Engagement Concern: No Forward and No Reverse

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

ENGAGEMENT CONCERN: NO FORWARD AND NO REVERSE

Possible Component	Reference/Action
207 - ROUTINE
Powertrain Control System
PCM, vehicle wiring harnesses, Pressure Control Solenoid B (PC B)	Carry out on-board diagnostic tests. See INTRODUCTION - GASOLINE article for diagnosis and testing of the PCM. GO to PINPOINT TEST D . Repair as required. Clear DTCs, road test and rerun on-board diagnostic test.
Fluid
Incorrect level	Adjust to the correct level. Refer to TRANSMISSION FLUID LEVEL CHECK in this article.
Condition	Carry out Fluid Condition Check. Refer to PRELIMINARY INSPECTION in this article.
Shift Cable/Digital TR Sensor
Cable system or digital TR sensor damaged, misaligned	Inspect and repair as necessary. Refer to TRANSMISSION RANGE (TR) SENSOR ADJUSTMENT in this article.
Main Control
Screws not tightened to specification	Tighten screws to specification.
Separator plate damaged	Inspect for damage. If damaged, install a new separator plate.
Contamination	Disassemble and clean.
Valve, springs damaged, misassembled, missing, stuck or bore damaged	If damaged or parts are missing, install new main control assembly. If misassembled, reassemble correctly. DO NOT stone, file or sand valves. This will remove the anodized finish and may result in further main control or transmission damage.
Filter damaged, missing	Inspect for damage, repair as necessary.
Input Shaft
Damaged	Inspect for damage. Repair as necessary.
Fluid Pump Assembly
Screws not tightened to specification	Tighten screws to specification.
Gasket damaged	Inspect for damage. If damaged, install a new gasket.
Porosity, cross leaks, ball missing, plugged hole	Inspect for damage. If damaged, repair as necessary.
Pump gears cracked and/or seized	Inspect for damage. Install a new pump.
Flow control valves, springs, or seals damaged, stuck or not assembled correctly	Inspect for damage. Install a new seal or flow control valve.
OD Planetary Assembly
Planetary damaged	Inspect for damage. Repair as necessary.
Center Shaft Assembly
Damaged. One-way clutch damaged	Inspect for damage. Repair as necessary.
Forward Clutch Assembly
Seals, piston damaged	Inspect for damage. Repair as necessary.
Check ball damaged, missing, not seating, off location	Inspect for mislocation, poor seating, damage. Install a new cylinder.
Friction elements damaged or worn	Inspect for damage. Repair as necessary.
Return springs damaged	Inspect for damage. Repair as necessary.
Bronze seal ring or bearing damaged	Inspect for damage. Repair as necessary.
Forward Planetary Assembly
Planetary damaged	Inspect for damage. Repair as necessary.
Reverse Planetary Assembly
Planetary damaged	Inspect for damage. Repair as necessary.
Output Shaft
Damage	Inspect for damage. Repair as necessary.
Torque Converter
Damaged flexplate or adapter plate	Remove the transmission. Inspect for damage. Refer to TORQUE CONVERTER in the General Procedures portion of this article. If the torque converter fails to pass the criteria or is damaged, install a new or remanufactured torque converter.
Damaged impeller hub Damaged turbine hub
Direct One-Way Clutch
Worn, damaged or assembled incorrectly	Inspect for damage. Repair as necessary.