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asd relay clicking,no crank,help

  #1  
Old 03-22-2015, 09:17 AM
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Default asd relay clicking,no crank,help

99 300m no crank,asd relay clicking,checked for a code,didn't get a actual code number but the scanner said ,,,,single board engine controller communication bus failure, ,has anyone here seen this or knows what it means,,I replaced the pcm a yr ago(aftermarket),any info would help,,thanks
 
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Old 03-22-2015, 01:31 PM
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possible pcm possible wire issue the BUS is a commutation network to allow all the computer to talk to each other.
 
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Old 03-22-2015, 04:52 PM
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Correct,I understand what the bus does,I did get a schematic of the wiring and unplugged every sensor and switch involved w that com connector,yet the relay continues to click,I'm wondering if it would be worth a few bucks to hit a junkyard and pickup a use pcm and plug it in just to see if the clicking goes away,
 
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Old 03-22-2015, 08:23 PM
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do you have a gray key?
 
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Old 03-24-2015, 06:39 PM
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Originally Posted by CHRYSLER TECH View Post
do you have a gray key?
Yes I have two and both do the same thing,,I would think if I had a skim issue I would get e code though
 
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Old 03-25-2015, 08:47 AM
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prob the pcm is faulty it is a remain unit. and unless you have a real good scanner things like a skim code will not show up.
 
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