Electrial connector to AC compressor clutch on 06 3500 diesel - how to disconnect

[navyjoe]

I am trouble-shooting a clutch engage problem. I want to disconnect the connector to the clutch use a 12 v supply and see if it holds. the connector has a red plastic device that apparently has to be removed before you can pull the connector apart. Any hints on "how To".

 

[navyjoe]

Well I did figure it out. That red plastic sliding clip on the connector is strange little beast especially in those tight quarters. Anyway I got it apart only to notice the connector to the clutch has the male prongs deep in the connector. Not a good place to try to jury rig a 12 volt supply into it due to chance of shorting the 12 volt source or damaging the prongs. I hear of others doing it, any hints on how to do it? does the dealer sell a pigtail connector?

 

[navyjoe]

I've run across some very good information on the 06 compressor coil. The dealer does not have this part but it is available from here



http://www.sunairusa.com/news/CC-401EBulletin.pdf



http://www.sunairusa.com/news/HS18Clutch.pdf





Here is a good link about how to fix the clutch coil problem on our trucks from the Cummins forum. Its a long read but skip down to the bottom of the post and see the comment.



http://www.cumminsforum.com/forum/3...diy-fix-ac-compressor-clutches-going-bad.html



Now all I have to do is figure out how to get it all apart. I also think I will have to start a new thread for this info since the title of this one is now off base.

 

[MyDiesel]

While your working in there, you may consider installing a relay or fuse. Someone else told me about a problem they had. Apparently the silinoid that engages the clutch shorted and took out their ecm, a very expensive fix. The one who had the problem I know is a good electronics tech. I don't know what amperage is required for I have not measured and done that preventive step myself yet.

 

[navyjoe]

Adding a 2nd fuse sure would not hurt. The ECM output to the clutch maxes at 3 amps before the output to it turns off. The amount to drive the relay is probably about 1/10 of an amp so putting a 1 amp fuse there should do it. As for the clutch side of the relay I would guess 5 amps should be ok. The maim thing I am trying to find is the connectors so I don't short something trying to jury rig it. I may have located a source for them and when I am sure I will post them.

 

[navyjoe]

OK there is a service bulletin on the connector to the AC clutch. There is a replacement for it from Dodge. It is part number

05135972AA

This is the connector on the wiring harness or engine side.