No Forward Only

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC ROUTINES - NO FORWARD ONLY

Possible Component	Reference/Action
201 - ROUTINE
Powertrain Control System
PCM, external vehicle wiring harnesses, transmission internal harness, line pressure control (PC-A) solenoid	Carry out on-board diagnostic tests. See INTRODUCTION - GASOLINE article or INTRODUCTION -- 6.0L DIESEL article for diagnosis and testing of the PCM.
	GO to PINPOINT TEST E .
	Repair as required. Clear DTCs, road test and carry out on-board diagnostic test again.
External Shift Cable
Cable system damaged, misaligned	Inspect and repair as necessary.
Incorrect Pressure
Low pressure	Check pressure at line tap.
	Carry out Line Pressure Test. Refer to SPECIAL TESTING PROCEDURES . Follow the pressure diagnosis test as required.
Solenoid Body Assembly
Bolts not tightened to specification	Tighten to specification.
Filter gasket damaged, blown out, leaking	Inspect for damage. If damaged, install a new filter gasket.
Contamination	Disassemble and clean.
PC-A solenoid damaged, stuck or bore damaged. Manual valve damaged, stuck or bore damaged	If damaged or parts are missing, install a new PC-A solenoid or solenoid body assembly. If misassembled, reassemble correctly.
OD OWC
Mechanical diode engaged in both directions, struts missing, OWC damaged	Inspect for rotation in one direction only. Mechanical diode should overrun in the opposite direction. Install new if damaged or fails inspection.
Center Support
Feed bolt not tightened to specification	Tighten to specification.
FWD clutch seal rings damaged	Inspect for damage. Repair as necessary.
Support damaged or leaking	Inspect for damage. Repair as necessary.
Forward Clutch Assembly
Seals, piston damaged	Inspect for damage. Repair as necessary.
Friction elements damaged or worn	Inspect for damage. Repair as necessary.
Return springs damaged	Inspect for damage. Repair as necessary.
Low/Reverse OWC
Mechanical diode engaged in both directions, struts missing, OWC damaged	Inspect for rotation in one direction only. Mechanical diode should overrun in the opposite direction. Install new if damaged or fails inspection.