engine control NISSAN TIIDA 2007 Service Manual Online
[x] Cancel search | Manufacturer: NISSAN, Model Year: 2007, Model line: TIIDA, Model: NISSAN TIIDA 2007Pages: 2896, PDF Size: 64.73 MB
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CVT-2Revision: June 20062007 Versa HOW TO ERASE DTC (WITH GST) ................... 32
Malfunction Indicator Lamp (MIL) ........................... 33
DESCRIPTION .................................................... 33
TROUBLE DIAGNOSIS ............................................ 34
DTC Inspection Priority Chart ................................. 34
Fail-safe .................................................................. 34
FAIL-SAFE FUNCTION ....................................... 34
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ...................................................... 35
INTRODUCTION ................................................. 35
WORK FLOW ...................................................... 36
DIAGNOSTIC WORKSHEET .............................. 37
CVT Electrical Parts Location ................................. 40
Circuit Diagram ....................................................... 42
Inspections before Trouble Diagnosis .................... 43
CVT FLUID CHECK ............................................ 43
STALL TEST ........................................................ 43
LINE PRESSURE TEST ...................................... 45
Road Test ............................................................... 46
DESCRIPTION .................................................... 46
CONSULT-II OPERATION PROCEDURE ........... 47
Check before Engine Is Started .............................. 49
Check at Idle ........................................................... 49
Cruise Test .............................................................. 50
Vehicle Speed When Shifting Gears ...................... 53
TCM Input/Output Signal Reference Values ........... 54
TCM TERMINAL CONNECTOR LAYOUT .......... 54
TCM INSPECTION TABLE .................................. 54
CONSULT-II Function (TRANSMISSION) .............. 57
FUNCTION .......................................................... 57
CONSULT-II REFERENCE VALUE ..................... 57
CONSULT-II SETTING PROCEDURE ................ 59
WORK SUPPORT MODE ................................... 59
SELF-DIAGNOSTIC RESULT MODE ................. 60
DATA MONITOR MODE ...................................... 64
CAN DIAGNOSTIC SUPPORT MONITOR
MODE .................................................................. 66
Diagnostic Procedure without CONSULT-II ............ 67
OBD-II SELF-DIAGNOSTIC PROCEDURE
(WITH GST) ......................................................... 67
DTC U1000 CAN COMMUNICATION LINE .............. 68
Description .............................................................. 68
On Board Diagnosis Logic ...................................... 68
Possible Cause ....................................................... 68
DTC Confirmation Procedure ................................. 68
WITH CONSULT-II .............................................. 68
WITH GST ........................................................... 68
Wiring Diagram — CVT — CAN ............................. 69
Diagnostic Procedure ............................................. 70
DTC U1010 TRANSMISSION CONTROL MODULE
(CAN) ......................................................................... 71
Description .............................................................. 71
On Board Diagnosis Logic ...................................... 71
Possible Cause ....................................................... 71
DTC Confirmation Procedure ................................. 71
WITH CONSULT-II .............................................. 71
WITH GST ........................................................... 71
Diagnostic Procedure ............................................. 71
DTC P0615 START SIGNAL CIRCUIT ..................... 72Description ..............................................................72
CONSULT-II Reference Value .................................72
On Board Diagnosis Logic ......................................72
Possible Cause .......................................................72
DTC Confirmation Procedure ..................................72
WITH CONSULT-II ...............................................72
Wiring Diagram — CVT — STSIG ..........................73
Diagnostic Procedure ..............................................74
DTC P0703 STOP LAMP SWITCH CIRCUIT ............76
Description ..............................................................76
CONSULT-II Reference Value .................................76
On Board Diagnosis Logic ......................................76
Possible Cause .......................................................76
DTC Confirmation Procedure ..................................76
WITH CONSULT-II ...............................................76
Diagnostic Procedure ..............................................77
DTC P0705 PARK/NEUTRAL POSITION SWITCH ...78
Description ..............................................................78
CONSULT-II Reference Value .................................78
On Board Diagnosis Logic ......................................78
Possible Cause .......................................................78
DTC Confirmation Procedure ..................................78
WITH CONSULT-II ...............................................79
WITH GST ...........................................................79
Wiring Diagram — CVT — PNP/SW .......................80
