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the Wtec 2 troubleshooting manual, look back in the thread I think NDT linked it. Appendix B gives the clutch and system pressures values.

remarks 1. The output speed sensor is an tonal type that counts the rotations. If the sensor resistance is out of range it will generate a fault during the ECU BITE on startup. 2. The ECU under voltage and constant power ups and power downs can cause corruption of data, intermittent unrelated...

Take out your keypad/ecu then ring the runs for the turbine and output speed sensors for the correct range. If not in the range it should just be a sensor/wiring repair. For parts I suggest going to an Allison dealer, it may be the same price or a little more expensive but they should have the...

I would suggest checking the ohms of your speed sensors. Your codes 55 56 and 25 give an indication of a speed sensor issue. The tranmission controller knows the correct ratios of the speed of the input vs output. If the input and output ratio is out of range or non existent it may give a...