Functional Check Procedure

FUNCTIONAL CHECK PROCEDURE
Begin with the Functional Check Procedure which provides a general outline of how to diagnose HYDRAMATIC 4T40-E. The Functional Check Procedure will indicate the proper path of diagnosing the transaxle by describing the basic checks and then referencing the locations of the specific checks.
Use on-board diagnostics or a scan tool to see if any transaxle trouble codes have been set. Refer to the appropriate "Diagnostic Trouble Code (DTC)" information and repair the vehicle as directed. After repairing the vehicle, perform the road test and verify that the code has not set again.
If no DTCs have been set and the condition is suspected to be hydraulic, take the vehicle on a road test. Refer to "Road Test Procedure". Road Test Procedure









4T40-E TRANSAXLE FUNCTIONAL CHECK PROCEDURE