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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2585 (Automatic Transmission - 6R140 (TORQSHIFT(R)6)) -- F250-F550 Super Duty) >> Description And Operation >> System Components >> Hydraulic System Schematic >> Fail-Safe

Hydraulic System Schematic: Fail-Safe

WARNING: This page is about a different car, the 2011 Ford Pickup, 2011 Ford F550 Super Duty, 2011 Ford F450 Super Duty, and 2011 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

If an electronic, hydraulic, or mechanical transmission malfunction occurs, the PCM or TCM  defaults to Fail-Safe mode and turns off any current to the transmission. This leaves PARK, REVERSE, NEUTRAL and 5th gear with an unlocked TCC  as the only available gears. With SSB  , SSE  and the LPC  solenoid being normally high solenoids, 5th gear with full line pressure is achieved hydraulically when current is removed from the transmission.

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