Drive Test - Pressure Added for Engagements and Upshifts

WARNING: This page is about a different car, the 2012 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The output state control values for HRSH_SHFT to command a slight or moderate increase in hydraulic pressure to test for harsh engagements and upshifts are as follows:

0 or OFF - TCM in normal pressure control for shifts and engagements and output state control is cancelled
1 or ON - Commands TCM to moderately increase hydraulic pressure during engagements and upshifts

Setting HRSH_SFT to 1 or ON allows the technician to moderately increase the pressure when performing engagements such as P-R, P-D, N-R, N-D, R-D and when performing automatic upshifts. This can provide additional diagnostic information to help the technician determine whether the electronic pressure control system is providing at least limited control (a normal shift would become harsh). Using output state control to control HRSH_SHFT [1 or ON] should make a softer engagement or shift more normal and an already normal shift or engagement harsher by slightly increasing the pressure. This test should only be used to provide additional diagnostic information and should not be the only scan tool or test to determine a faulty electronic or hydraulic component.