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Old Dec 2, 2010 | 08:10 PM
  #1  
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PCM Toast

Is there anyway to confirm a pcm is toast without installing a new one?
 
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Old Dec 2, 2010 | 08:22 PM
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You could take the cover off and look for fried components. You could also send it to DP Tuner and they could do a stock flash. If they could not program it that would be a sign it's bad. I don't know if they have any pcm diagnostics. You should check with them. I just had to replace mine because the postal service lost it. I paid $150 at a junk yard. You could also try carparts.com. You'll need the pcm code if you replace it.
 
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Old Dec 2, 2010 | 08:32 PM
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What happening that you think you fried your PCM?
 
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Old Dec 2, 2010 | 09:21 PM
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no wts light, no wif light, no power to fuel pump or fuse #19, all fuses are good, replaced cps, ruled out fuel heater. if there is anything else i'm open to suggestions. Thanks in advance.
 
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Old Dec 2, 2010 | 09:40 PM
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Originally Posted by peglegger
no wts light, no wif light, no power to fuel pump or fuse #19, all fuses are good, replaced cps, ruled out fuel heater. if there is anything else i'm open to suggestions. Thanks in advance.
Are you geting power to fuse #24?
 
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Old Dec 2, 2010 | 10:05 PM
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I just pulled out my pcm, and what did i find. A super chip plug into it. i have had this truck for 2 years with a edge evo plugged into the port. I tried to change to the performance tune when i first bought the truck with no differance in hp. Whats next? pull the chip and put the pcm back in. please some one throw me a bone hear. Thanks
 
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Old Dec 2, 2010 | 10:14 PM
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Cheak these fuses as well, Fuse#s-6,28,24,27.23.17,12,2,18,15,10,19,29,14,16,4,26,8, 13,CB25,22,21,20 all these fuses are feed by a fuseable link. Fuseable link A and J will be a 12 ga Gray wire.

Would also cheak Batteries, Disconnect them from each other and then cheak.
 
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Old Dec 2, 2010 | 10:21 PM
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Originally Posted by peglegger
I just pulled out my pcm, and what did i find. A super chip plug into it. i have had this truck for 2 years with a edge evo plugged into the port. I tried to change to the performance tune when i first bought the truck with no differance in hp. Whats next? pull the chip and put the pcm back in. please some one throw me a bone hear. Thanks
While you got it out split the case of the PCM and see if you see any damage. If not put it back togeather and reinstall and see what happens.
 
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Old Dec 2, 2010 | 10:43 PM
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Just return everything to stock and see what's up.
 
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Old Dec 3, 2010 | 07:08 PM
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Well Guys, I plugged the pcm back in and it was the same, plugged in the edge evo and it programmed the pcm back to the stock using the hex file saved on the edge. Dash lit up, fuel pump worked, problem solved. Thanks everybody, it's alot easier to dig deeper into problem knowing you have people like yourselves there to lean on. Cheers P.S. I'm guessing I should take it in to get a re-flash done?
 
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Old Dec 3, 2010 | 10:10 PM
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Wow, i'd say u need a DP tuner...
 
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Old Dec 4, 2010 | 10:31 AM
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Glad to hear you got it fixed!
 
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