For 1990-2009 cars

The control solenoid (w/body and TCM) valve assembly cleaning procedure is a specific software based routine, which resides in the TCM. This procedure is activated by the scan tool and is used to cycle the solenoids and valves in the control solenoid valve assembly in an attempt to dislodge debris and free up the valves after a performance diagnostic trouble code (DTC) has set. When the cleaning procedure is completed, the DTC enable criteria should be run again, to see if the DTC concern has been corrected.

1. Operate the transmission to achieve 70°-90°C (158°-194°F).
2. With a scan tool, select the Service Cleaning Procedure. Initiate the cleaning procedure.
3. When the cleaning procedure is completed, shut OFF the ignition for 30 seconds.
4. Restart the engine and operate the vehicle based on the criteria specified in Conditions for Running the DTC.
5. Observe if the applicable DTC or DTCs have run and passed to verify if the cleaning procedure was effective.