2009 NISSAN LATIO service

CVT-268< SERVICE INFORMATION >
[RE0F08B]
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Diagnosis Procedure INFOID:00000000043056741.
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 Condition
Voltage
(Approx.)
Torque con-
verter
clutch sole-
noid valve E31 3 - ground When vehi-
cle cruises
in “D” posi-
tion Lock-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

DTC P0740 TORQUE CONVERTE
R CLUTCH SOLENOID VALVE
CVT-269
< SERVICE INFORMATION >
[RE0F08B] D
E
F
G H
I
J
K L
M A
B CVT
N
O P
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-266, " 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-228, " 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 Inspection INFOID:0000000004305675
TORQUE CONVERTER CLUTCH SOLENOID VALVE 1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector. Item Connector Terminal Continuity
TCM E31 3 Yes
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

CVT-270< SERVICE INFORMATION >
[RE0F08B]
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
3. Check resistance between CVT unit harness connector terminal and ground.
4. If NG, replace the transaxle assembly. Refer to CVT-354," Removal and Installation " .
Solenoid Valve Connector Terminal
Resistance (Ap-
prox.)
Torque converter clutch sole-
noid valve F46 12 - Ground 3 - 9
Ω SCIA4684E

CVT-274< SERVICE INFORMATION >
[RE0F08B]
DTC P0745 LINE PRESS
URE SOLENOID VALVE
Wiring Diagram - CVT - LPSV INFOID:0000000004305687
TCM TERMINALS AND REFERENCE VALUES
Refer to CVT-228, " TCM Terminal and Reference Value " . BCWA0675E

DTC P0745 LINE PRESSURE SOLENOID VALVE
CVT-275
< SERVICE INFORMATION >
[RE0F08B] D
E
F
G H
I
J
K L
M A
B CVT
N
O P
Diagnosis Procedure
INFOID:00000000043056881.
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 PRESSURE CONTROL SOLENOID VALVE A (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 AName Connector Terminal Condition
Voltage
(Approx.)
Pressure
control so-
lenoid
valve A
(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 Terminal
Resistance (Ap-
prox.)
Pressure control solenoid valve A
(Line pressure solenoid valve) E31 1 - ground 3 - 9
Ω SCIA4685E

CVT-276< SERVICE INFORMATION >
[RE0F08B]
DTC P0745 LINE PRESS
URE SOLENOID VALVE
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-354," Removal and Installation " .
4. CHECK HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE A (LINE PRES-SURE 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-273, " 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-228, " 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-354, " Removal and Installation " .
Component Inspection INFOID:0000000004305689
PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector. Solenoid valve Connector Terminal
Resistance (Ap-
prox.)
Pressure control solenoid valve A
(Line pressure solenoid valve) F46 2 - Ground 3 - 9
Ω SCIA4686E
Item Connector Terminal Continuity
TCM E31 1 Yes
CVT unit harness connector F46 2 SCIA4687E

DTC P0745 LINE PRESSURE SOLENOID VALVE
CVT-277
< 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-354," Removal and Installation " .
Solenoid valve Connector Terminal
Resistance (Ap-
prox.)
Pressure control solenoid valve A
(Line pressure solenoid valve) F46 2 - Ground 3 - 9
Ω SCIA4686E

DTC P0778 PRESSURE CONTROL SOLE
NOID B ELECTRICAL (SEC PRES-
SURE SOLENOID VALVE)
CVT-283
< SERVICE INFORMATION >
[RE0F08B] D
E
F
G H
I
J
K L
M A
B CVT
N
O P
Wiring Diagram - CVT - SECPSV
INFOID:0000000004305707
TCM TERMINALS AND REFERENCE VALUES Refer to CVT-228, " TCM Terminal and Reference Value " . BCWA0676E