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CVT-122
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P1723 SPEED SENSOR
Check engine speed signal system. Refer to
CVT-81.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts. Refer to EC-1019, "
Component Description".
4.DETECT MALFUNCTIONING ITEM
Check the following:
• Power supply and ground circuit for TCM. Refer to CVT-113
.
• The TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK DTC
Perform CVT-121, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> Replace TCM or transaxle assembly. Refer to CVT-159, "
Removal and Installation", CVT-180,
"Removal and Installation".
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DescriptionINFOID:0000000005928905
Electric throttle control actu NISSAN TIIDA 2011 Service Repair Manual P1726 THROTTLE CONTROL SIGNALCVT-123
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DescriptionINFOID:0000000005928905
Electric throttle control actu](/manual-img/5/57396/w960_57396-1177.png)
P1726 THROTTLE CONTROL SIGNALCVT-123
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P1726 THROTTLE CONTROL SIGNAL
DescriptionINFOID:0000000005928905
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor etc. The actuator sends a signal to the ECM, and ECM sends the signal to TCM with CAN
communication.
On Board Diagnosis LogicINFOID:0000000005928906
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1726” with CONS ULT-III is detected when the electronically controlled throttle for
ECM is malfunctioning.
Possible CauseINFOID:0000000005928907
Harness or connectors
(Sensor circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005928908
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 let it idle for 5 second.
4. If DTC is detected, go to CVT-123, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005928909
1.CHECK DTC WITH ECM
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “ENGINE” with CONSULT-III. Refer to EC-612, "
CONSULT-III
Function (ENGINE)".
OK or NG
OK >> GO TO 2.
NG >> Check the DTC Detected Item. Refer to EC-612, "
CONSULT-III Function (ENGINE)".
• If CAN communication line is detected, go to CVT-56
.
2.CHECK DTC
Perform CVT-123, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 3.
3.DETECT MALFUNCTIONING ITEM
Check the following:
• The TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace TCM. Refer to CVT-159, "Removal and Installation".
NG >> Repair or replace damaged parts.
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![NISSAN TIIDA 2011 Service Repair Manual CVT-124
< SERVICE INFORMATION >[RE0F08B]
P1740 SELECT SOLENOID
P1740 SELECT SOLENOID
DescriptionINFOID:0000000005928910
• The lock-up select solenoid valve is included in the control valve assembly. NISSAN TIIDA 2011 Service Repair Manual CVT-124
< SERVICE INFORMATION >[RE0F08B]
P1740 SELECT SOLENOID
P1740 SELECT SOLENOID
DescriptionINFOID:0000000005928910
• The lock-up select solenoid valve is included in the control valve assembly.](/manual-img/5/57396/w960_57396-1178.png)
CVT-124
< SERVICE INFORMATION >[RE0F08B]
P1740 SELECT SOLENOID
P1740 SELECT SOLENOID
DescriptionINFOID:0000000005928910
• The lock-up select solenoid valve is included in the control valve assembly.
• The lock-up select solenoid valve controls lock-up clutch pressure or forward clutch pressure (reverse brake
pressure).
• When controlling lock-up clutch, the valve is turned OFF. When controlling forward clutch, it is turned ON.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005928911
On Board Diagn osis LogicINFOID:0000000005928912
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1740” with CONSULT-III is detected under the following conditions.
- When TCM compares target value with monitor value and detects an irregularity.
Possible CauseINFOID:0000000005928913
• Lock-up select solenoid valve
• Harness or connectors
(Solenoid circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005928914
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. (Do not start engine.)
2. Select “DATA MONITOR” mode fo r “TRANSMISSION” with CONSULT-III.
3. Start engine and maintain the following conditions for at least 5 consecutive seconds. RANGE: “D” position and “N” position
(At each time, wait for 5 seconds.)
4. If DTC is detected, go to CVT-126, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value
LUSEL SOL OUT Selector lever in “P
” and “N” positions on
Wait at least for 5 seconds with the selector lever
in “R”, “D” and “L” positions off
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P1740 SELECT SOLENOIDCVT-125
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Wiring Diagram - CVT - L/USSVINFOID:0000000005928915
TCM TERMINALS AND REFERENCE VALUES
Refer to CVT-46, "TCM Terminal and Reference Value".
BCWA0680E
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![NISSAN TIIDA 2011 Service Repair Manual CVT-126
< SERVICE INFORMATION >[RE0F08B]
P1740 SELECT SOLENOID
Diagnosis Procedure
INFOID:0000000005928916
1. CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
2. Select “SELECTION FRO NISSAN TIIDA 2011 Service Repair Manual CVT-126
< SERVICE INFORMATION >[RE0F08B]
P1740 SELECT SOLENOID
Diagnosis Procedure
INFOID:0000000005928916
1. CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
2. Select “SELECTION FRO](/manual-img/5/57396/w960_57396-1180.png)
CVT-126
< SERVICE INFORMATION >[RE0F08B]
P1740 SELECT SOLENOID
Diagnosis Procedure
INFOID:0000000005928916
1. CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
2. Select “SELECTION FROM MENU” in “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “LUSEL SOL OUT”.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check voltage between TCM connector terminal and ground.
