CCRM or fan motor, any ways to tell which failed?

[DDakRT]

My fan have stopped coming on, regardless of it's regular driving, with the a/c on, or the KOEO test, so that rules out the ECT. But now is there a way to tell if it's the fan motor that failed or is it the CCRM.

What exactly does the CCRM do, how does it control the radiator fan's operation?

 

[Rockledge]

Jump 12V to the fan, see if it runs.

 

[DDakRT]

Any specific way to do that without potentially shocking myself...?

 

[Rockledge]

Unplug the harness connector to the fan, and put 12V to pin that is associated with the Dark Blue (DB) wire, and put Ground to the pin associated with the Black (BL) wire. Be careful, the fan may in fact start running.

 

[DVJ38]

I had this problem a little while ago. I replaced the fan motor, the CCRM, and the thermostat and temp sender were both new. It turned out to be a wire chaifing against the engine strut from the main harness. I paid 200 to find that out from ford. They made all the new components work though!

These should help you out!

This was part 1 of the troubles: http://www.shoforum.com/showthread.php?t=44632&highlight=fan+motor

This was part 2 of the troubles: http://www.shoforum.com/showthread.php?t=45722&highlight=fan+motor

If you can't figure it out after trying things in those posts, I'll be glad to help you out.

 

[naval-avi8or]

Good Luck getting shocked by 12 VDC.

 

[Shoaz]

Good Luck getting shocked by 12 VDC.

Yeah, you can test a 9V on your tongue, 12V isn't gonna do much unless you're soaking wet or something. Car batteries aren't to be trifled with, but just jumping a fan shouldn't be too hazardous.

 

[SHOZ123]

Just unplug the fan and see if you have 12V and a ground at the plug when the fan should be on.

 

[khanartist]

Any specific way to do that without potentially shocking myself...?

My favorite way to do this is using the 12 DC battery for my cordless drill. That battery is the ultimate in usefullness when it comes to testing circuits, etc.....