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3 error codes

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Old Jun 5, 2012 | 02:46 PM
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3 error codes

I have 3 error codes that I can't seem to figure out.
P0603 - internal control module kam error.
P0605 - internal control module rom error.
P1271 - cylinder 1 - high to low side open.

I have checked all fuses and connections going to pcm. They all look good. I have ohmed the injector was under 5 ohms. Swapped solenoids with 3. Still tripping #1. Ohmed high and low side from 42 pin connector to valve cover, checks out good.
What else should I check before I have to buy a pcm?
 
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Old Jun 5, 2012 | 02:49 PM
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Thanks in advance.
 
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Old Jun 5, 2012 | 03:29 PM
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Clear your codes and rescan and see what ones come back. KAM is keep alive memory usually comes from having both batteries disconneted.
 
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Old Jun 5, 2012 | 03:49 PM
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I have cleared the codes several times. They keep coming back. I have the batteries disconnected for couple months while I rebuilt the motor. I also had the pcm out to get the code to order the f5. I hooked the f5 up before I rehooked the batteries after the rebuild. Not sure if that would make a difference.
 
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Old Jun 5, 2012 | 04:16 PM
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Originally Posted by jt371
I hooked the f5 up before I rehooked the batteries after the rebuild. Not sure if that would make a difference.
Did you make sure you got the pins cleaned good before you plugged the F5 in?
 
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Old Jun 5, 2012 | 04:28 PM
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Yes I did. I was wondering if I cleaned them to good.
 
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Old Jun 5, 2012 | 04:35 PM
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Well that can be a problem too. Give Jody at DP a call and see what he has to say.
 
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Old Jun 5, 2012 | 05:18 PM
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I just talked to jason at DP. He said the 603 and 605 are because of the chip. Still not sure on the 1271.
 
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Old Jun 5, 2012 | 05:38 PM
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Have you got a way to do a buzz test?
 
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Old Jun 5, 2012 | 05:56 PM
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Yes. I have a snap-on scanner. The old brick. I did a buzz test, no codes.
 
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