Component testing procedure
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
ILLUMINATION DIMMER SWITCH (14A464) COMPONENT TESTING
| Circuit to test | Connect self powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Interior lamps Circuit | 4 and 5 | Interior lamps | Closed circuit |
| Off | Open circuit | ||
| Illumination dimmer resistor | 4 and 6 | Rotate knob clockwise | Ohmmeter will show smoothly increasing resistance |
| Dome defeat Circuit | 4 and 2 | Dome switch On | 50? ± 1% |
| Dome defeat | 100? ± 29% |