What was found
UPON RELEASING TILLER STEERING, PEDAL STEER LIGHT CAME ON AND RUDDER STEERING DISABLED. IN ORDER TO MAINTAIN NOSEWHEEL STEERING, IT IS NECESSARY TO ENGAGE TILLER CONSTANTLY. ABORTED TAKEOFF. RESET TILLER WHEEL. TAXIED AIRCRAFT OPERATING AIRCRAFT TILLER AND PEDAL STEER, OPS CHECKS GOOD AT THIS TIME.