scanner and gave the code u0101?

2009 MAZDA 3

150,000 MILES • 2.3L • 4 CYL • 2WD • AUTOMATIC

ROKR_MAZDA

MEMBER
1 POST

My problem started with the start of the check engine and the AT, it was checked with a scanner and gave the code u0101, when reviewing the TCM module they indicated that it received a short circuit.

I would like to know if someone has the diagrams for the identification of the short circuit.

thanks

Feb 11, 2020 at 2:41 PM

JOETECHPRO

✓ASE Certified Mechanic
705 POSTS

Hey ROKR_MAZDA,

I have attached the wiring diagram for the A/T controls.

I have also attached the testing information for the terminals at the TCM plug connector.

Let us know if you need any further information or have any questions about the testing results you get.

Regards, Joe

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Feb 11, 2020 at 3:52 PM

HUDUMASAUD

MEMBER
45 POSTS

Can you also please also indicate the wire to test that is related to the throttle body from the TCM , i have similar issue because even my PRND indicator is not lighting up. It just shows AT and the throttle body misbehaves. Thank you

Oct 22, 2024 at 4:34 PM

STRAILER

✓ASE Certified Mechanic
54,837 POSTS

The throttle body connected to the PCM only. Here is the wiring diagrams and a guide to help you test the wiring.

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

Check out the images (below). Please let us know what happens.

Image (Click to enlarge)

Professional Diagram for 2CarPros Members
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Oct 25, 2024 at 5:10 PM