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mx-5 mk2 (2001) Faulty Immobiliser

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Alex
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mx-5 mk2 (2001) Faulty Immobiliser

Postby Alex » Thu Jan 25, 2018 12:01 pm

Hi there,

I've been reading through some of these forums and looks like some really great stuff from Mazda Menders and other users - so hoping somebody can help me out.

An issue with a 2001 mx-5 mk2 began last week when tried to start the vehicle. Seemed to be turning over just fine but no ignition - which lead me to believe either a problem with fuel or electrical. Tried next day and again, turned over but no ignition. Prepared to tow car to garage on following day but car seemed to miraculously start. Took to garage anyway, turned off and successfully started again at garage on first attempt before handing over keys for them to took a look.

Given the following diagnosis from auto-garage:

Investigate non-start
Battery flat, attempted jump start
Vehicle cranks over but will not fire
Check for fuel at rail, fuel present but no pressure
Supplied separate fuel supply, still will not fire
Checked for spark at plugs, no spark present
Possible immobiliser fault.
Put battery on charge
Tested battery, battery faulty
Fitted battery from stock, still non-start
Removed immobiliser control unit, inspected and refitted.
Vehicle started ok and now shows the immobiliser light when vehicle starts
Suspect immobiliser fault
Remove test battery and refit original, non start

Upon collection of the car I was told it would not start, but after 5 or so attempts, it did come to life and i managed to drive home. I am slightly sceptical about being told my battery is faulty because no issues before hand and had enough juice to start after 5 failed attempts.

I am obviously more concerned about the intermittent immobiliser fault and would welcome any help and advice on the matter.

It may be worth noting that the car was left standing the week previous, but then running with no issues for a couple of days before this problem. Also, the weather has been terrible for the last couple of weeks so i would not rule out some sort of water ingress - but this was not mentioned by the garage technician.

Thanks in advance for any help!
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Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Mazda Mender » Thu Jan 25, 2018 10:39 pm

Has anyone checked the passenger side foot well under the carpet for water or damp yet?.
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
Alex
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Joined: Thu Jan 25, 2018 11:21 am

Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Alex » Sun Jan 28, 2018 12:09 pm

Mazda Mender wrote:Has anyone checked the passenger side foot well under the carpet for water or damp yet?.
M-m


Thanks for the post, apologies on late reply.

I don't think this was checked at the garage but i've just peeled the carpet back myself and stuck my hand in there. Seems bone dry. Im not sure if it has dried out since the issue started but it rained last night so if there was a leak i'd expect it to be wet now.
Alex
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Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Alex » Sun Jan 28, 2018 8:45 pm

Checked today, bone dry.
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Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Mazda Mender » Sun Jan 28, 2018 9:12 pm

Good all dry ..did they check for any faults through the OBDII socket?
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
Alex
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Posts: 10
Joined: Thu Jan 25, 2018 11:21 am

Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Alex » Mon Jan 29, 2018 10:15 am

Mazda Mender wrote:Good all dry ..did they check for any faults through the OBDII socket?
M-m


Nope, I don't think they ran any kind of fault diagnostics. They suggested i take the car to another garage, presumably where they have the equipment to do this kind of test. I rang the place and without even knowing what is wrong with it they were quoting me around £600.
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blackyb
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Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby blackyb » Tue Jan 30, 2018 12:49 am

You can buy a decent hand held scanner for less than £100.00.

Mine cost around £80.00 and does all I need it to on obii 2s
1993 1.6 Eunos Roadster (gone)
1998 UK Mk 2 1.6 (gone)
2003 1.8 SVT Sport (Why did I sell it!!!!)
1991 1.6 Eunos Roadster with a bit of bling.

Life is a journey, best travelled topless in an MX5!!
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Mazda Mender
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Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Mazda Mender » Tue Jan 30, 2018 7:16 am

The bay of E £7. bluetooth straight to your smart phone or lap top, also a version with a cable for the same price..
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
Alex
New
Posts: 10
Joined: Thu Jan 25, 2018 11:21 am

Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Alex » Tue Jan 30, 2018 4:08 pm

I've ordered a cheap one off ebay, will post the results when it arrives. Thanks for your help so far.
Alex
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Posts: 10
Joined: Thu Jan 25, 2018 11:21 am

Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Alex » Mon Feb 05, 2018 1:57 pm

Ok i've hit a bit of a problem. Bought the OBD2 connector, cant find where to plug it in. There is definitely no port by the fuse box under steering wheel. There is however, a grey box with diagnosis on the top located under the bonnet, above the passenger wheel arch - But this does not fit the 16 pin OBDII socket. Do i need to get a different connector?
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Mazda Mender
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Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Mazda Mender » Mon Feb 05, 2018 7:32 pm

Can you show me the front of your mx5..
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
User avatar
blackyb
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Posts: 848
Joined: Tue Sep 17, 2013 8:41 pm
Location: Scarborough

Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby blackyb » Tue Feb 06, 2018 10:51 pm

Almost sure the OBDII port was located to the lower right of the steering wheel under a pull of panel on my departed mk2 and 2.5

:confusion-confused:
1993 1.6 Eunos Roadster (gone)
1998 UK Mk 2 1.6 (gone)
2003 1.8 SVT Sport (Why did I sell it!!!!)
1991 1.6 Eunos Roadster with a bit of bling.

Life is a journey, best travelled topless in an MX5!!
User avatar
Mazda Mender
Site Admin
Posts: 12425
Joined: Tue Dec 06, 2011 6:18 pm
Location: Pie land,North west
Contact:

Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby Mazda Mender » Wed Feb 07, 2018 7:15 am

blackyb wrote:Almost sure the OBDII port was located to the lower right of the steering wheel under a pull of panel on my departed mk2 and 2.5

:confusion-confused:

She might be a last sale Mk 2 not a MK 2.5???
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
User avatar
blackyb
Serial Poster
Posts: 848
Joined: Tue Sep 17, 2013 8:41 pm
Location: Scarborough

Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby blackyb » Wed Feb 07, 2018 5:45 pm

From memories of my now departed mk2 and 2.5, the OBDIi port was under a pop off cover to the bottom right of the steering wheel

:confusion-confused:
1993 1.6 Eunos Roadster (gone)
1998 UK Mk 2 1.6 (gone)
2003 1.8 SVT Sport (Why did I sell it!!!!)
1991 1.6 Eunos Roadster with a bit of bling.

Life is a journey, best travelled topless in an MX5!!
User avatar
blackyb
Serial Poster
Posts: 848
Joined: Tue Sep 17, 2013 8:41 pm
Location: Scarborough

Re: mx-5 mk2 (2001) Faulty Immobiliser

Postby blackyb » Wed Feb 07, 2018 5:47 pm

She could be, but it should certainly have a OBDII port hidden away somewhere.

And yes yet another double post by yours truly :bow-yellow:
1993 1.6 Eunos Roadster (gone)
1998 UK Mk 2 1.6 (gone)
2003 1.8 SVT Sport (Why did I sell it!!!!)
1991 1.6 Eunos Roadster with a bit of bling.

Life is a journey, best travelled topless in an MX5!!

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