Nissan Teana J32. Manual — part 1177
TM-232
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0744 A/T TCC S/V FUNCTION (LOCK -UP)
P0744 A/T TCC S/V FUNCTION (LOCK -UP)
Description
INFOID:0000000003806410
This malfunction is detected when the torque converter clutch does not lock-up as instructed by the TCM. This
is not only caused by electrical malfunctions (circuits open or shorted), but also by mechanical malfunctions
such as control valve sticking, improper solenoid valve operation, etc.
DTC Logic
INFOID:0000000003806411
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Data Monitor” mode for “TRANSMISSION”.
3.
Start engine and maintain the following condition for at least 30 seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0744 A/T TCC S/V FNCTN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-35, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003806412
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-308, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-308, "Inspection and Judgment"
.
2.
CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE
1.
Turn ignition switch OFF.
2.
Disconnect CVT unit connector.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0744
A/T TCC S/V FNCTN
• CVT cannot perform lock-up
even if electrical circuit is
good.
• TCM detects as irregular by
comparing reference value
with slip rotation.
• There is a big difference be-
tween engine speed and pri-
mary speed sensor when
TCM lock-up signal is on.
• Torque converter clutch sole-
noid valve
• Hydraulic control circuit
ACC PEDAL OPEN
: More than 1.0/8
RANGE
: “D” position
VEHICLE SPEED
: Constant speed of more than 40 km/h (25 MPH)
P0744 A/T TCC S/V FUNCTION (LOCK -UP)
TM-233
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
3.
Check torque converter clutch solenoid valve. Refer to
TM-233, "Component Inspection (Torque Con-
verter Clutch Solenoid Valve)"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK LOCK-UP SELECT SOLENOID VALVE
Check lock-up select solenoid valve. Refer to
TM-233, "Component Inspection (Lock-up Select Solenoid
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check input speed sensor (primary speed sensor) system. Refer to
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection (Torque Converter Clutch Solenoid Valve)
INFOID:0000000003806413
1.
CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
Component Inspection (Lock-up Select Solenoid Valve)
INFOID:0000000003806414
1.
CHECK LOCK-UP SELECT SOLENOID VALVE
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
12
3.0 – 9.0
Ω
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
13
17.0 – 38.0
Ω
TM-234
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0745 LINE PRESSURE SOLENOID VALVE
P0745 LINE PRESSURE SOLENOID VALVE
Description
INFOID:0000000003806415
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 the signal transmitted from the TCM.
DTC Logic
INFOID:0000000003806416
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Start engine and wait at least 5 seconds.
3.
Select “Self Diagnostic Results” mode for “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0745 L/PRESS SOL/CIRC” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-35, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003806417
1.
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 vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TCM AND CVT UNIT [PRESSURE CONTROL SOLENOID VALVE A (LINE
PRESSURE SOLENOID VALVE)] (PART 1)
1.
Disconnect CVT unit connector.
2.
Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0745
L/PRESS SOL/CIRC
• Normal voltage is not applied
to solenoid due to open or
short circuit.
• TCM detects as irregular by
comparing target value with
monitor value.
• Harness or connectors
(Solenoid circuit is open or
shorted.)
• Pressure control solenoid
valve A (line pressure sole-
noid valve)
TCM vehicle side harness connector
Ground
Resistance (Approx.)
Connector
Terminal
F23
40
3.0 – 9.0
Ω
P0745 LINE PRESSURE SOLENOID VALVE
TM-235
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK HARNESS BETWEEN TCM AND CVT UNIT [PRESSURE CONTROL SOLENOID VALVE A (LINE
PRESSURE SOLENOID VALVE)] (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000003806418
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the transaxle assembly. Refer to
.
TCM vehicle side harness connector
CVT unit vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
F23
40
F24
2
Existed
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
F23
40
Not existed
CVT unit harness connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
2
3.0 – 9.0
Ω
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