A/C Control Head Illumination Cannot Be Regulated

TEST CONDITIONS
- Fuses OK (check according to wiring diagram.
- Ambient temperature above 10° C (50° F).
- Engine at normal operating temperature.
- Vehicle not parked in direct sunlight.

A/C Control Head Illumination Cannot Be Regulated, Chart 1 Of 2:

Chart 1 of 2

A/C Control Head Illumination Cannot Be Regulated, Chart 2 Of 2:

Chart 2 of 2