ecu problems

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ecu problems

Postby airmiles19 » Wed Apr 15, 2015 12:45 am

i have a Mazda mx5 convertible an had a second hand ECU
everything appears to be working but having bought a remote fob I am unable to get the unit into the program mode
I did
turn ignition on-off 3 times them press the door switch 3 times but no response
what could be wrong please \/anybody ?
thanks
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Re: ecu problems

Postby drumtochty » Wed Apr 15, 2015 8:57 am

The Mk2.5 with the electrical faults

Can you confirm the car has a factory fitted alarm / central locking system or not.
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Re: ecu problems

Postby airmiles19 » Thu Apr 16, 2015 12:21 am

yes it has
but the ECU was replaced but code in wit the key so all ok
I Have been told the ECU is not talking to the central locking system
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Re: ecu problems

Postby drumtochty » Thu Apr 16, 2015 8:28 am

You say that the car has a factory fitted central locking system.

Did it work with the fob before you had the ecu changed.

Has a Mazda dealer from the VIN number of the car confirmed that the car has a factory fitted central locking system.

Assuming the answer to the above is yes.

Replace the battery in the fob with a battery from another batch as if you have replaced the battery the fobs can be very picky about the batteries they use.

On ebay and other places there are companies who can test and repair the tiny switches on the remote.

At 8 years old one of the remotes on my Impreza stopped working, had it repaired by the an ebay fob repair man and that sorted it.

You also want to take out the drivers seat, 4 off 14mm bolts and the little cover below the steering wheel and check that all the electronic boxes under ther are clicked in and that all the connectors are pushed in to the boxes.
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Re: ecu problems

Postby airmiles19 » Fri Apr 17, 2015 7:09 pm

i bought a new fob from mazda cos the other 1 went missing
they tried
turn ign 3 times
open close the door 3 times
but unit would not go in programing mode (no sound from the horn)
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Re: ecu problems

Postby airmiles19 » Fri Apr 17, 2015 11:16 pm

I have a question I am confused
I bought an of market central locking alarm
I comes with a key fob
if I get this cut will it work the ignition or will it need reprograming for that
and will it upset the central locking system witch works on that fob
thanxs
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Re: ecu problems

Postby drumtochty » Sat Apr 18, 2015 12:20 am

You are very confused in most of your posts not just this series but in the past.

First of all you were saying that the ECU was not talking to the central locking.

The central locking does not communicate with the ECU so that is not a fault it is a seperate system.

It appears you are not sure if the central locking is a Mazda fit central locking and if it is not, a Mazda sourced fob will not work the non Mazda supplied central locking.

Can I give you some advice and this will be my last post.

If the car is startiing and running and you can lock and unlock the car with the key and looking at your luck to date.

Leave well alone and drive your car without being able to lock and unlock the car with the remote fob.

End of comments from me and goodnight.
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Re: ecu problems

Postby airmiles19 » Mon Apr 20, 2015 9:36 am

the radio fault was due to a faulty ECU witch has now been replaced witch is why (I have been told )the central locking is not working any more
the ECU comes complete with alarm immobiliser witch is now all ok
I bought a new fog from mAZDA but the unit wont go into program mode so they could not program the fob and they don't know why
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