How To Diagnose: Inspection

WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

Sight and sound checks
Check relay operation, blower motor rotation, light illumination, etc. Listen for a "click" when some relay covers are pushed down.

Fig 1: Listening For Click When Some Relay Covers Pushed Down
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Simple checks
For example, if a headlight does not come on and a faulty fuse or poor grounding is suspected, replace the fuse with a new one. Or use a jumper wire to ground the light to the body. Determine which part(s) is/are responsible for the problem.

Fig 2: Checking Fuse
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Checking with instruments
Use an appropriate instrument in an adequate range and read the indication correctly.

Fig 3: Checking With Instruments
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.