WARNING: This page is about a different car, the 2009 Dodge Avenger and 2009 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Removing/Installing ECM - 2.0L Diesel
Courtesy of CHRYSLER LLC
The ECM (3) is located in the left side of engine compartment attached to the left inner fender below the air filter housing.