Clearing Transmission Adaptive Pressure

Updating TAP information is a learning function of the PCM designed to maintain acceptable shift times. It is not recommended that TAP information be reset unless one of the following repairs has been made:

• Transaxle overhaul or replacement.
• Repair or replacement of an apply or release component (clutch, band, piston, servo).
• Repair or replacement of a component or assembly which directly affects line pressure.

Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the PCM will need to relearn TAP values. Transaxle performance may be affected as new TAPs are learned. The PCM must also relearn TAP values when the PCM or the transaxle is replaced.