OSC - Transmission Drive Modes: Notes

The DRIVE mode allows control of 3 transaxle parameters. Each mode/parameter has a unique set of vehicle operating requirements that the technician must meet before being allowed to operate OSC. The recommended procedure, when using the DRIVE mode, is to control one parameter at a time.

The DRIVE mode allows the technician to carry out the following functions on the transaxle:

• GEAR - allows upshifts or downshifts.
• TCC - engages or disengages the torque converter clutch.
• FIRM_SFT - commands a higher control pressure during upshift only.

Electronic Pressure Control solenoid A (EPC) for this transaxle cannot directly be controlled during DRIVE mode testing. Pressures may be raised during an upshift via the firm shift control function (FIRM_SFT).