Transmission Control Module (TCM) location

2004 MAZDA 3
78,984 MILES • 2.3L • 4 CYL • 2WD • AUTOMATIC
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BACKYARDBANGERS
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  • 1 POST
My car listed above (sedan) is having transmission problems. I have diagnosed it and the code reads that it is the TCM but I cannot locate it. I have done some research and just about everything I found tells me it is located below the battery. To my surprise it is not. So my question is. Would you happen to know where it is located?
Aug 25, 2018 at 8:37 PM
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STRAILER
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Hello,

Your car does not have a TCM because it is interrogated into the PCM. Here is the transmission wiring diagrams so you can see for yourself and the location of the PCM. Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Aug 27, 2018 at 4:47 AM
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PETE89
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So how do i fix the problem?
Jun 5, 2019 at 1:24 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,694 POSTS
Lets run the codes first to see what the poster is talking about. here is a guide:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
Jun 5, 2019 at 9:34 AM
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