04 6.6 Won't crank

[Bashby]

I've been working on my brothers 04 6.6 trying to figure out this no crank situation. I found a wiring diagram and tested some things. It appears the ecm is getting a signal from the ignition switch and is not grounding the starter relay. I can manually ground the relay and it will crank but not start. I'm not sure if it's the PASS system or something else. With the key out of the ignition, the red led on the radio flashes every few seconds.
I think my next step is hooking up to a scanner to see what is going on. Is there a tuner or scanner I can buy that will allow me to view computer data to figure this out? Cheap is better but I'd like to hear any options. TIA for any help!

 

[tanman_2006]

I'm not well versed in Dmax electronics but if you want try thetruckstop.us, they have some pretty good Dmax guys.

 

[Bashby]

Thanks, I started a thread there and already have a few responses. Here it is if anyone is interested: http://www.thetruckstop.us/forum/showthread.php?38116-04-Won-t-crank

 

[tanman_2006]

Good to hear. Hope the experts can help. I've never had to dig that deep.