3. Turn ignition switch OFF.
4. Disconnect the 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 LOCK-UP SELECT 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
LUSEL SOL OUT Selector lever in “P” and “N”
positions
on
Wait at least for 5 seconds
with the selector lever in
“R”, “D” and “L” positions off
Name Connector Terminal ConditionVoltage
(Approx.)
Lock-up
select sole-
noid valve E31 4 - Ground Selector lever in “P” and
“N” positions
Battery
voltage
Wait at least for 5 sec-
onds with the selector le-
ver in “R”, “D” and “L”
positions 0 V
SCIA7955E
Solenoid valve Connector Terminal
Resistance (Ap-
prox.)
Lock-up select solenoid
valve E31 4 - Ground 6 - 19 Ω
SCIA4692E
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3. Check resistance between CVT unit harness connector terminal and ground.
OK or NG
OK >> GO TO 4.
NG NISSAN TIIDA 2011 Service Repair Manual P1740 SELECT SOLENOIDCVT-127
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3. Check resistance between CVT unit harness connector terminal and ground.
OK or NG
OK >> GO TO 4.
NG](/manual-img/5/57396/w960_57396-1181.png)
P1740 SELECT SOLENOIDCVT-127
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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-180,
"Removal and Installation" .
4.CHECK HARNESS BETWEEN TCM AND LOCK-UP SELECT SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect 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. 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-124, "
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 TCM. Refer to CVT-159, "
Removal and Installation" .
Component InspectionINFOID:0000000005928917
LOCK-UP SELECT SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
3. Check resistance between CVT unit harness connector terminal
and ground.
4. If NG, replace the transaxle assembly. Refer to CVT-180,
"Removal and Installation" .
Solenoid valveConnector Terminal Resistance (Ap-
prox.)
Lock-up select solenoid valve F46 13 - Ground 6 - 19 Ω
SCIA4693E
Item Connector Terminal Continuity
TCM E314
Ye s
CVT unit harness connector F46 13
SCIA4694E
Solenoid valveConnector Terminal Resistance (Ap-
prox.)
Lock-up select solenoid valve F46 13 - Ground 6 - 19 Ω
SCIA4693E
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![NISSAN TIIDA 2011 Service Repair Manual CVT-128
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P1745 LINE PRESSURE CONTROL
P1745 LINE PRESSURE CONTROL
DescriptionINFOID:0000000005928918
The line pressure solenoid valve regulates the oil pump discharge pr NISSAN TIIDA 2011 Service Repair Manual CVT-128
< SERVICE INFORMATION >[RE0F08B]
P1745 LINE PRESSURE CONTROL
P1745 LINE PRESSURE CONTROL
DescriptionINFOID:0000000005928918
The line pressure solenoid valve regulates the oil pump discharge pr](/manual-img/5/57396/w960_57396-1182.png)
CVT-128
< SERVICE INFORMATION >[RE0F08B]
P1745 LINE PRESSURE CONTROL
P1745 LINE PRESSURE CONTROL
DescriptionINFOID:0000000005928918
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
On Board Diagn
osis LogicINFOID:0000000005928919
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1745” with CONSULT-III is detected when TCM detects the unexpected line pres-
sure.
Possible CauseINFOID:0000000005928920
TCM
DTC Confirmation ProcedureINFOID:0000000005928921
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. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (cool down the fluid)
3. If DTC is detected, go to CVT-128, "
Diagnosis Procedure" .
Diagnosis ProcedureINFOID:0000000005928922
1.CHECK DTC
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode fo r “TRANSMISSION” with CONSULT-III.
3. Erase self-diagnostic results. Refer to CVT-27, "
OBD-II Diagnostic Trouble Code (DTC)".
4. Turn ignition switch OFF, and wait for 10 seconds or more.
5. Start engine.
6. Confirm self-diagnostic results again. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)" .
Is the
“P1745” displayed?
YES >> Replace TCM. Refer to CVT-159, "Removal and Installation" .
NO >> INSPECTION END
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DescriptionINFOID:0000000005928923
• The step motor is included in the control valve asse NISSAN TIIDA 2011 Service Repair Manual P1777 STEP MOTORCVT-129
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P1777 STEP MOTORCVT-129
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P1777 STEP MOTOR
DescriptionINFOID:0000000005928923
• The step motor is included in the control valve assembly.
• The step motor changes the step with turning 4 coils ON/OF F according to the signal from TCM. As a result,
the flow of line pressure to primary pu lley is changed and pulley ratio is controlled
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005928924
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005928925
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1777” with CONSULT-III is detected under the following conditions.
- When operating step motor ON and OFF, there is no proper change in the voltage of TCM terminal which
corresponds to it.
Possible CauseINFOID:0000000005928926
• Step motor
• Harness or connectors(Step motor circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005928927
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 and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Drive vehicle for at least 5 consecutive seconds.
3. If DTC is detected, go to CVT-131, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name ConditionDisplay value (Approx.)
STM STEP
During driving(−
20) - (+180) step
SMCOIL A
Changes on⇔off.
SMCOIL B
SMCOIL C
SMCOIL D
Revision: May 2010
2011 Versa