2011 NISSAN TIIDA clutch system

PRECAUTIONSCVT-11
< SERVICE INFORMATION > [RE0F08B]
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• When connecting or disconnecting pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
When connecting pin connectors make sure that there are not
any bends or breaks on TCM pin terminal.
• Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly or
not. CVT-46, "
TCM Terminal and Reference Value".
• After performing each TROUBL E DIAGNOSIS, perform “DTC
Confirmation Procedure”.
If the repair is completed the DTC should not be displayed in
the “DTC Confirmation Procedure”.
• Always use the specified br and of CVT fluid. Refer to MA-14, "
Flu-
ids and Lubricants".
• Use lint-free paper, not cloth rags, during work.
• After replacing the CVT fluid, dispose of the waste oil using the methods prescribed by law, ordinance, etc.
Service Notice or PrecautionINFOID:0000000005928726
CVT FLUID COOLER SERVICE
If CVT fluid contains friction material (clutches, brakes , etc.), or if an CVT is replaced, inspect and clean the
CVT fluid cooler mounted in the radiator or replace the radiator. Flush cooler lines using cleaning solvent and
compressed air after repair. For CVT fluid cooler cleaning procedure, refer to CVT-15, "
CVT Fluid Cooler
Cleaning". For radiator replacement, refer to CO-40.
OBD-II SELF-DIAGNOSIS
• CVT self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the malfunction indi cator lamp (MIL). Refer to the table on CVT-48, "
CONSULT-III
Function (TRANSMISSION)" for the indicator used to display each self-diagnostic result.
• The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM memo- ries.
Always perform the procedure on CVT-27, "
OBD-II Diagnostic Trouble Code (DTC)" to complete the
repair and avoid unnecessary blinking of the MIL.
For details of OBD-II, refer to EC-541, "
Introduction".
• Certain systems and components, especially those re lated to OBD, may use the new style slide-lock-
ing type harness connector. For description and how to disconnect, refer to PG-65
.
ATFTEMP COUNT Conversion Table INFOID:0000000005928727
SEF291H
MEF040DA
SEF217U
Revision: May 2010 2011 Versa

CVT SYSTEMCVT-19
< SERVICE INFORMATION > [RE0F08B]
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CVT SYSTEM
Cross-Sectional View - RE0F08BINFOID:0000000005928733
1. Converter housing 2. Oil pump3. Forward clutch
4. Reverse brake 5. Planetary carrier6. Primary pulley
7. Steel belt 8. Sun gear9. Side cover
10. Internal gear 11. Secondary pulley12. Differential case
13. Final gear 14. Idler gear15. Reduction gear
16. Output gear 17. Parking gear18. Input shaft
19. Torque converter
SCIA8015E
Revision: May 2010 2011 Versa

CVT SYSTEMCVT-21
< SERVICE INFORMATION > [RE0F08B]
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Hydraulic Control SystemINFOID:0000000005928735
TCM FunctionINFOID:0000000005928736
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.
AWDIA0768GB
SENSORS (or SIGNAL)
⇒TCM
⇒ACTUATORS
Transmission range 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
Secondary pressure sensor Shift 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-III co
mmunication
line
Duet-EA control
CAN system
On board diagnosis Step motor
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
Revision: May 2010
2011 Versa

CVT SYSTEMCVT-25
< SERVICE INFORMATION > [RE0F08B]
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Lock-up and Select ControlINFOID:0000000005928741
• The torque converter clutch piston in the torque conv erter is engaged to eliminate torque converter slip to
increase power transmission efficiency.
• The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid
valve, which is controlled by a signal from TCM. The torque converter clutch control valve engages or
releases the torque converter clutch piston.
• When shifting between “N” (“P”) ⇒“D” (“R”), torque converter clutch solenoid controls engagement power of
forward clutch and reverse brake.
• The lock-up applied gear range was expanded by locking up the torque converter at a lower vehicle speed than conventional CVT
models.
TORQUE CONVERTER CLUTCH AND SELECT CONTROL VALVE CONTROL
Lock-up and Select Control System Diagram
Lock-up Released
In the lock-up released state, the torque converter clutch control valve is set into the unlocked state by the
torque converter clutch solenoid and the lock-up apply pressure is drained.
In this way, the torque converter clutch piston is not coupled.
Lock-up Applied
In the lock-up applied state, the torque converter clutch control valve is set into the locked state by the torque
converter clutch solenoid and lock-up apply pressure is generated.
In this way, the torque converter clutch piston is pressed and coupled.
Select Control
When shifting between “N” (“P”) ⇒“D” (“R”), optimize the operating pressure on the basis of the throttle posi-
tion, the engine speed, and the secondary pulley (out put) revolution speed to lessen the shift shock.
Control ValveINFOID:0000000005928742
FUNCTION OF CONTROL VALVE
SCIA1958E
AWDIA0778GB
Revision: May 2010 2011 Versa

