Transmission trouble Codes

[Lizzy]

Codes 57 and 12 showed up when we crossed the Grd pin to the TAT pin. Can someone let us know what they mean. Thanks

[perhapsadingo8yerbaby]

Originally posted by Lizzy:
Codes 57 and 12 showed up when we crossed the Grd pin to the TAT pin. Can someone let us know what they mean. Thanks

Code 12 = Circuit: "Throttle position sensor" - an open or short circuit condition.

Code 57 = Circuit: "Reduce torque signal 1" - an open or short circuit of the "reduce torque signal 1" wire harness.

[Lizzy]

thanks for the info. Do you happen to know where I would look to find the problem. Any chance there might be a connection to the throttle cable that goes to the transmission?

[perhapsadingo8yerbaby]

Hey Lizzy, sorry, forgot to ck. back on your thread til now. What kind of problem were ya having that had you pulling codes to begin with? That would help clarify where this is going or at least where you're coming from.

Have you tried any troubleshooting yet beyond pulling the codes? and if so, have you cleared/reset the ECU to be sure the codes are still showing up? Clearing the ECU involves disconnecting neg. battery cable for at least 20 seconds and depress the brake pedal. Reconnect the batt. cable & recheck for trouble code(s).

If trouble shooting still needed... start w/lowest code 1st.

For Code 12: Start by verifying good connections at the throttle position sensor and transaxle control module connector or terminal and check wiring between these as well.

Next step would be cking. the input voltage of the throttle position sensor at the trans. control module. To do this, hook up a ckt. tester to terminal 2T (+) of the trans control mod. and ground (-). Correct voltage reading should be 0.1-1.1 at closed throttle position & 3.1-4.4 at wide open throttle. If you fall within these ranges, clear the ECU followed by rechecking for trouble codes.

Post back with any questions, results etc. cuz inquiring minds might wanna know y'know...

[Grhodes18]

Thanks for checking back. I am posting this under my dads scren name.
The Throttle position problem has been taken care of. The problem with the transmission is the hold light blinking. When you start the car the hold light is not blinking. It starts blinking when you hit the gas. The car runs find in all gears. Last June I hit a flooded area of the road and the car floated into a ditch, covering the front passengers corner of the car with water. I an attempt to dry the car out my dad disconnected a lot of electrical plugs. We will look to see if all the connections are back in place tomorrow. A lot of water got into the car and messed up the seat belt control under the drivers seat. That has been fitted. the transmission was rebuilt a few years ago. I have put very little mileage on the car since it was rebuilt. I just want the hold light to stop blinking.
Do to some other problems with the car, it has been sitting until just a few days ago (I was away at college).
The ECU has been cleared a number of times.

Lizzy

<small>[ May 28, 2004, 08:35 PM: Message edited by: Grhodes18 ]</small>

[perhapsadingo8yerbaby]

Wow. Ok, that info helps clarify possible cause(s)/effect(s) quite a bit. Water penetration and all...

Didja know that your HOLD indicator can sometimes (but not necessarily always depending on conditions) flash to indicate the same pattern as some trouble code(s)/buzzer pattern(s)? Also, the transaxle control module (TCM) has a built-in fail-safe for the throttle position sensor, speedo sensor, and all solenoids. In this scenario, if a malfunction occurs, the TCM controls operation of all remaining components according to a preset fail-safe program. The vehicle may still be driven, although driving performance will be slightly affected. This may describe your report of flashing HOLD indicator where performance does not SEEM to be obviously affected. Maybe performance is affected but not enough for you to notice right off?

Tell ya what. Feel free to post up here as needed to bounce ideas around but given your low miles on rebuilt tranny along with extensive water exposure & disconnected/reconnected connectors, might be worth your while to pick up a Mazda Factory Workshop Manual. Not cheap but is cheaper than even a couple hours of mechanic's billable labor and might even save your dad's and your own sanity. Just a thought...

If you're interested, the following link is the best reliable supply for this type documentation I've found. Your car is listed 1/2 way down the page. Your call...

http://www.books4cars.com/result2.asp?findyear=1992&Submit=Go&offset=50

Hope this helps. Lemme know how things go for ya!

--Jimmy

[Grhodes18]

Getting the book is a good idea. But in the mean time is there anythink we can do now about the hold light flashing.

[perhapsadingo8yerbaby]

Originally posted by Grhodes18:
The Throttle position problem has been taken care of. The problem with the transmission is the hold light blinking. When you start the car the hold light is not blinking. It starts blinking when you hit the gas. The car runs find in all gears. Lizzy

Would be glad to send ya e-copies of my applicable factory manual sections, wiring diags & terminal voltage charts, but cannot do that cuz my copies are hard-bound & I don't have a flatbed type scanner...

The HOLD light flashes if a malfunction exists in any of the EC-AT sys. components. Sounds as though a malfunction(s) is persisting and sounds related to your opening the throttle when giving it gas. The car is then probably running in TCM safe mode per my previous post-- if so, the TCM should also be memorizing the trouble code(s).

Are you saying that no further trouble codes are evident?... Because if they are, you'll see that HOLD light flash til ya fix the cause of the malfunction/code(s).

[Grhodes18]

Is there anyway to reset the TCM?

[Lizzy]

Can someone shed some light on how to correct a "Reduce torque signal 1" problem.

[guyaverage]

Looky here boys.... Not necessarily what is causing your particle blinking light issue, but interesting nonetheless...>>>>


http://www.alldata.com/service_provider/techrx/2002/20020204b.html

[atlantamx3]

Originally posted by guyaverage:
Looky here boys.... Not necessarily what is causing your particle blinking light issue, but interesting nonetheless...>>>>


http://www.alldata.com/service_provider/techrx/2002/20020204b.html

HOLY FLYING SH*T BATMAN!!

What a great, detailed explanation! THAT needs to be in the FAQ-- this certainly gets asked enough.

[Grhodes18]

On behalf of Lizzy Thank You for the info guyaverage, I will run those test later today or tomorrow.