURE ........................... 174 . COMPONENTS ................................................ 199 .
Vehicle Speed Does Not Change in overdrive-off AIR BREATHER HOSE ......................................... 200 .
mode ................................................................... 175
. Removal and Installation (MR20DE) ................... 200 .
I
SYMPTOM: ...................................................... 175 . Removal and Installation (QR25DE) ................... 201 .
DIAGNOSTIC PROCEDURE ........................... 175 . CVT FLUID COOLER SYSTEM ............................. 202 .
Vehicle Speed Does Not Change in "D" Position . 176 CVT Fluid Cooler Removal and Installation
SYMPTOM: ...................................................... 176 . (MR20DE) ............................................................ 202
. J
DIAGNOSTIC PROCEDURE ........................... 176 . COMPONENTS ................................................ 202 .
Cannot Be Changed to Manual Mode ................. 177 . CVT Fluid Cooler Removal and Installation
SYMPTOM: ...................................................... 177 . (QR25DE) ............................................................ 203
. K
DIAGNOSTIC PROCEDURE ........................... 177 . COMPONENTS ................................................ 203 .
CVT Does Not Shift in Manual Mode .................. 177 . TRANSAXLE ASSEMBLY ..................................... 204 .
SYMPTOM: ...................................................... 177 . Removal and Installation (MR20DE) ................... 204 .
L
DIAGNOSTIC PROCEDURE ........................... 177 . COMPONENTS ................................................ 204 .
Vehicle Does Not Decelerate by Engine Brake ... 179 . REMOVAL ........................................................ 204 .
SYMPTOM: ...................................................... 179 . INSTALLATION ................................................ 205 .
DIAGNOSTIC PROCEDURE ........................... 179 . Removal and Installation (QR25DE) ................... 207 . M
TRANSMISSION CONTROL MODULE ................ 180 . COMPONENTS ................................................ 207 .
Removal and Installation ..................................... 180 . REMOVAL ........................................................ 207 .
COMPONENTS ............................................... 180 . INSTALLATION ................................................ 208 .
REMOVAL ........................................................ 180 . REPAIR FOR COMPONENT PARTS .................... 210 .
INSTALLATION ................................................ 180 . Torque Converter and Converter Housing Oil Seal 210 .
CVT SHIFT LOCK SYSTEM .................................. 181 . COMPONENTS ................................................ 210 .
Description .......................................................... 181. SERVICE DATA AND SPECIFICATIONS (SDS) ... 211 .
Shift Lock System Electrical Parts Location ........ 181 . General Specifications ......................................... 211 .
Wiring Diagram -- CVT -- SHIFT ....................... 182 . Vehicle Speed When Shifting Gears ................... 211 .
Diagnostic Procedure .......................................... 183 . Stall Speed .......................................................... 211
.
SHIFT CONTROL SYSTEM .................................. 186 . Line Pressure ...................................................... 211.
Removal and Installation ..................................... 186 . Solenoid Valves ................................................... 212 .
CONTROL DEVICE COMPONENTS .............. 186 . CVT Fluid Temperature Sensor ........................... 212 .
CONTROL CABLE COMPONENTS ................ 187 . Primary Speed Sensor ........................................ 212 .
REMOVAL ........................................................ 187 . Secondary Speed Sensor .................................... 212 .
INSTALLATION ................................................ 188 . Removal and Installation ..................................... 212 .
Revision: December 2006 CVT-5 2007 Sentra
INDEX FOR DTC
INDEX FOR DTC PFP:00024
Alphabetical Index UCS005XB
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-60 .
