Harsh Reverse Only

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

DIAGNOSTIC ROUTINES - HARSH REVERSE ONLY

Possible Component	Reference/Action
203 - ROUTINE
Powertrain Control System	CARRY OUT On-Board Diagnostic (OBD) tests. REFER to the INTRODUCTION article for diagnosis and testing of the PCM. For diagnosing SSPCE , GO to PINPOINT TEST A . For diagnosing PCA , GO to PINPOINT TEST E . REPAIR as required. CLEAR the DTCs, ROAD TEST the vehicle and RERUN the OBD test.
PCM, external vehicle wiring harnesses, transmission internal harness, Pressure Control Solenoid A (PCA), low/reverse solenoid Shift Solenoid Pressure Control E (SSPCE), Power Take-Off (PTO) input to PCM
Selector Lever Cable	INSPECT and REPAIR as necessary. REFER to AUTOMATIC TRANSMISSION EXTERNAL CONTROLS article.
Cable system damaged, misaligned
Incorrect Line Pressure	CHECK pressure at line tap. CARRY OUT Line Pressure Test. REFER to SPECIAL TESTING PROCEDURES in this service information. Follow the pressure diagnosis test as required.
High pressure
Solenoid Body Assembly
Bolts not tightened to specification	TIGHTEN to specification.
Filter gasket damaged	INSTALL a new filter gasket.
Contamination	DISASSEMBLE and CLEAN. If damaged or parts are missing, INSTALL a new PCA or solenoid body assembly. If misassembled, correctly reassemble.
PCA , SSPCE damaged, stuck or bore damaged. Manual valve or solenoid damaged, stuck or bore damaged
Fluid Pump Assembly
Bolts not tightened to specification	TIGHTEN to specification.
Gasket damaged	INSTALL a new gasket.
Porosity, cross leaks, cup plug missing, plugged hole	REPAIR as necessary.
Pump gears and/or gear pocket damaged	INSTALL a new pump. REPAIR as necessary. If damaged, INSTALL a new seal or pump assembly.
Control valves, springs or seal damaged, stuck or not assembled correctly
Center Support
Feed bolt not tightened to specification	TIGHTEN to specification.
Forward clutch seal rings damaged	REPAIR as necessary. REPAIR as necessary.
Center support damaged or leaking	REPAIR as necessary. REPAIR as necessary.
Direct Clutch Assembly
Seals, piston damaged	REPAIR as necessary.
Friction elements damaged or worn	REPAIR as necessary. REPAIR as necessary.
Return springs damaged	REPAIR as necessary. REPAIR as necessary.
Low/Reverse Clutch Assembly
Seals, piston damaged	REPAIR as necessary.
Filtered orifice damaged, missing, not seating, off location	INSTALL a new case.
Friction elements damaged or worn	REPAIR as necessary.
Return springs damaged	REPAIR as necessary. REPAIR as necessary.
Snap ring for One-Way Clutch (OWC) and/or return spring not seated or damaged	REPAIR as necessary. REPAIR as necessary.