Other Concern: No Engine Braking in Manual 4th (D) Position

OTHER CONCERN: NO ENGINE BRAKING IN MANUAL 4TH (D) POSITION (281)

Possible Component	Reference/Action
281 - ROUTINE
Powertrain Control System
PCM, vehicle wiring harnesses, Shift Solenoid D, Reverse Pressure (RP) switch, Pressure Control Solenoid B	Carry out on-board diagnostic tests. REFER to the INTRODUCTION article in ENGINE PERFORMANCE. Go to PINPOINT TEST A: SHIFT AND TORQUE CONVERTER CLUTCH SOLENOIDS , Go to PINPOINT TEST D: PRESSURE CONTROL (PC) SOLENOIDS (PCA, PCB, PCC) . Repair as required. Clear DTCs, road test and rerun on-board diagnostic test.
Fluid
Incorrect level	Adjust fluid to correct level. refer to TRANSMISSION FLUID LEVEL CHECK .
Main Control
Screws not tightened to specification	Tighten to specification.
Filter damaged, missing	Inspect for damage, repair as necessary.
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.
Coast 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.