Diagnostic Procedure ..............................................82
Component Inspection ............................................84
PNP SWITCH ......................................................84
DTC P0710 CVT FLUID TEMPERATURE SENSOR
CIRCUIT ....................................................................85
Description ..............................................................85
CONSULT-II Reference Value .................................85
On Board Diagnosis Logic ......................................85
Possible Cause .......................................................85
DTC Confirmation Procedure ..................................85
WITH CONSULT-II ...............................................85
WITH GST ...........................................................85
Wiring Diagram — CVT — FTS ..............................86
Diagnostic Procedure ..............................................87
Component Inspection ............................................89
CVT FLUID TEMPERATURE SENSOR ..............89
DTC P0715 INPUT SPEED SENSOR CIRCUIT (PRI
SPEED SENSOR) .....................................................90
Description ..............................................................90
CONSULT-II Reference Value .................................90
On Board Diagnosis Logic ......................................90
Possible Cause .......................................................90
DTC Confirmation Procedure ..................................90
WITH CONSULT-II ...............................................90
WITH GST ...........................................................90
Wiring Diagram — CVT — PRSCVT ......................91
Diagnostic Procedure ..............................................92
DTC P0720 VEHICLE SPEED SENSOR CVT (SEC-
ONDARY SPEED SENSOR) .....................................95
Description ..............................................................95
CONSULT-II Reference Value .................................95
On Board Diagnosis Logic ......................................95
Possible Cause .......................................................95
DTC Confirmation Procedure ..................................95
Page 900 of 2896
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Revision: June 20062007 Versa WITH CONSULT-II .............................................. 95
WITH GST ........................................................... 95
Wiring Diagram — CVT — SESCVT ...................... 96
Diagnostic Procedure ............................................. 97
DTC P0725 ENGINE SPEED SIGNAL ................... 101
Description ........................................................... 101
CONSULT-II Reference Value .............................. 101
On Board Diagnosis Logic ................................... 101
Possible Cause .................................................... 101
DTC Confirmation Procedure ............................... 101
WITH CONSULT-II ............................................ 101
Diagnostic Procedure ........................................... 101
DTC P0730 BELT DAMAGE .................................. 103
Description ........................................................... 103
CONSULT-II Reference Value .............................. 103
On Board Diagnosis Logic ................................... 103
Possible Cause .................................................... 103
DTC Confirmation Procedure ............................... 103
WITH CONSULT-II ............................................ 103
Diagnostic Procedure ........................................... 104
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE ................................................. 105
Description ........................................................... 105
CONSULT-II Reference Value .............................. 105
On Board Diagnosis Logic ................................... 105
Possible Cause .................................................... 105
DTC Confirmation Procedure ............................... 105
WITH CONSULT-II ............................................ 105
WITH GST ......................................................... 105
Wiring Diagram — CVT — TCV ........................... 106
Diagnostic Procedure ........................................... 107
Component Inspection ......................................... 109
TORQUE CONVERTER CLUTCH SOLENOID
VALVE ............................................................... 109
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) .. 110
Description ............................................................ 110
CONSULT-II Reference Value ............................... 110
On Board Diagnosis Logic .................................... 110
Possible Cause ..................................................... 110
DTC Confirmation Procedure ................................ 110
WITH CONSULT-II ............................................. 110
WITH GST .......................................................... 110
Diagnostic Procedure ........................................... . 111
DTC P0745 LINE PRESSURE SOLENOID VALVE .. 113
Description ............................................................ 113
CONSULT-II Reference Value ............................... 113
On Board Diagnosis Logic .................................... 113
Possible Cause ..................................................... 113
DTC Confirmation Procedure ................................ 113
WITH CONSULT-II ............................................. 113
WITH GST .......................................................... 113
