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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
O: DTC P0741 TORQUE CONVERTER CLUTCH CIRCUIT PERFORMANCE OR
STUCK OFF
DTC DETECTING CONDITION:
• Lock up clutch malfunction
• Valve anchoring
TROUBLE SYMPTOM:
No lock-up occurs. (After engine is warmed-up)
Step
1
CHECK DTC OF TCM.
2
CHECK DTC OF TCM.
1) Perform clear memory mode. <Ref. to
5AT(diag)-19, CLEAR MEMORY MODE,
OPERATION, Subaru Select Monitor.>
2) Read DTC
3
CHECK INHIBITOR SWITCH CIRCUIT.
Diagnose according to DTC P0705 procedure.
4
CHECK STOP LIGHT SWITCH CIRCUIT.
Diagnose according to DTC P0719 and P0724
procedure.
5
CHECK ATF TEMPERATURE SENSOR CIR-
CUIT.
Diagnose according to DTC P0712, P0713,
P1716 and P1717 procedure.
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is any of following DTC
detected? / AT CAN Communi-
cation Circuit / Engine Speed
Input Circuit / Input/Turbine
Speed Sensor Circuit / Torque
Converter Turbine 2 Speed
Signal Circuit 2 Malfunction
Is DTC displayed?
Is there any trouble?
Is there any trouble?
Is there any trouble?
5AT(diag)-57
Yes
Perform the diag-
Go to step 2.
nosis according to
each DTC.
Perform the diag-
Go to step 3.
nosis according to
DTC.
Repair or replace
Go to step 4.
the inhibitor switch
circuit.
Repair or replace
Go to step 5.
the stop light
switch circuit.
Repair or replace
There are mal-
the ATF tempera-
functions in TCM,
ture sensor circuit.
TCM connector
poor contact, or
transmission
assembly mechan-
ical malfunction.
No
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