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Where is the ECM/PCM located?

Tiny
RHEDD0913
  • MEMBER
  • 2015 MITSUBISHI LANCER
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 75,000 MILES
Attempting to check voltage on the ECM/PCM for the car listed above ES model. The vehicle does not start and has some codes relating to communications such as the U0100. I wanted to check voltage to make sure it does not have a bad ground, while I can locate the ECM I can’t find details on the PCM and did not know where it was located or if it was part of the ECM.
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Thursday, October 13th, 2022 AT 8:16 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
Here is the PCM location and how to replace it if needed and I have included the PCM and engine wiring diagrams so you can see how the system works and which wires to test.

This guide can help as well:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Please let us know what you find. We are interested to see what it is.
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Friday, October 14th, 2022 AT 2:01 PM

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