FIRM_SOFT In DRIVE MODE

NOTE: Firmer shifts indicate pressure control system is working at higher pressure. The best test for isolating pressure control system problems is PCA IN BENCH MODE .

FIRM_SOFT in DRIVE MODE is used to increase pressure during an upshift to determine whether pressure control system is functioning correctly. Vehicle requirements for this mode are as follows:

VSS and TR sensor are operational with no DTCs.
Engine is running.
Gearshift lever is in OD position (Overdrive).
Vehicle speed is greater than 2 MPH.
TCC cannot be forced ON using OSC mode (PID "OSCTCC" not equal to ON).

To perform FIRM_SOFT in DRIVE MODE, follow operating instructions from NGS tester menu screen:

Select "Output State Control".
Select "Trans-Drive Mode".
Select "PIDs" to be monitored.
Monitor all selected PIDs during test.
Select "Parameters - FIRM_SOFT".
Select "ON" to turn firm shift mode on.
Press "SEND" to send command.
Select "OFF" to turn firm shift mode off.
Press "SEND" to send command.
Select "XXX" to cancel at any time.
Press "SEND" to send command.