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Home >> Subaru >> 2015 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Continuously Variable Transmission (Diagnostics)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P2758: Torque Converter Clutch Pressure Control Solenoid Control Circuit Stuck On >> General Description >> Diagnostic Method

Diagnostic Method

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
The number of intersections between Engine speed and Turbine shaft speed
The TCM determines the normal condition only the state below
(All secondary parameters satisfied
and measured turbine shaft speed
for time.)
4 times or more
0 rpm or less
0.1 sec

Time needed for diagnosis:  Immediately

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.