Where is the TCM located?

2005 MAZDA 3
25,000 MILES • 1.6L • 4 CYL • 2WD • AUTOMATIC
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RENZ LAZER
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Transmission shifts 1-3 without moving except when it reaches 4th shift, I want to replace the TCM hoping that it is the problem, but Ican not find it near the battery or under the battery as other says. Please help me locate the TCM.
Another problem is the Starter, I inserted a Spacer/washer about 3mm thick because my starter gear alignment with the flywheel ring gear seems not right because just after starting the starter gear crashing with the ring gear i inspected the starter assembly but i found it good. this problem observed after replacing the crankshaft with the same specs.
Oct 29, 2022 at 6:37 AM
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STRAILER
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These are two questions; we will handle the TCM location on this thread. Please start a new question for the starter. The TCM location is inside the PCM which is located next to the battery under the hood. Check out the images (below). Please let us know if you need anything else to get the problem fixed.

Oct 30, 2022 at 12:49 PM