2010 NISSAN TIIDA valve

P0745 PRESSURE CONTROL SOLENOID ACVT-95
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
J
K L
M A
B
CVT
N
O P
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 TerminalResistance (Ap-
prox.)
Line pressure solenoid valve F46 2 - Ground 3 - 9 Ω
SCIA4686E
Revision: January 20102010 Versa

CVT-96
< SERVICE INFORMATION >[RE0F08B]
P0746 PRESSURE CONTROL SOLENOID A
P0746 PRESSURE CONTROL SOLENOID A
DescriptionINFOID:0000000005397880
• 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 Value in Data Monitor ModeINFOID:0000000005397881
Remarks: Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000005397882
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0746” with CONSULT-III is detected under the following conditions.
- Unexpected gear ratio was detected in the LOW side due to excessively low line pressure.
Possible CauseINFOID:0000000005397883
• Line pressure control system
• Secondary speed sensor
• Primary speed sensor
DTC Confirmation ProcedureINFOID:0000000005397884
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays 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 and select “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
2. Start engine and maintain the following conditions for at least 10 consecutive seconds. Test start from 0
km/h (0 MPH).
ATF TEMP SEN: 1.0 - 2.0 V
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
VEHICLE SPEED: 10 km/h (6 MPH) More than
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
3. If DTC is detected, go to CVT-96, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis ProcedureINFOID:0000000005397885
1.CHECK LINE PRESSURE
Perform line pressure test. Refer to CVT-37, "
Inspections before Trouble Diagnosis".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts. Refer to CVT-37, "
Inspections before Trouble Diagnosis".
2.DETECT MALFUNCTIONING ITEM
Check line pressure solenoid valve. Refer to CVT-94, "
Component Inspection".
Item nameCondition Display value (Approx.)
PRI PRESS “N” position idle 0.4 MPa
Revision: January 20102010 Versa

CVT-98
< SERVICE INFORMATION >[RE0F08B]
P0776 PRESSURE CONTROL SOLENOID B
P0776 PRESSURE CONTROL SOLENOID B
DescriptionINFOID:0000000005397886
• The secondary pressure solenoid valve is included in the control valve assembly.
• The secondary pressure solenoid valve regulates the secondary pressure to suit the driving condition in
response to a signal sent from the TCM.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005397887
Remarks: Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000005397888
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0776” with CONSULT-III is det ected when secondary pressure is too high or too
low compared with the commanded value while driving.
Possible CauseINFOID:0000000005397889
• Harness or connectors (Solenoid circuit is open or shorted.)
• Secondary pressure solenoid valve system
• Secondary pressure sensor
• Line pressure control system
DTC Confirmation ProcedureINFOID:0000000005397890
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
2. Start engine and maintain the following conditions for at least 30 consecutive seconds.
ATF TEMP SEN: 1.0 - 2.0 V
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
VEHICLE SPEED: 10 km/h (6 MPH) More than
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
3. If DTC is detected, go to CVT-98, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis ProcedureINFOID:0000000005397891
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 “SEC PRESS”.
Item name Condition Display value (Approx.)
SEC PRESS “N” position idle 0.8 MPa
Item nameConditionDisplay value (Approx.)
SEC PRESS “N” position idle 0.8 MPa
Revision: January 20102010 Versa

P0776 PRESSURE CONTROL SOLENOID BCVT-99
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
J
K L
M A
B
CVT
N
O P
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:
• Secondary pressure solenoid valve. Refer to CVT-103, "
Component Inspection".
• Line pressure solenoid valve. Refer to CVT-94, "
Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SECONDARY PRES SURE SENSOR SYSTEM
Check secondary pressure sensor system. Refer to CVT-105
.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.DETECT MALFUNCTIONING ITEM
Check the following:
• Power supply and ground circuit for TCM. Refer to CVT-114, "
Wiring Diagram - CVT - POWER".
• The TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.CHECK DTC
Perform CVT-98, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> Replace the transaxle assembly. Refer to CVT-173, "
Removal and Installation".
Revision: January 20102010 Versa

CVT-100
< SERVICE INFORMATION >[RE0F08B]
P0778 PRESSURE CONTROL SOLENOID B
P0778 PRESSURE CONTROL SOLENOID B
DescriptionINFOID:0000000005397892
• The secondary pressure solenoid valve is included in the control valve assembly.
• The secondary pressure solenoid valve regulates the oi
l pump discharge pressure to suit the driving condi-
tion in response to a signal sent from the TCM.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005397893
Remarks: Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000005397894
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0778” 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:0000000005397895
• Harness or connectors (Solenoid circuit is open or shorted.)
• Secondary pressure solenoid valve
DTC Confirmation ProcedureINFOID:0000000005397896
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine and wait at least 5 seconds.
4. If DTC is detected, go to CVT-102, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
ISOLT3 Secondary pressure low - Secondary pressure high 0.8 - 0.0 A
SOLMON3 “N” position idle
0.6 - 0.7 A
When stalled 0.4 - 0.6 A
Revision: January 20102010 Versa

CVT-102
< SERVICE INFORMATION >[RE0F08B]
P0778 PRESSURE CONTROL SOLENOID B
Diagnosis Procedure
INFOID:0000000005397898
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. Read out the value of “ISOLT3”.
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 SECONDARY 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.)
ISOLT3 Secondary pressure low -
Secondary pressure high 0.8 - 0.0 A
Name Connector Terminal
ConditionVoltage
(Approx.)
Secondary
pressure
solenoid
valve E31 2 - ground Release your foot from
the accelerator pedal. 5.0 - 7.0 V
Press the accelerator
pedal all the way down. 3.0 - 4.0 V
SCIA4506E
Solenoid valve Connector Terminal Resistance (Ap-
prox.)
Secondary pressure sole-
noid valve E31 2 - Ground 3 - 9
Ω
SCIA4507E
Revision: January 20102010 Versa

P0778 PRESSURE CONTROL SOLENOID BCVT-103
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
J
K L
M A
B
CVT
N
O P
3. Check resistance between CVT unit harness connector terminal and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK HARNESS BETWEEN TCM AND SECO NDARY PRESSURE SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit harness 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. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK DTC
Perform CVT-100, "
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 >> 1. Repair or replace damaged parts. 2. Replace the transaxle assembly. Refer to CVT-173, "
Removal and Installation" .
Component InspectionINFOID:0000000005397899
SECONDARY PRESSURE SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
Solenoid valve Connector Terminal Resistance (Ap-
prox.)
Secondary pressure sole-
noid valve F46 3 - Ground 3 - 9 Ω
SCIA4688E
Item
Connector Terminal Continuity
TCM connector E312
Ye s
CVT unit harness connec-
tor F46
3
SCIA4689E
Revision: January 20102010 Versa

CVT-104
< SERVICE INFORMATION >[RE0F08B]
P0778 PRESSURE CONTROL SOLENOID B
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 Valve Connector Terminal Resistance (Ap-
prox.)
Secondary pressure so-
lenoid valve F46 3 - Ground
3 - 9 Ω
SCIA4688E
Revision: January 20102010 Versa