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CVT
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DTC P0745 LINE PRESSURE SOLENOID VALVE
Description INFOID:0000000004305682
• The pressure control solenoid valve A (line pressure solenoid valve) is included in the control valve assem- bly.
• The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pres-
sure to suit the driving condition in response to a signal sent from the TCM.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004305683
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004305684
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0745 L/PRESS SOL/CIRC” 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 Cause INFOID:0000000004305685
• Harness or connectors (Solenoid circuit is open or shorted.)
• Pressure control solenoid valve A (Line pressure solenoid valve)
DTC Confirmation Procedure INFOID:0000000004305686
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 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-275, " 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
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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
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![NISSAN LATIO 2009 Service Repair Manual DTC P0745 LINE PRESSURE SOLENOID VALVE
CVT-275
< SERVICE INFORMATION >
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Diagnosis Procedure
INFOID:00000000043056881.
CHECK INPUT SIGNAL
With CONSULT-III
1. NISSAN LATIO 2009 Service Repair Manual DTC P0745 LINE PRESSURE SOLENOID VALVE
CVT-275
< SERVICE INFORMATION >
[RE0F08B] D
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Diagnosis Procedure
INFOID:00000000043056881.
CHECK INPUT SIGNAL
With CONSULT-III
1.](/manual-img/5/57359/w960_57359-1218.png)
DTC P0745 LINE PRESSURE SOLENOID VALVE
CVT-275
< SERVICE INFORMATION >
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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
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![NISSAN LATIO 2009 Service Repair Manual 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 NISSAN LATIO 2009 Service Repair Manual 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](/manual-img/5/57359/w960_57359-1219.png)
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
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DTC P0745 LINE PRESSURE SOLENOID VALVE
CVT-277
< SERVICE INFORMATION >
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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
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Diagnosis Procedure " .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis Procedure INFOID:0000000004305695Inspections before Trouble Diagnosis " .
OK or NG OK >> GO TO 2.
NG >> Repair or replace damaged parts. Refer to CVT-219, " Inspections before Trouble Diagnosis " .
Item name Condition Display value (Approx.)
PRI PRESS “N” position idle 0.4 MPa
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CVT
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Inspection " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM AND INPUT SPEED ,
CVT-254 .
OK or NG OK >> GO TO 4.
NG >> Repair or replace damaged parts. Wiring Diagram - CVT - POWER " .
• 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. DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> Replace the transaxle assembly or TCM. Refer to CVT-354, " Removal and Installation " .
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Diagnosis Procedure " .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis Procedure INFOID:0000000004305701