From VIN S5220000

Circuit Testing-Power Mirror Motors:

1. Remove the triangular trim panels adjacent to each mirror.
2. Disconnect the power mirror connectors C506 or C606.
3. Check for continuity between terminals of the mirror connector as indicated.

NOTE
The resistance between terminals 1 and 2, and between terminals 2 and 4 can vary from 50 to 500 Ohms on good mirror motors. The resistance will decrease with use of the mirror:

4. If continuity is not as specified, replace the mirror assembly.