Question about 1996 Mazda MX-5 Miata

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What is tcm on a mazda - 1996 Mazda MX-5 Miata

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Transmission control module.

Posted on May 09, 2014

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The TCM is the Transmission Control Module.

Posted on May 09, 2014

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1 Answer

What capacitors are in a 2007 mazda 3 touring 2.3l 5spd. Automatic tcm?


There are plenty of them. They are tan, brown, purple , and white in color. Finding bad one is the really fun part. My guess is there are 200+ in just one TCM/PCM.

Sep 29, 2016 | Mazda Cars & Trucks

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2005 Mazda 6 4cylinder codes u0101 & u0155


Common problem with several causes including bad ground wire or bad tcm/pcm. Highly recommend you check one of the many mazda forums for specific details

Aug 28, 2016 | Mazda Cars & Trucks

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How do fix TCM and ECM


Hello, It is not just a simple answer to your question of fixing tcm and ecm Depending on the issue you with the TCM or ECM you will need all the proper tools and maybe the Mazda software. even if you have all these things, you still need the knowledge on how to use them or you can damage the ECM TCM very easily. If you have an OBD2 scan tool then you can scan the codes and clear them. The light should go out. If it comes back on then scan the codes again and post them here. I will tell you what you need to do. The code will start with a letter then four numbers, like this P0301 or P1611 or something like that. I am here to help, -Tim

Mar 30, 2015 | 2004 Mazda 6

1 Answer

What is TCM and ECM


Tcm= transmission control module ecm= engine control module. Vehicles with an automatic transmission are equipped with both of these. Many vehicles now have what is called a PCM, which is a powertrain control module and is Both the TCM and ECM in one controller. Feel free to ask if you need any further assistance. Regards,-Tim

Mar 30, 2015 | 2004 Mazda 6

2 Answers

Automatic gearbox not changing to 4th


in 93, some have a TCM , transmissing shifting brain. puter.
it has flash codes, its own DTC,
this is covered in the FSM , online at all mazda forums and at
alldata.com.
on old TCM , you insert a jumper and the TCM goes to diagnostic mode and can tell you if it has bad inputs.
that be first , after checking ATF levels.
and all fuses.

Jun 21, 2014 | 1993 Mazda 626

1 Answer

06 mazda 6 battery was crossed polarized, however the TCM fuse blew and we were able to start the car. Now the car shifts hard and will not shift out of third it seems. Any suggestions,? is the TCM fried?


Sounds like you may have fried the tcm I would go to car-parts.com and get a good used one. You could check and see if there is any fuses that you blew out that control the tcm if you have a manual for the car you can look at a wiring diagram and find out what fuses are associated with the tcm if not check them all.

Nov 30, 2010 | 2006 Mazda 3

1 Answer

Please,can you help me fix cods problems p0732,p0734 on my 2006 Mazda Tribute


P0732 - Improper Ratio for Second Gear.
P0734 - Improper Ratio for Fourth Gear.

This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by TCM as follows:

Torque converter slip ratio = A x C/B A: Output shaft revolution signal from revolution sensor B: Engine speed signal from ECM C: Gear ratio determined as gear position which TCM supposes

If the actual gear position is higher than the position (2nd and 4th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

This malfunction will be caused when shift solenoid valve B is stuck open.

Gear positions supposed by TCM are as follows. In case of gear position with no malfunctions: 1 , 2, 3 and 4 positions In case of gear position with shift solenoid valve B stuck open: 4* , 3, 3 and 4 positions to each gear position above.

Symptoms: Engine Light ON (or Service Engine Soon Warning Light)

Diagnostic trouble code A/T 2ND GR FNCTN with CONSULT-II or P0732 without CONSULT-II is detected when A/T cannot be shifted to the 2nd gear position even if electrical circuit is good.

Possible Causes:
- Shift solenoid valve B
- Each clutch
- Hydraulic control circuit


Check it and tell us news.

Nov 23, 2010 | Mazda Tribute Cars & Trucks

4 Answers

Error code U0101: Lost Comm with TCM


i do have the same problem and i took the car to 5 differant mechanic an dget no solution the aaamco the petboys the mazda dealer another transmission specialist please let me know if u have any solution

Jan 02, 2010 | 2006 Mazda 3

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