Nissan Juke Service and Repair Manual : P0744 torque converter
Description
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 malfunction (circuits open or shorted), but also by mechanical malfunction such as control valve sticking, improper solenoid valve operation, etc.
DTC Logic
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 and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
1.CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “DATA MONITOR” in “TRANSMISSION”.
3. Start engine and maintain the following condition for at least 30 seconds.
ACC PEDAL OPEN : More than 1.0/8
RANGE : “D” position
VEHICLE SPEED : Constant speed of more than 40
km/h (25 MPH)
4. If DTC is detected
With GST
Follow the procedure “With CONSULT-III”.
Is “P0744” detected? YES >> Go to TM-217, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
Diagnosis Procedure
1.CHECK LINE PRESSURE
Perform line pressure test. Refer toTM-188, "Inspection and Judgment".
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair or replace damaged parts. Refer to TM-188, "Inspection and Judgment".
2.CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE
Check torque converter clutch solenoid valve. Refer to TM-216, "Component Inspection".
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-248, "Component Inspection".
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK SECONDARY SPEED SENSOR SYSTEM
Check secondary speed sensor system. Refer to TM-209, "DTC Logic".
Is the inspection result normal? YES >> GO TO 5.
NO >> Repair or replace damaged parts.
5.CHECK PRIMARY SPEED SENSOR SYSTEM
Check primary speed sensor system. Refer to TM-207, "DTC Logic".
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace damaged parts.
6.CHECK TCM
Check TCM input/output signals. Refer to TM-164, "Reference Value".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
NO >> Replace the TCM. Refer to TM-280, "Removal and Installation".
P0730 incorrect gear ratio
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn
ignition switch
OFF and wait at least 10 seconds ...
P0745 pressure control solenoid A
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn
ignition switch
OFF and wait at least 10 seconds ...
Other materials:
Locking with key
The power door lock system allows you to lock or unlock all doors simultaneously.
• Turning the driver’s door key cylinder to the front of the vehicle1 will
lock all doors and the lift gate.
• Turning the driver’s door key cylinder once to the rear of the vehicle2 will unlock
t ...
Too much power
Description
CHART 13: TOO MUCH POWER
Diagnosis Procedure
1.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-885, "Diagnosis
Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness ...
P0171 fuel injection system function
DTC Logic
DTC DETECTION LOGIC
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture
ratio can be brought closely to the
theoretical mixture ratio based on the mixture ratio feedback signal from the
A/F sensors 1. The ECM calculates
the necessary compensation to correct th ...
