Where is the transmission module on a 2003 Mazda 4000what does it look like and can it be on the firewall

https://www.mazdaforum.com/forum/mazda-cx-9-50/where-transmission-control-module-located-part-transmission-43948/

Yes you need to remove the roof motor module and then move the sun roof to closed and then reinstall the module.

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Failure of EGR Differential Pressure Sensor : Mazda Tribute ...

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Check Engine Light and Hesitation or Stumbling While Driving on Mazda Tribute ...this is my second egr valve and car is not picking up the right sped and when ... Mazda Tribute 2003, replacing burnt DPFE, connector bunrt, Need color pinout. ... Drivetrain · Electrical & Lights · Engine · Exhaust & Emissions · Heating & AC ...

Check Engine Light Diagnosis Cost for Mazda Tribute ...

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A Check Engine Light is turned on when the Mazda Tribute engine control module detects a fault in the emissions system. One or more diagnostic codes will be

probly in the abs module-which is in the brake fluid line--a new module can cost 3000--if the fluid is dark changeit cause it destroys the modules--remembr u can stil brake w out antilock

It is in the high pressure line going to the evaporator like everyone said. My Haynes manual made it look like it was at the connection right at the firewall but it is further upstream than that. There is a compression fitting upstream of the A/C tube fitting that you have to undo. Once you open that part you'll see the orifice tube. Hope this helps

The TCM is the Transmission Control Module.

You'll find the sensor behind the firewall on the axle. To replace it, use a jack to raise the car and reach the sensor (on the driver's side). Remember to drain out the transmission fluid before you begin.

if your light is on have codes pulled to tell you what the problem is then go from there

could be a random misfire, check spark plugs, if that dosen't work you may need to replace coils

This is a known issue with certain '03 and '04 MPV transmissions; my 2003 had the same problem. There is a Mazda technical service bulletin about this - 05-003/004 (Shift Shock). You need to take the van to a qualified shop and have them flash the transmission control module (TCM) with new firmware.

I had this done. It did not completely fix the problem but it did reduce its occurrence.