September 30: LEMON manuals is back up on a temporary server! Slowness is possible
DTC U1109: Column SW LIN timeout: Notes
WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Before replacing the ECU, ensure that the communication circuit is normal.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.