Harsh Forward Only

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DIAGNOSTIC ROUTINES - HARSH FORWARD ONLY

Possible Component	Reference/Action
204 - ROUTINE
Powertrain Control System
PCM, external vehicle wiring harnesses, transmission internal harness	Carry out on-board diagnostic tests. See INTRODUCTION - GASOLINE and/or INTRODUCTION -- 6.0L DIESEL articles for diagnosis and testing of the PCM. Repair as required. Clear DTCs, road test and rerun on-board diagnostic test.
External Shift Cable
Cable system damaged, misaligned	Inspect and repair as necessary.
Incorrect Pressure
High 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	Inspect for damage. If damaged, install a new filter gasket.
Contamination	Disassemble and clean.
Solenoids damaged, stuck or bore damaged. Manual valve or solenoid damaged, stuck or bore damaged	If damaged or parts are missing, install a new solenoid body assembly. If misassembled, reassemble correctly.
Fluid Pump Assembly
Bolts not tightened to specification	Tighten to specification.
Gasket damaged	Inspect for damage. Repair as necessary. If damaged, install a new gasket.
Porosity, cross leaks, cup plug missing, plugged hole	Inspect for damage. Repair as necessary.
Pump gears and/or gear pocket damaged	Inspect for damage. Repair as necessary. If damaged, install a new pump.
Control valves, springs or seal damaged, stuck or not assembled correctly	Inspect for damage. Repair as necessary. If damaged, install a new seal or pump assembly.
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 Clutch Assembly
Seals, piston damaged	Inspect for damage. Repair as necessary.
Filtered orifice damaged, missing, not seating, off location	Inspect for mislocation, poor seating, damage. Install a new case.
Friction elements damaged or worn	Inspect for damage. Repair as necessary.
Return springs damaged	Inspect for damage. Repair as necessary.
Snap ring for OWC and/or return spring not seated or damaged	Inspect for damage. Repair as necessary.