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Ask Chris (aka - Moose) Your Own Question
Chris (aka - Moose)
Chris (aka - Moose), Technician
Category: Heavy Equipment
Satisfied Customers: 112
Experience:  16 years of experience
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2004 international 4400 a/c problems. Truck came in /c not

Customer Question

2004 international 4400 a/c problems. Truck came in for a/c not working. First thing I noticed was the compressor clutch was coming apart, replaced compressor. Still doesn't work, no power to clutch. long story short, Ive replaced compressor, hi pressure switch, both cycling switches, pcm, had pcm programmed at dealer, swapped control head, ohmed every wire from switches and clutch to pcm, a/c command wire from head to pcm, power and grounds all good to head, still nothing. No check a/c light on dash, unless I unplug the control head.
Completely stumped at this point. Im not getting anything power or ground wise from head to pcm, not sure if the signal is supposed to be power or ground, my diagram doesn't say.
I don't have diamond logic software to see what the pcm is doing.
Submitted: 12 months ago.
Category: Heavy Equipment
Expert:  Daniel Wilson replied 12 months ago.

Hi, It's Dan. I just answered this question on your other duplicate post but for some reason it is under a different customer name or e mail than the other. Go to your other question link.