Nissan Sentra B18 (2020-2025) Service Manual: P0740-00 Torque Converter
Dtc Description
DTC Description
DTC DETECTION LOGIC
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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|
P0740 |
00 |
TORQUE CONVERTER (Torque Converter Clutch Circuit/Open) |
Diagnosis condition |
Power supply voltage ≥ 10 V |
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Signal |
Torque converter clutch solenoid drive signal |
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Threshold |
Solenoid drive circuit is diagnosed as open |
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Diagnosis delay time |
0.2 seconds |
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POSSIBLE CAUSE
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Harness or connector
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Torque converter clutch solenoid
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TCM
FAIL-SAFE
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Start is slow
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Acceleration is slow
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Lock-up is not performed
-
Stop/start system prohibited
DTC CONFIRMATION PROCEDURE
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PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 10 seconds, then perform the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V.
>>GO TO 2.
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CHECK DTC DETECTION
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Start the engine.
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Drive the Nissan Sentra vehicle and maintain the following conditions for 10 seconds or more.
Shift position
: "D" position
CVT fluid temperature
: 20 °C (68 °F) or more
Nissan Sentra Vehicle speed
: 40 km/h (25 MPH) or more
CAUTION:
Be careful of the driving speed.
-
Stop the Nissan Sentra vehicle.
-
Check the DTC.
Is "P0740-00" detected?
YES >>Proceed to Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: INSPECTION END
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Diagnosis Procedure
Diagnosis Procedure
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CHECK TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT
Check torque converter clutch solenoid circuit. Refer to Diagnosis Procedure.
Is the inspection result normal?
YES>>Replace TCM. Refer to Removal and Installation.
NO >>Repair or replace damaged parts.
Other materials:
Fuel Pump
Component Inspection
Component Inspection
CHECK FUEL PUMP
Turn ignition switch OFF.
Disconnect “fuel level sensor
unit and fuel pump” harness connector.
Check the resistance between
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Diagnosis System (air Bag)
Description
Description
CAUTION:
Never use electrical test equipment on any
circuit related to the SRS unless instructed in this Service
Manual. SRS wiring harnesses can be identified by yellow and/or
orange harnesses or harness connectors.
...
Door Lock Function
System Diagram
System Diagram
System Description
System Description
Only when pressing the door request switch it is
possible to lock and unlock the door by carrying the Intelligent
Key.
INPUT SIGNAL AND OUTPUT SIGNAL
...