CVT-26
< SERVICE INFORMATION >[RE0F08B]
CVT SYSTEM
Name
Function
Torque converter regulator valve Optimizes the supply pressure for the torque converter depending on driving conditions.
Pressure regulator valve Optimizes the discharge pressure from the oil pump depending on driving conditions.
TCC control valve • Activates or deactivate the lock-up.
• Lock-up smoothly by opening lock-up operation excessively.
TCC solenoid valve Controls the TCC control valve or select control valve.
Shift control valve Controls flow-in/out of line pressure from the primary pulley depending on the stroke dif-
ference between the stepping motor and the primary pulley.
Secondary valve Controls the line pressure from the secondary pulley depending on operating conditions.
Clutch regulator valve Adjusts the clutch operating pressure depending on operating conditions.
Secondary pressure solenoid valve Controls the secondary valve.
Line pressure solenoid valve Controls the line pressure control valve.
Step motor Controls the pulley ratio.
Manual valve Transmits the clutch operating pressure to each circuit in accordance with the selected
position.
Select control valve Engages forward clutch, reverse brake smoothly depending on select operation.
Select switch valve Switches torque converter clutch solenoid valve control pressure use to torque converter
clutch control valve or select control valve.
Lock-up select solenoid valve Controls the select switch valve.
Revision: May 2010 2011 Versa

CVT-90
< SERVICE INFORMATION >[RE0F08B]
P0744 TORQUE CONVERTER
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK LINE PRESSURE
Perform line pressure test. Refer to CVT-37, "
Inspections before Trouble Diagnosis".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts. Refer to CVT-37, "
Inspections before Trouble Diagnosis".
3.DETECT MALFUNCTIONING ITEM
Check the following:
• Torque converter clutch solenoid valve. Refer to CVT-87, "
Component Inspection".
• Lock-up select solenoid valve. Refer to CVT-127, "
Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SECONDARY SPEED SENSOR SYSTEM AND PRIMARY SPEED SENSOR SYSTEM
Check secondary speed sensor system and primary speed sensor system. Refer to CVT-76
, CVT-72.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK DTC
Perform CVT-89, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6.CHECK TCM
1. Check TCM input/output signals. Refer to CVT-46, "
TCM Terminal and Reference Value".
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> 1. Repair or replace damaged parts. 2. Replace the transaxle assembly. Refer to CVT-180, "
Removal and Installation".
Item nameCondition Display value
ENG SPEED SIG Eng ine runningClosely matches the ta-
chometer reading.
PRI SPEED SEN During driving (lock-up ON) Approximately matches
the engine speed.
Revision: May 2010
2011 Versa

