Page 97 of 3051
Wiring Diagram Ð AT Ð TCVNLAT0207
YAT179
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE
EURO-OBD
Wiring Diagram Ð AT Ð TCV
AT-96
Page 98 of 3051

Diagnostic ProcedureNLAT0056
1 CHECK GROUND CIRCUIT
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 9 and ground.
Resistance:
10-20W
OK or NG
OK©GO TO 2.
NG©Replace CVT assembly.
2 CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to ªOFFº position.
2. Disconnect TCM harness connector.
3. Check continuity between terminal 9 and TCM harness connector terminal 3.
Continuity should exist.
SAT683JA
If OK, check harness for short to ground and short to power.
4. Reinstall any part removed.
OK or NG
OK©GO TO 3.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
3 CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-94.
OK or NG
OK©INSPECTION END
NG©1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE
EURO-OBD
Diagnostic Procedure
AT-97
Page 99 of 3051
SAT684JA
Component InspectionNLAT0057TORQUE CONVERTER CLUTCH SOLENOID VALVENLAT0057S01+For removal, refer to AT-206.
Resistance CheckNLAT0057S0101+Check resistance between two terminals.
Solenoid valve Terminal No.Resistance
(Approx.)
Torque converter
clutch solenoid
valve9Ground of TCC
solenoid valve10-20W
SAT685JA
Operation CheckNLAT0057S0102+Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground of TCC
solenoid valve.
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE
EURO-OBD
Component Inspection
AT-98
Page 100 of 3051

DescriptionNLAT0061The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent
from the TCM.
The line pressure duty cycle value is not consistent when the
closed throttle position switch is ªONº. To confirm the line
pressure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is
ªOFFº.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NLAT0061S01Remarks: Specification data are reference values.
Monitor item Condition Specification
Line pressure solenoid valve dutySmall throttle opening
(Low line pressure)
¯
Large throttle opening
(High line pressure)Approximately 4%
¯
Approximately 94%
NOTE:
The line pressure duty cycle value is not consistent when the closed throttle position switch is ªONº. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is ªOFFº.
TCM TERMINALS AND REFERENCE VALUENLAT0061S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard (Approx.)
1 R/WLine pressure
solenoid valve
When releasing accelerator pedal
after warming up engine.2.8V
When depressing accelerator pedal
fully after warming up engine.1.4V
2 P/BLine pressure
solenoid valve
(with dropping
resistor)When releasing accelerator pedal
after warming up engine.11.0V
When depressing accelerator pedal
fully after warming up engine.4.0V
ON BOARD DIAGNOSIS LOGICNLAT0061S03
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: L/PRESS SOL/CIRC
TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.+Harness or connectors
(The solenoid circuit is open or shorted.)
+Line pressure solenoid valve
: P0745
: MI Code No. 0745
DTC P0745 LINE PRESSURE SOLENOID VALVEEURO-OBD
Description
AT-99
Page 101 of 3051
SAT250K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
=NLAT0061S04NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
SAT255K
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for ªENGINEº with CONSULT-II.
2) Depress accelerator pedal completely and wait at least 5 sec-
onds.
If the check result is ªNGº, go to ªDiagnostic Procedureº,
AT-102.
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P0745 LINE PRESSURE SOLENOID VALVEEURO-OBD
Description (Cont'd)
AT-100
Page 102 of 3051
Wiring Diagram Ð AT Ð LPSVNLAT0209
YAT180
DTC P0745 LINE PRESSURE SOLENOID VALVEEURO-OBD
Wiring Diagram Ð AT Ð LPSV
AT-101
Page 103 of 3051

Diagnostic ProcedureNLAT0062
1 CHECK GROUND CIRCUIT
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 8 and ground.
Resistance:
2.5-5W
OK or NG
OK©GO TO 2.
NG©Check the following items:
+Line pressure solenoid valve
Refer to ªComponent Inspectionº, AT-103.
+Harness of terminal cord assembly for short or open
2 CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to ªOFFº position.
2. Disconnect TCM harness connector.
3. Check resistance between terminal 8 and TCM harness connector terminal 2.
Resistance:
11.2 - 12.8W
OK or NG
OK©GO TO 3.
NG©Check the following items:
+Dropping resistor
Refer to ªComponent Inspectionº, AT-103.
+Harness for short or open between TCM terminal 2 and terminal cord assembly (Main
harness)
3 CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to ªOFFº position.
2. Check continuity between terminal 8 and TCM harness connector terminal 1.
Continuity should exist.
If OK, check harness for short to ground and short to power.
3. Reinstall any part removed.
OK or NG
OK©GO TO 4.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
4 CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-100.
OK or NG
OK©INSPECTION END
NG©1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
DTC P0745 LINE PRESSURE SOLENOID VALVEEURO-OBD
Diagnostic Procedure
AT-102
Page 104 of 3051
SAT686JA
Component Inspection=NLAT0063LINE PRESSURE SOLENOID VALVENLAT0063S01+For removal, refer to AT-206.
Resistance CheckNLAT0063S0101+Check resistance between two terminals.
Solenoid valve Terminal No.Resistance
(Approx.)
Line pressure
solenoid valve8Ground of line
pressure solenoid
valve2.5-5W
SAT687JA
Operation CheckNLAT0063S0102+Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground of line
pressure solenoid valve.
SAT232K
DROPPING RESISTORNLAT0063S02+Check resistance between two terminals.
Resistance:
11.2 - 12.8W
DTC P0745 LINE PRESSURE SOLENOID VALVEEURO-OBD
Component Inspection
AT-103