Wiring Diagram — CVT — LPSV .......................... 114
Diagnostic Procedure ............................................ 115
Component Inspection .......................................... 117
PRESSURE CONTROL SOLENOID VALVE A
(LINE PRESSURE SOLENOID VALVE) ............ 117
DTC P0746 PRESSURE CONTROL SOLENOID A
PERFORMANCE (LINE PRESSURE SOLENOID
VALVE) ..................................................................... 118Description ............................................................118
CONSULT-II Reference Value ..............................118
On Board Diagnosis Logic ....................................118
Possible Cause .....................................................118
DTC Confirmation Procedure ...............................118
WITH CONSULT-II ............................................118
WITH GST .........................................................118
Diagnostic Procedure ...........................................119
DTC P0776 PRESSURE CONTROL SOLENOID B
PERFORMANCE (SEC PRESSURE SOLENOID
VALVE) ....................................................................121
Description ............................................................121
CONSULT-II Reference Value ..............................121
On Board Diagnosis Logic ....................................121
Possible Cause .....................................................121
DTC Confirmation Procedure ...............................121
WITH CONSULT-II ............................................121
WITH GST .........................................................121
Diagnostic Procedure ...........................................122
DTC P0778 PRESSURE CONTROL SOLENOID B
ELECTRICAL (SEC PRESSURE SOLENOID
VALVE) ....................................................................124
Description ............................................................124
CONSULT-II Reference Value ..............................124
On Board Diagnosis Logic ....................................124
Possible Cause .....................................................124
DTC Confirmation Procedure ...............................124
WITH CONSULT-II ............................................124
WITH GST .........................................................124
Wiring Diagram — CVT — SECPSV ....................125
Diagnostic Procedure ...........................................126
Component Inspection ..........................................128
PRESSURE CONTROL SOLENOID VALVE B
(SECONDARY PRESSURE SOLENOID VALVE)
.128
DTC P0840 TRANSMISSION FLUID PRESSURE
SENSOR A CIRCUIT (SEC PRESSURE SENSOR) .129
Description ............................................................129
CONSULT-II Reference Value ..............................129
On Board Diagnosis Logic ....................................129
Possible Cause .....................................................129
DTC Confirmation Procedure ...............................129
WITH CONSULT-II ............................................129
WITH GST .........................................................129
Wiring Diagram — CVT — SECPS ......................130
Diagnostic Procedure ...........................................131
DTC P0841 PRESSURE SENSOR FUNCTION .....134
Description ............................................................134
CONSULT-II Reference Value ..............................134
On Board Diagnosis Logic ....................................134
Possible Cause .....................................................134
DTC Confirmation Procedure ...............................134
WITH CONSULT-II ............................................134
Diagnostic Procedure ...........................................135
DTC P0845 TRANSMISSION FLUID PRESSURE
SENSOR B CIRCUIT (PRI PRESSURE SENSOR) .137
Description ............................................................137
CONSULT-II Reference Value ..............................137
On Board Diagnosis Logic ....................................137
Page 901 of 2896
CVT-4Revision: June 20062007 Versa Possible Cause .....................................................137
DTC Confirmation Procedure ...............................137
WITH CONSULT-II ............................................137
WITH GST .........................................................137
Wiring Diagram — CVT — PRIPS ........................138
Diagnostic Procedure ...........................................139
DTC P0868 SECONDARY PRESSURE DOWN .....142
Description ............................................................142
CONSULT-II Reference Value ..............................142
On Board Diagnosis Logic ....................................142
Possible Cause .....................................................142
DTC Confirmation Procedure ...............................142
WITH CONSULT-II ............................................142
Diagnostic Procedure ...........................................143
DTC P1701 TRANSMISSION CONTROL MODULE
(POWER SUPPLY) ..................................................145
Description ............................................................145
On Board Diagnosis Logic ....................................145
Possible Cause .....................................................145
DTC Confirmation Procedure ...............................145
WITH CONSULT-II ............................................145
Wiring Diagram — CVT — POWER .....................146
Diagnostic Procedure ...........................................147
DTC P1705 THROTTLE POSITION SENSOR .......150
Description ............................................................150