EC-480
< ECU DIAGNOSIS >[HR16DE]
ECM
P0460 0460 FUEL LEV SEN SLOSH
— 2×AEC-346
P0461 0461 FUEL LEVEL SENSOR — 2×BEC-347
P0462 0462 FUEL LEVL SEN/CIRC — 2×BEC-349
P0463 0463 FUEL LEVL SEN/CIRC — 2×BEC-349
P0500 0500
VEH SPEED SEN/CIRC*6—2×BEC-351
P0506 0506 ISC SYSTEM — 2×BEC-353
P0507 0507 ISC SYSTEM — 2×BEC-355
P0603 0603 ECM BACK UP/CIRCUIT — 2×BEC-357
P0605 0605 ECM — 1 or 2× or — B EC-359
P0607 0607 ECM —1 (A/T)
2 (M/T) ×
(A/T)
— (M/T) B
EC-361
P0643 0643 SENSOR POWER/CIRC — 1×BEC-362
P0705 0705 T/M RANGE SENSOR A — 2×BAT- 9 0
P0710 0710
FLUID TEMP SENSOR A*9—2×BAT- 9 5
P0720 0720
OUTPUT SPEED SENSOR*6—2×BAT- 1 0 0
P0725 0725 ENGINE SPEED — 2×BAT- 1 0 5
P0731 0731
1GR INCORRECT RATIO*9—2×BAT- 1 0 9
P0732 0732
2GR INCORRECT RATIO*9—2×BAT- 11 2
P0733 0733
3GR INCORRECT RATIO*9—2×BAT- 11 5
P0734 0734
4GR INCORRECT RATIO*9—2×BAT- 11 8
P0740 0740 TORQUE CONVERTER — 2×BAT- 1 2 3
P0744 0744 TORQUE CONVERTER — 2×BAT- 1 2 8
P0745 0745 PC SOLENOID A — 2×BAT- 1 3 3
P0750 0750 SHIFT SOLENOID A — 1×BAT- 1 3 8
P0755 0755 SHIFT SOLENOID B — 1×BAT- 1 4 3
P0850 0850 P-N POS SW/CIRCUIT — 2×BEC-366
P1148 1148 CLOSED LOOP-B1 — 1×AEC-371
P1217 1217 ENG OVER TEMP — 1×BEC-372
P1225 1225 CTP LEARNING-B1 — 2——EC-376
P1226 1226 CTP LEARNING-B1 — 2——EC-378
P1421 1421 COLD START CONTROL — 2×AEC-380
P1610 1610 LOCK MODE — 2——BL-257
P1611 1611 ID DISCORD, IMMU-ECM — 2——BL-257
P1612 1612 CHAIN OF ECM-IMMU — 2——BL-257
P1613 1613 ECM INT CIRC-IMMC — 2——BL-257
P1614 1614 CHAIN OF IMMU-KEY — 2——BL-257
P1615 1615 DIFFERENCE OF KEY — 2——BL-257
P1715 1715 IN PULY SPEED — 2——EC-382
P1760 1760 OVER CLUTCH SOLENOID — 2 ×BAT- 1 4 8
P1805 1805 BRAKE SW/CIRCUIT — 2——EC-383
P2100 2100 ETC MOT PWR-B1 — 1×BEC-387
P2101 2101 ETC FNCTN/CIRC-B1 — 1×BEC-391
DTC*1
Items
(CONSULT-III screen terms) SRT
code Trip MIL Permanent
DTC
group*
4
Reference page
CONSULT-III
GST*
2ECM*3
Revision: May 2010 2011 Versa

AUTOMATIC SPEED CONTROL DEVICE (ASCD)EC-523
< SERVICE INFORMATION > [MR18DE]
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System DescriptionINFOID:0000000006341703
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set
vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric thro ttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE i ndicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE indicato r in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET indicator in combination meter illuminates.)
ACCELERATE OPERATION
If the RESUME/ACCELERATE switch is depressed during cruise control driving, increase the vehicle speed
until the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exis t, cruise operation will be canceled.
• CANCEL switch is pressed
• More than two switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
• Brake pedal is depressed
• Clutch pedal is depressed or gear position is changed to the neutral position (M/T models)
• Selector lever is changed to N, P, R position (A/T and CVT models)
• Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
• Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may blink slowly.
When the engine coolant temperature decreases to t he normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
• Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
Sensor Input signal to ECM ECM functionActuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator
Stop lamp switch
Brake pedal operation
ASCD clutch switch (M/T models) Clutch pedal operation
ASCD steering switch ASCD steering switch operation
Park/neutral position (PNP) signal Gear position
ABS actuator and electric unit (con-
trol unit) Vehicle speed*
Combination meter
TCM Powertrain revolution*
Revision: May 2010 2011 Versa