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PCM - How scan reads ?

Old Feb 14, 2017 | 05:18 AM
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Default PCM - How scan reads ?

How or what is telling a scan reader... the vin # of the
donor vehicle, where I got my replcment engine from.?

The black box pcm sitting on top of radiator overflow
has the same numbers on the sticker so i am assuming they
didn't change the box. ??

The top right of image below shows Vin # from the donor blazer
where engine came from.
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Last edited by cdtek101; Feb 14, 2017 at 05:26 AM.
Old Feb 14, 2017 | 07:50 AM
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Not sure unless innova remembers vin from old scans. It should be reading the VIN programmed into the PCM. You may want to discuss with person who installed the engine.
 

Last edited by LesMyer; Feb 14, 2017 at 09:27 AM.
Old Feb 14, 2017 | 10:15 AM
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VIN should be stored in the PCM/ECM
 
Old Feb 14, 2017 | 08:21 PM
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Originally Posted by Lesmyer
Not sure unless innova remembers vin from old scans. It should be reading the VIN programmed into the PCM. You may want to discuss with person who installed the engine.
Yep gonna get more detail he is changing my Belt Tensioner Friday eve, so I will have more time to chat him up then.
 
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