CONSULT-II Reference Value ..............................150
On Board Diagnosis Logic ....................................150
Possible Cause .....................................................150
DTC Confirmation Procedure ...............................150
WITH CONSULT-II ............................................150
Diagnostic Procedure ...........................................151
DTC P1722 ESTM VEHICLE SPEED SIGNAL .......152
Description ............................................................152
CONSULT-II Reference Value ..............................152
On Board Diagnosis Logic ....................................152
Possible Cause .....................................................152
DTC Confirmation Procedure ...............................152
WITH CONSULT-II ............................................152
Diagnostic Procedure ...........................................153
DTC P1723 CVT SPEED SENSOR FUNCTION .....154
Description ............................................................154
On Board Diagnosis Logic ....................................154
Possible Cause .....................................................154
DTC Confirmation Procedure ...............................154
WITH CONSULT-II ............................................154
Diagnostic Procedure ...........................................155
DTC P1726 ELECTRIC THROTTLE CONTROL
SYSTEM ..................................................................156
Description ............................................................156
On Board Diagnosis Logic ....................................156
Possible Cause .....................................................156
DTC Confirmation Procedure ...............................156
WITH CONSULT-II ............................................156
Diagnostic Procedure ...........................................157
DTC P1740 LOCK-UP SELECT SOLENOID VALVE
CIRCUIT ..................................................................158
Description ............................................................158
CONSULT-II Reference Value ..............................158
On Board Diagnosis Logic ....................................158Possible Cause ..................................................... 158
DTC Confirmation Procedure ................................ 158
WITH CONSULT-II ............................................. 158
WITH GST ......................................................... 158
Wiring Diagram — CVT — L/USSV ...................... 159
Diagnostic Procedure ............................................ 160
Component Inspection .......................................... 162
LOCK-UP SELECT SOLENOID VALVE ............ 162
DTC P1745 LINE PRESSURE CONTROL ............. 163
Description ............................................................ 163
On Board Diagnosis Logic .................................... 163
Possible Cause ..................................................... 163
DTC Confirmation Procedure ................................ 163
WITH CONSULT-II ............................................. 163
Diagnostic Procedure ............................................ 163
DTC P1777 STEP MOTOR - CIRCUIT .................... 164
Description ............................................................ 164
CONSULT-II Reference Value ............................... 164
On Board Diagnosis Logic .................................... 164
Possible Cause ..................................................... 164
DTC Confirmation Procedure ................................ 164
WITH CONSULT-II ............................................. 164
WITH GST ......................................................... 164
Wiring Diagram — CVT — STM ........................... 165
Diagnostic Procedure ............................................ 166
Component Inspection .......................................... 167
STEP MOTOR ................................................... 167
DTC P1778 STEP MOTOR - FUNCTION ................ 168
Description ............................................................ 168
CONSULT-II Reference Value ............................... 168
On Board Diagnosis Logic .................................... 168
Possible Cause ..................................................... 168
DTC Confirmation Procedure ................................ 168
WITH CONSULT-II ............................................. 168
WITH GST ......................................................... 169
Diagnostic Procedure ............................................ 169
OVERDRIVE CONTROL SWITCH .......................... 170
Description ............................................................ 170
CONSULT-II Reference Value ............................... 170
Wiring Diagram — CVT — ODSW ........................ 171
Diagnostic Procedure ............................................ 172
Component Inspection .......................................... 174
OVERDRIVE CONTROL SWITCH .................... 174
SHIFT POSITION INDICATOR CIRCUIT ................ 175
Description ............................................................ 175
CONSULT-II Reference Value ............................... 175
Diagnostic Procedure ............................................ 175
SHIFT POSITION INDICATOR SYMPTOM
CHART ............................................................... 175
TROUBLE DIAGNOSIS FOR SYMPTOMS ............ 176
Wiring Diagram — CVT — NONDTC ................... 176
O/D OFF Indicator Lamp Does Not Come On ...... 180
SYMPTOM: ........................................................ 180
DIAGNOSTIC PROCEDURE ............................. 180
