AUTOMATIC TRANSMISSION (DIAGNOSTICS)(4AT) > Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0741 TORQUE CONVERTER CLUTCH CIRCUIT PERFORMANCE OR STUCK OFF

AUTOMATIC TRANSMISSION (DIAGNOSTICS)(4AT) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P0741 TORQUE CONVERTER CLUTCH CIRCUIT PERFORMANCE OR STUCK OFF

DTC DETECTING CONDITION:

• Lock up clutch malfunction

• Sticky valve

TROUBLE SYMPTOM:

No lock-up occurs.

STEP	CHECK	YES	NO
1.CHECK ENGINE SPEED SIGNAL. 1) Idle the engine. 2) Read the data of “Engine Speed” using Subaru Select Monitor.	Does the value of “Engine Speed” almost match the value of the tachometer located in the combination meter?		Check the engine speed signal circuit.
2.CHECK AT TURBINE REVOLUTION SPEED SENSOR CIRCUIT. Perform the diagnosis according to DTC P0715.	Is there any trouble?	Check the torque converter turbine speed sensor circuit.
3.CHECK AT VEHICLE SPEED SENSOR CIRCUIT. Perform the diagnosis according to DTC P0720.	Is there any trouble?	Check the harness of the front vehicle speed sensor circuit, and repair the defective part.	There are malfunctions in TCM, TCM connector poor contact, or transmission assembly mechanical malfunction.