DTC
Items OBD-II Except OBD-II
Reference page
(CONSULT-III screen terms) CONSULT-III CONSULT-III only
GST*1 "TRANSMISSION"
A/T TCC S/V FNCTN P0744 P0744 CVT-97
ATF TEMP SEN/CIRC P0710 P0710 CVT-72
BELT DAMG -- P0730 CVT-91
BRAKE SW/CIRC -- P0703 CVT-64
CAN COMM CIRCUIT U1000 U1000 CVT-60
TRANSMISSION CONTROL UNIT (CAN) U1010 U1010 CVT-63
CVT SPD SEN/FNCTN -- P1723 CVT-142
ENGINE SPEED SIG -- P0725 CVT-89
ELEC TH CONTROL -- P1726 CVT-144
ESTM VEH SPD SIG*2 -- P1722 CVT-140
INPUT SPD SEN/CIRC P0715 P0715 CVT-77
L/PRESS CONTROL -- P1745 CVT-151
L/PRESS SOL/CIRC P0745 P0745 CVT-100
LU-SLCT SOL/CIRC P1740 P1740 CVT-146
MANUAL MODE SWITCH -- P0826 CVT-115
PNP SW/CIRC P0705 P0705 CVT-66
PRESS SEN/FNCTN -- P0841 CVT-125
PRS CNT SOL/A FCTN P0746 P0746 CVT-105
PRS CNT SOL/B CIRC P0778 P0778 CVT-110
PRS CNT SOL/B FCTN P0776 P0776 CVT-108
SEC/PRESS DOWN -- P0868 CVT-132
STEP MOTR CIRC P1777 P1777 CVT-152
STEP MOTR/FNC P1778 P1778 CVT-156
TCC SOLENOID/CIRC P0740 P0740 CVT-92
TCM-POWER SUPPLY -- P1701 CVT-134
TP SEN/CIRC A/T -- P1705 CVT-138
TR PRS SENS/A CIRC P0840 P0840 CVT-121
TR PRS SENS/B CIRC P0845 P0845 CVT-128
VEH SPD SEN/CIR AT P0720 P0720 CVT-83
*1: These numbers are prescribed by SAE J2012.
*2: Models without ABS does not indicate.
Revision: December 2006 CVT-6 2007 Sentra
INDEX FOR DTC
DTC No. Index UCS005XC
A
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-60 .
B
DTC
OBD-II Except OBD-II Items
Reference page
CONSULT-III (CONSULT-III screen terms)
CONSULT-III only CVT
GST*1 "TRANSMISSION"
-- P0703 BRAKE SW/CIRC CVT-64
P0705 P0705 PNP SW/CIRC CVT-66 D
P0710 P0710 ATF TEMP SEN/CIRC CVT-72
P0715 P0715 INPUT SPD SEN/CIRC CVT-77
E
P0720 P0720 VEH SPD SEN/CIR AT CVT-83
-- P0725 ENGINE SPEED SIG CVT-89
-- P0730 BELT DAMG CVT-91 F
P0740 P0740 TCC SOLENOID/CIRC CVT-92
P0744 P0744 A/T TCC S/V FNCTN CVT-97
G
P0745 P0745 L/PRESS SOL/CIRC CVT-100
P0746 P0746 PRS CNT SOL/A FCTN CVT-105
P0776 P0776 PRS CNT SOL/B FCTN CVT-108 H
P0778 P0778 PRS CNT SOL/B CIRC CVT-110
-- P0826 MANUAL MODE SWITCH CVT-115
P0840 P0840 TR PRS SENS/A CIRC CVT-121 I
-- P0841 PRESS SEN/FNCTN CVT-125
P0845 P0845 TR PRS SENS/B CIRC CVT-128
J
-- P0868 SEC/PRESS DOWN CVT-132
-- P1701 TCM-POWER SUPPLY CVT-134
-- P1705 TP SEN/CIRC A/T CVT-138 K
-- P1722 ESTM VEH SPD SIG*2 CVT-140
-- P1723 CVT SPD SEN/FNCTN CVT-142 L
-- P1726 ELEC TH CONTROL CVT-144
P1740 P1740 LU-SLCT SOL/CIRC CVT-146
-- P1745 L/PRESS CONTROL CVT-151 M
P1777 P1777 STEP MOTR CIRC CVT-152
P1778 P1778 STEP MOTR/FNC CVT-156
U1000 U1000 CAN COMM CIRCUIT CVT-60
U1010 U1010 TRANSMISSION CONTROL UNIT (CAN) CVT-63
*1: These numbers are prescribed by SAE J2012.
*2: Models without ABS does not indicate.
Revision: December 2006 CVT-7 2007 Sentra
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" ECS00J2Y
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
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.
WARNING:
G To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
G Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
G Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions Necessary for Steering Wheel Rotation After Battery Disconnect
UCS0078M
NOTE:
G This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
G Remove and install all control units after disconnecting both battery cables with the ignition knob in the
LOCK position.
G Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ACC position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the LOCK position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-III.
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