Engine Cannot Be Started in “P” and “N” Position . 181
SYMPTOM: ........................................................ 181
DIAGNOSTIC PROCEDURE ............................. 181
In “P” Position, Vehicle Moves Forward or Backward
When Pushed ....................................................... 182
Page 902 of 2896
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DIAGNOSTIC PROCEDURE ............................ 182
In “N” Position, Vehicle Moves ............................. 182
SYMPTOM: ....................................................... 182
DIAGNOSTIC PROCEDURE ............................ 182
Large Shock “N” → “R” Position ........................... 183
SYMPTOM: ....................................................... 183
DIAGNOSTIC PROCEDURE ............................ 183
Vehicle Does Not Creep Backward in “R” Position . 184
SYMPTOM: ....................................................... 184
DIAGNOSTIC PROCEDURE ............................ 184
Vehicle Does Not Creep Forward in “D” or “L” Posi-
tion ....................................................................... 185
SYMPTOM: ....................................................... 185
DIAGNOSTIC PROCEDURE ............................ 185
Vehicle Speed Does Not Change in “L” Position .. 186
SYMPTOM: ....................................................... 186
DIAGNOSTIC PROCEDURE ............................ 186
Vehicle Speed Does Not Change in overdrive-off
mode .................................................................... 187
SYMPTOM: ....................................................... 187
DIAGNOSTIC PROCEDURE ............................ 187
Vehicle Speed Does Not Change in “D” Position . 188
SYMPTOM: ....................................................... 188
DIAGNOSTIC PROCEDURE ............................ 188
Vehicle Does Not Decelerate by Engine Brake .... 189
SYMPTOM: ....................................................... 189
DIAGNOSTIC PROCEDURE ............................ 189
TRANSMISSION CONTROL MODULE ................. 190
Removal and Installation ...................................... 190
COMPONENTS ................................................ 190
REMOVAL ......................................................... 190
INSTALLATION ................................................. 190
SHIFT CONTROL SYSTEM ................................... 191
Removal and Installation ...................................... 191
CONTROL DEVICE COMPONENTS ............... 191
CONTROL CABLE COMPONENTS ................. 192
REMOVAL ......................................................... 192
INSTALLATION ................................................. 194
Control Device Disassembly and Assembly ......... 194
DISASSEMBLY ................................................. 194ASSEMBLY .......................................................194
Selector Lever Knob Removal and Installation .....195
REMOVAL .........................................................195
INSTALLATION .................................................195
Adjustment of CVT Position ..................................195
Checking of CVT Position .....................................196
CVT SHIFT LOCK SYSTEM ...................................197
Description ............................................................197
Shift Lock System Electrical Parts Location .........197
Wiring Diagram — CVT — SHIFT ........................198
Diagnostic Procedure ...........................................199
KEY INTERLOCK CABLE ......................................202
Removal and Installation ......................................202
COMPONENTS .................................................202
REMOVAL .........................................................202
INSTALLATION .................................................203
AIR BREATHER HOSE ..........................................205
Removal and Installation ......................................205
REMOVAL .........................................................205
INSTALLATION .................................................205
DIFFERENTIAL SIDE OIL SEAL ............................206
Removal and Installation ......................................206
COMPONENTS .................................................206
REMOVAL .........................................................206
INSTALLATION .................................................206
TRANSAXLE ASSEMBLY ......................................207
Removal and Installation ......................................207
COMPONENTS .................................................207
REMOVAL .........................................................207
INSTALLATION .................................................208
SERVICE DATA AND SPECIFICATIONS (SDS) ....210
General Specifications ..........................................210
Vehicle Speed When Shifting Gears ....................210
Stall Speed ...........................................................210
Line Pressure .......................................................210
Solenoid Valves ....................................................210
CVT Fluid Temperature Sensor ............................211
Primary Speed Sensor .........................................211
Secondary Speed Sensor .....................................211
Removal and Installation ......................................211
Page 903 of 2896
CVT-6
INDEX FOR DTC
Revision: June 20062007 Versa
INDEX FOR DTCPFP: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-68
.
*1: These numbers are prescribed by SAE J2012.
*2: Models without ABS does not indicate.
