Shift Quality Quick-Learn Procedure (Grand CHEROKEE & Liberty): Overview

This procedure quickly optimizes shift quality. Procedure must be performed after disconnecting battery or loss of voltage supply to TCM, replacing TCM, transmission internal components, solenoid assembly or torque converter. DRBIII® scan tool with proper cartridge must be used to perform shift quality quick-learn procedure.

The following conditions must be met when performing shift quality quick-learn procedure: oil temperature must be greater than 60°F (16°C), brakes must be applied when indicated, engine speed greater than 500 RPM, throttle angle less than 3 degrees, gearshift lever must be in Neutral and moved only when indicated, gearshift lever must remain in Overdrive as indicated until DRBIII® indicates procedure is completed.

It is imperative that vehicle be shifted into OD with engine running and ensure fluid level is correct. This will purge air in clutch circuits to prevent erroneous clutch volume values, which could cause poor initial shift quality.

If unused replacement TCM is installed on vehicle with engine at normal operating temperature, shift quality quick-learn procedure will cause TCM to indicate a cold oil temperature. Oil temperature must be monitored with DRBIII®. If oil temperature is less than 60°F (16°C), allow engine to idle until oil temperature is greater than 60°F (16°C). If oil temperature is greater than 200°F (94°C), allow transmission to cool until oil temperature is less than 200°F (94°C).