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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 P1758: Cold Start Torque Converter Clutch Pressure Control Solenoid Control Circuit Stuck On >> General Description >> Execution Condition

Execution Condition

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.
Secondary parameters Execution condition
12 V battery system voltage 10 V or more
Commanded duty of torque converter clutch pressure control solenoid 0% or less
Vehicle speed 1.9 MPH or more
Engine speed 1000 rpm or more
and
5000 rpm or less
Transmission fluid temperature -10 degC or more
and
120 degC or less
Engine coolant temperature -10 degC or more
Transmission range Drive
Engine torque At or more than N.m values in Table 1 
Cold Start Operation
All above conditions satisfied for time. 0.1 sec or more
TURBINE SHAFT SPEED SPECIFICATION

  Difference between current engine torque calculated by ECM and torque demanded by driver (N.m)
0 60 90 100
Turbine shaft speed (rpm) 0 45 45 45 45
500 45 45 45 45
1000 48 48 48 48
1500 52 52 52 52
2000 55 55 55 55
2500 60 60 60 60
3000 100 100 100 100
3500 250 250 250 250
4000 358 358 358 358
4500 443 443 443 443
5000 512 512 512 512
5500 512 512 512 512
6000 512 512 512 512
6500 512 512 512 512
7000 512 512 512 512