Items
(CONSULT-II screen terms) DTC
Reference page OBD-II Except OBD-II
CONSULT-II
GST*
1 CONSULT-II only
“TRANSMISSION”
A/T TCC S/V FNCTN P0744 P0744 CVT-110
ATF TEMP SEN/CIRC P0710 P0710CVT-85
BELT DAMG — P0730CVT-103
BRAKE SW/CIRC — P0703CVT-76
CAN COMM CIRCUIT U1000 U1000CVT-68
CONTROL UNIT(CAN) U1010 U1010CVT-71
CVT SPD SEN/FNCTN — P1723CVT-154
ENGINE SPEED SIG — P0725CVT-101
ELEC TH CONTROL — P1726CVT-156
ESTM VEH SPD SIG*2— P1722CVT-152
INPUT SPD SEN/CIRC P0715 P0715CVT-90
L/PRESS CONTROL — P1745CVT-163
L/PRESS SOL/CIRC P0745 P0745CVT-113
LU-SLCT SOL/CIRC P1740 P1740CVT-158
PNP SW/CIRC P0705 P0705CVT-78
PRESS SEN/FNCTN — P0841CVT-134
PRS CNT SOL/A FCTN P0746 P0746CVT-118
PRS CNT SOL/B CIRC P0778 P0778CVT-124
PRS CNT SOL/B FCTN P0776 P0776CVT-121
SEC/PRESS DOWN — P0868CVT-142
STARTER RELAY/CIRC — P0615CVT-72
STEP MOTR CIRC P1777 P1777CVT-164
STEP MOTR/FNC P1778 P1778CVT-168
TCC SOLENOID/CIRC P0740 P0740CVT-105
TCM-POWER SUPPLY — P1701CVT-145
TP SEN/CIRC A/T — P1705CVT-150
TR PRS SENS/A CIRC P0840 P0840CVT-129
TR PRS SENS/B CIRC P0845 P0845CVT-137
VEH SPD SEN/CIR AT P0720 P0720CVT-95
Page 904 of 2896
INDEX FOR DTC
CVT-7
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Revision: June 20062007 Versa
DTC No. Index UCS005XC
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-68
.
*1: These numbers are prescribed by SAE J2012.
*2: Models without ABS does not indicate.
DTC
Items
(CONSULT-II screen terms)Reference page OBD-II Except OBD-II
CONSULT-II
GST*
1CONSULT-II only
“TRANSMISSION”
— P0615 STARTER RELAY/CIRCCVT-72
— P0703 BRAKE SW/CIRCCVT-76
P0705 P0705 PNP SW/CIRCCVT-78
P0710 P0710 ATF TEMP SEN/CIRCCVT-85
P0715 P0715 INPUT SPD SEN/CIRCCVT-90
P0720 P0720 VEH SPD SEN/CIR ATCVT-95
— P0725 ENGINE SPEED SIGCVT-101
— P0730 BELT DAMGCVT-103
P0740 P0740 TCC SOLENOID/CIRCCVT-105
P0744 P0744 A/T TCC S/V FNCTNCVT-110
P0745 P0745 L/PRESS SOL/CIRCCVT-113
P0746 P0746 PRS CNT SOL/A FCTNCVT-118
P0776 P0776 PRS CNT SOL/B FCTNCVT-121
P0778 P0778 PRS CNT SOL/B CIRCCVT-124
P0840 P0840 TR PRS SENS/A CIRCCVT-129
— P0841 PRESS SEN/FNCTNCVT-134
P0845 P0845 TR PRS SENS/B CIRCCVT-137
— P0868 SEC/PRESS DOWNCVT-142
— P1701 TCM-POWER SUPPLYCVT-145
— P1705 TP SEN/CIRC A/TCVT-150
— P1722
ESTM VEH SPD SIG*2CVT-152
— P1723 CVT SPD SEN/FNCTNCVT-154
— P1726 ELEC TH CONTROLCVT-156
P1740 P1740 LU-SLCT SOL/CIRCCVT-158
— P1745 L/PRESS CONTROLCVT-163
P1777 P1777 STEP MOTR CIRCCVT-164
P1778 P1778 STEP MOTR/FNCCVT-168
U1000 U1000 CAN COMM CIRCUITCVT-68
U1010 U1010 CONTROL UNIT(CAN)CVT-71
Page 907 of 2896
CVT-10
PRECAUTIONS
Revision: June 20062007 Versa
6. Turn the ignition switch ON.
CAUTION:
Do not start engine.
7. Select “SELF-DIAG RESULTS”.
8. Shift the selector lever to “R” position.
9. Depress slightly the accelerator pedal (Pedal angle: 2/8) while depressing the brake pedal.
10. Perform “ERASE”.
11. Shift the selector lever to “R” position after replacing TCM. Turn the ignition switch OFF.
12. Wait approximately 10 minutes after turning the ignition switch OFF.
13. Turn the ignition switch ON while shifting the selector lever to “R” position.
CAUTION:
Do not start engine.
14. Select “CALIBRATION DATA”.
15. Check that the value on “CALIBRATION DATA” is same as the data after erasing CVT-11, "
Calibration
Data" .
Restart the procedure from step 3 if the values are not same.
16. Shift the selector lever to “P” position.
17. Check that the shift position indicator in the combination meter turns ON (It indicates approximately 1 or 2
seconds after shifting the selector lever to “P” position.)
