Steering Wheel Return To Center Check

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.

Conduct a road test:

Make both gradual and sudden turns and check the steering wheel return.
At a vehicle speed of approximately 35 km/h (22 mph), turn the steering wheel 90 degrees, hold a few seconds, then release. If the steering wheel then returns 70 degrees or more, the return can be judged satisfactory.
NOTE: There will be a momentary feeling or "heaviness" when the wheel is turned quickly, but this is not abnormal (Oil pump discharge amount is especially apt to be insufficient during idling).

Fig 1: Checking Steering Wheel Center
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.