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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2585 (Automatic Transmission - 6R140 (TORQSHIFT(R)6)) -- F250-F550 Super Duty) >> Diagnosis And Testing >> Torque Converter Diagnosis >> Torque Converter Operation Test

Torque Converter Operation Test

WARNING: This page is about a different car, the 2011 Ford Pickup, 2011 Ford F550 Super Duty, 2011 Ford F450 Super Duty, and 2011 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

The Torque Converter Operation Test verifies that the Torque Converter Clutch (TCC) control system and the torque converter are operating correctly.

  1. Connect a scan tool to the vehicle and check for DTCs.
  2. Bring the engine to normal operating temperature by driving the vehicle at highway speeds in the (D) position.
  3. After normal operating temperature is reached, maintain a constant speed of about 56 km/h (35 mph) in 5th gear for 10 seconds.
  4. Release the accelerator pedal and monitor the scan tool Throttle Position (TP) 1 voltage to approximately 1.25 volts or 25% throttle.
  5. Monitor the TCC and RPM PID. The torque converter should unlock and engine rpm should increase before the 5-4 shift occurs.
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