Check the following items if the shift position indicator does not turn ON. Repair or replace the shift
position indicator if necessary.
–The harness between TCM and ROM ASSY in the transaxle assembly is open or short.
–Cable disconnected, loosen, or bent from the connector housing.
–Power supply and ground of TCM. Refer to CVT-145, "DTC P1701 TRANSMISSION CONTROL MOD-
ULE (POWER SUPPLY)" .
Page 921 of 2896
CVT-24
CVT SYSTEM
Revision: June 20062007 Versa
TCM FunctionUCS005XT
The function of the TCM is to:
Receive input signals sent from various switches and sensors.
Determine required line pressure, shifting point, and lock-up operation.
Send required output signals to the step motor and the respective solenoids.
CONTROL SYSTEM OUTLINE
The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SENSORS (or SIGNAL)
TCM
ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Engine speed signal
CVT fluid temperature sensor
Vehicle speed signal
Overdrive control signal
Stop lamp switch signal
Primary speed sensor
Secondary speed sensor
Primary pressure sensor
Secondary pressure sensorShift control
Line pressure control
Primary pressure control
Secondary pressure control
Lock-up control
Engine brake control
Vehicle speed control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
Duet-EA control
CAN system
On board diagnosisStep mo to r
Torque converter clutch solenoid
valve
Lock-up select solenoid valve
Line pressure solenoid valve
Secondary pressure solenoid
valve
Shift position indicator
O/D OFF indicator lamp
Starter relay
SCIA7933E
Page 922 of 2896
CVT SYSTEM
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Revision: June 20062007 Versa
CAN CommunicationUCS005XU
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-47,
"CAN System Specification Chart" .
Input/Output Signal of TCMUCS005XV
*1: Input by CAN communications.
*2: Output by CAN communications.
*3: If these input and output signals are different, the TCM triggers the fail-safe function.Control itemFluid
pressure
controlSelect con-
trolShift con-
trolLock-up
controlCAN com-
munication
controlFail-safe
function
(*3)
InputPNP switch XXXXXX
Accelerator pedal position signal
(*1)XXXXXX
Closed throttle position signal
(*1)X XXX
Engine speed signal
(*1)XX XXX
CVT fluid temperature sensor X X X X X
Stop lamp switch signal
(*1)X XXX
Overdrive control signal
(*1)XX
Primary speed sensor X XXXX
Secondary speed sensor XXXXXX
Primary pressure sensor X X
Secondary pressure sensor X X X
TCM power supply voltage signal XXXXXX
Out-
putStep motor X X
TCC solenoid valve X X X
Lock-up select solenoid valve X X X
Line pressure solenoid valve X X X X
Secondary pressure solenoid valve X X X
O/D OFF indicator signal
(*2)XX
Page 923 of 2896
CVT-26
CVT SYSTEM
Revision: June 20062007 Versa
Line Pressure and Secondary Pressure ControlUCS005XW
When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the
TCM controls the line pressure solenoid valve and secondary pressure solenoid valve.
This line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the
pressure of the operating oil discharged from the oil pump to the line pressure most appropriate to the
driving state. Secondary pressure is controlled by decreasing line pressure.
NORMAL CONTROL
Optimize the line pressure and secondary pressure, depending on driving conditions, on the basis of the throt-
tle position, the engine speed, the primary pulley (input) revolution speed, the secondary pulley (output) revo-
lution speed, the brake signal, the PNP switch signal, the lock-up signal, the voltage, the target gear ratio, the
fluid temperature, and the fluid pressure.
FEEDBACK CONTROL
When controlling the normal fluid pressure or the selected fluid pressure, the secondary pressure can be set
more accurately by using the fluid pressure sensor to detect the secondary pressure and controlling the feed-
back.
Shift ControlUCS005XX
In order to select the gear ratio which can obtain the driving force in accordance with driver's intention and the
vehicle condition, TCM monitors the driving conditions, such as the vehicle speed and the throttle position and
selects the optimum gear ratio, and determines the gear change steps to the gear ratio. Then send the com-
mand to the step motor, and control the flow-in/flow-out of line pressure from the primary pulley to determine
the position of the moving-pulley and control the gear ratio.
SCIA1846E
SCIA7958E