My right low-beam is out - I have replaced the bulb with a known good bulb and it still doesn't work. I have been reading many, many threads about this, and looking at wiring diagrams, and I think, unfortunately, that my CEM is bad - but they are expensive and I want to be sure before I dig into that project!

So here is where I'm at.

1- Replaced the bulb with a known good bulb - nothing.

2- Checked the fuse, (no. 17) and even swapped it with no. 16 - nothing (and the left still works)

3- Checked for power are the fuse block - it has power ALL the time (as does 16, so I guess that's normal) - even with the key off, but . . .

4- does that mean the CEM is between the fuse block and the bulb? There must be something in between or the headlights would be on all the time, right? Even when the ignition is off.

5- unplugged and re-seated the connector at the headlight nacelle - hope springs eternal, right? Nothing.

6- Used a test light check for power on the car side of the connector - all the pins have power when they should except the Blue-Yellow wire (which, if the wiring diagram is right, is the low-beam).

7- So, something has gone wrong between the fuse block and the bulb - but is it just a broken wire or is it the CEM?

The big question then is where is the CEM in the power stream? Is it:

battery - fuse - CEM - bulb - ground?

Is there some other test that I could perform to check the CEM?

I should add that when I first started getting the "low beam bulb out" message that the bulb would light momentarily when I started the car, and then go out. I thought this was just a quirk of how the bulb had failed - like the filament was touching when it was cold but would pull apart as the bulb heated up.

Thanks