I just recently picked up a 2004 jeep laredo with the check engine light and the error code 'p0505' which I assumed would be a simple fix, picked up a new IAC, dropped it in and started the jeep. The idle went from about 700rpm to 1,500(700 being the old iac). So i double checked the old one and noticed that the little piston was 'open' quite aways. So I dropped it back in and the idle went down, so I checked the wires and the left/right wires on the edges of the plug have no power. Now before I go and think about picking up a new PCM, I'd like to at least check the wiring at the plug to the pcm for power (to see if the power wire is damaged)

So, my question is: Does anyone have/know where I can find a diagram for the pcm? (or can just show me which wire cluster has the IAC's wires)

 

Moved to grand cherokee tech

 

Thanks for moving to the proper thread.

Does no one know anything about the ecm/pcm's wiring?

 

Welcome to CF. If you go on this free site, and fill in your details, it should give you the info you need. >http://www.jeep4x4center.com/knowled...rce=cj#service