2010 NISSAN TIIDA valve

CVT-86
< SERVICE INFORMATION >[RE0F08B]
P0740 TORQUE CONVERTER
Diagnosis Procedure
INFOID:0000000005397864
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “ISOLT1”.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
3. Turn ignition switch OFF.
4. Disconnect TCM connector.
5. Check if there is continuity between the connector terminal and
ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN TCM AND TORQ UE CONVERTER CLUTCH SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit harness connector.
Item name Condition Display value (Approx.)
ISOLT1 Lock-up OFF
0.0 A
Lock-up ON 0.7 A
Name Connector Terminal ConditionVoltage
(Approx.)
To r q u e c o n -
verter
clutch sole-
noid valve E31 3 - ground When vehi-
cle cruises
in “D” posi-
tionLock-up ON 6.0 V
Lock-up OFF 1.0 V
SCIA7954E
Solenoid valve Connector Terminal Resistance
(Approx.)
Torque converter clutch so-
lenoid valve E31 3 - Ground 3 - 9 Ω
SCIA1970E
Revision: January 20102010 Versa

P0740 TORQUE CONVERTERCVT-87
< SERVICE INFORMATION > [RE0F08B]
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3. Check continuity between TCM connector terminal and CVT unit harness connector terminal.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and CVT assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
3. Check resistance between CVT unit harness connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK DTC
Perform CVT-84, "
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 dam age or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
Component InspectionINFOID:0000000005397865
TORQUE CONVERTER CLUTCH SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
Item Connector Terminal Continuity
TCM E313
Ye s
CVT unit harness connec-
tor F46
12
SCIA4683E
Solenoid Valve Connector Terminal Resistance (Ap-
prox.)
Torque converter clutch sole-
noid valve F46 12 - Ground 3 - 9 Ω
SCIA4684E
Revision: January 20102010 Versa

CVT-88
< SERVICE INFORMATION >[RE0F08B]
P0740 TORQUE CONVERTER
3. Check resistance between CVT unit harness connector terminal
and ground.
4. If NG, replace the transaxle assembly. Refer to CVT-173,
"Removal and Installation" .
Solenoid ValveConnector Terminal Resistance (Ap-
prox.)
Torque converter clutch sole-
noid valve F46 12 - Ground 3 - 9
Ω
SCIA4684E
Revision: January 20102010 Versa

P0744 TORQUE CONVERTERCVT-89
< SERVICE INFORMATION > [RE0F08B]
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P0744 TORQUE CONVERTER
DescriptionINFOID:0000000005397866
• The torque converter clutch solenoid valve is included in the control valve assembly.
• This malfunction is detected when the torque converter clutch does not lock-up as instructed by the TCM.
This is not only caused by electrical malfunction (cir cuits open or shorted), but also by mechanical malfunc-
tion such as control valve sticking, improper solenoid valve operation, etc.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397867
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397868
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0744” with CONSULT-III is detected under the following conditions.
- When CVT cannot perform lock-up even if electrical circuit is good.
- When TCM compares difference value with slip revolution and detects an irregularity.
Possible CauseINFOID:0000000005397869
• Torque converter clutch solenoid valve
• Hydraulic control circuit
DTC Confirmation ProcedureINFOID:0000000005397870
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine and maintain the following condition for at least 30 seconds. ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
[Vehicle speed: Constant speed of more than 40 km/h (25 MPH)]
4. If DTC is detected go to CVT-89, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis ProcedureINFOID:0000000005397871
1.CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle.
4. Check if there is a great difference between “E NG SPEED SIG” and “PRI SPEED SEN”. (Lock-up ON.)
Item name Condition Display value
ENG SPEED SIG Engine running Closely matches the tachometer reading.
PRI SPEED SEN During driving (lock-up ON) Approximately matche s the engine speed.
Revision: January 20102010 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-173, "
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: January 20102010 Versa

P0745 PRESSURE CONTROL SOLENOID ACVT-91
< SERVICE INFORMATION > [RE0F08B]
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P0745 PRESSURE CONTROL SOLENOID A
DescriptionINFOID:0000000005397872
• The line pressure solenoid valve is included in the control valve assembly.
• The line pressure solenoid valve regulates the oil pum p discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397873
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397874
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0745” with CONSULT-III is detected under the following conditions.
- TCM detects an improper voltage drop when it tries to operate the solenoid valve.
- When TCM compares target value with monitor value and detects an irregularity.
Possible CauseINFOID:0000000005397875
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Line pressure solenoid valve
DTC Confirmation ProcedureINFOID:0000000005397876
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Start engine and wait at least 5 seconds.
3. If DTC is detected, go to CVT-93, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
ISOLT2 Release your foot from the accelerator pedal.
0.8 A
Press the accelerator pedal all the way down. 0.0 A
Revision: January 20102010 Versa

P0745 PRESSURE CONTROL SOLENOID ACVT-93
< SERVICE INFORMATION > [RE0F08B]
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Diagnosis ProcedureINFOID:0000000005397878
1. CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “ISOLT2”.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
3. Turn ignition switch OFF.
4. Disconnect TCM connector.
5. Check if there is continuity between connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK LINE PRESSURE SOLENOID VALVE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3.CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
Item name Condition Display value (Approx.)
ISOLT2 Release your foot from the
accelerato
r pedal. 0.8 A
Press the accelerator ped-
al all the way down. 0.0 A
Name Connector Terminal
ConditionVoltage
(Approx.)
Line pres-
sure sole-
noid valve E31 1 - ground Release your foot from
the accelerator pedal. 5.0 - 7.0 V
Press the accelerator
pedal all the way down. 1.0 - 3.0 V
SCIA2348E
Solenoid valve
Connector TerminalResistance (Ap-
prox.)
Line pressure solenoid valve E31 1 - ground 3 - 9 Ω
SCIA4685E
Revision: January 20102010 Versa

CVT-94
< SERVICE INFORMATION >[RE0F08B]
P0745 PRESSURE CONTROL SOLENOID A
3. Check resistance between CVT unit harness connector terminal
and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace the transaxle assembly. Refer to CVT-173,
"Removal and Installation".
4. CHECK HARNESS BETWEEN TCM AND LINE PRESSURE SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector and TCM connector.
3. Check continuity between TCM connector terminal and CVT unit harness connector terminal.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and CVT assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK DTC
Perform CVT-91, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6.CHECK TCM
1. Check TCM terminals and reference values. 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-173, "
Removal and Installation".
Component InspectionINFOID:0000000005397879
LINE PRESSURE SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
Solenoid valveConnector Terminal Resistance (Ap-
prox.)
Line pressure solenoid valve F46 2 - Ground 3 - 9 Ω
SCIA4686E
ItemConnector Terminal Continuity
TCM E311
Ye s
CVT unit harness connector F46 2
SCIA4687E
Revision: January 20102010 Versa