Removing the alarm/immobiliser part of a zetec loom?

Steve Rst · 21-12-2008, 06:32 PM

As title really

I have a 2.0l zetec engine from a 2000 x reg focus.

I'm fitting it into something else, and want to use the original ecu/loom for the moment to get it up and running.

I have the key, transponder etc, but i dont want to use the alarm/immobiliser.

If i split the loom, do i have to fool the ecu into thinking the alarm is there? or can i just cut it out?

cheers for any help

Obviously this is info that may not want to go into the public domain for peoples car security, so if someone could pm the answer that would be great.

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Steve Rst · 24-12-2008, 04:49 PM

bump

pa_sjo · 24-12-2008, 04:59 PM

The immobilisor is inside the ECU, so no.

Steve Rst · 24-12-2008, 08:12 PM

so whats the black box all about then?

clarke5700 · 24-12-2008, 08:15 PM

probaly the transponder unit

westus1 · 24-12-2008, 10:33 PM

you cant cut it out, its through the ecu
unless you've got an aftermarket 1 fitted as well
but you cant do away with the chip'd key

pa_sjo · 24-12-2008, 10:34 PM

An alternative would be to use a very early 2L Mondeo ECU and loom. Something circa 1993. They ran an external PATS unit which you can bypass by bridging a couple of wires.

tabetha · 25-12-2008, 02:44 AM

AS above the external pats ones on the early cars up to 96 only need one wire cutting out and bridging, they only cut the ignition feed.
tabetha

Steve Rst · 26-12-2008, 08:43 AM

ive got the key and transponder ready, so i'll just have to wire that all in then.

cheers

steve

mgb · 15-05-2009, 09:39 AM

I have the same problem but on a '99 Focus 2Ltr Zetec. The loom I have stopped at the connector on the A Post which I have now removed.
I can't find any details for the wiring of the key transponder, does anyone know which pins on the ECU the transponder wires should be connected to?

JonathanJ · 16-05-2009, 09:17 AM

Easiest way is to go to maplins and get a black plastic box , get the key and the pickup ring and place in box and then hide box up the back of the dash , or just tape key and ring together up back of dash and use your normal key to energise ignition circuit , quick esay and saves a lot of hassle

mgb · 16-05-2009, 09:57 PM

Thanks Jonathan, the problem is that I don't have the wiring between the transponder and the ECU and therefore do not know which connections to make
Cheers
Mike

PerS · 11-06-2009, 09:43 PM

mgb

If you have got an ECU with 104 pins:

No 1 on the transponder to +
No 2 to ground
No 3 to pin 19 on ECU
No 4 to pin 53 on ECU

Per

mgb · 11-06-2009, 10:45 PM

Thanks Per

Unfortunately, mine is a 60 pin ECU

Cheers

Mike

PerS · 13-06-2009, 09:15 AM

60 pin ECU (EEC V):

No 1 on the transponder to +
No 2 to ground
No 3 to pin 38 on ECU
No 4 to pin 5 on ECU

Per

mgb · 16-06-2009, 10:08 PM

Thanks Per - that is excellent.

Is there a convention when numbering the pins on the PATS unit, it does not have any numbers on it

Cheers

Mike

PerS · 17-06-2009, 06:38 PM

mgb

Send me a PM with you e-mail adress and I will send you a picture with the pin numbering.

Per

gklhso · 11-08-2009, 11:10 PM

perS, from your replies i noticed that you do know what you are talkin about, so i have a question, I have a mk2 mondeo 1.6 and i put a 2.0 silvertop in, unfortunately my car has an EEC-V 104 pin ECU, so how can i fit the old DEEP DESK or DEWY non pats ECU's???

24-12-2008, 04:49 PM	#2
Steve Rst Regular Contributor Garage is empty, add now Trader Score: (0) Join Date: Jul 2003 Location: Northampton Posts: 253 Rep Power: 9	bump __________________ Better to keep your mouth shut and appear stupid, than open it and remove all doubt.

24-12-2008, 04:59 PM	#3
pa_sjo Colossal Pervert Garage is empty, add now Trader Score: (0) Join Date: Jun 2003 Location: Location: Location: Posts: 3,689 Rep Power: 12	The immobilisor is inside the ECU, so no. __________________ Ban #1: 23/09/08-25/09/08 - Posting a photo of the Gestapo.

24-12-2008, 08:12 PM	#4
Steve Rst Regular Contributor Garage is empty, add now Trader Score: (0) Join Date: Jul 2003 Location: Northampton Posts: 253 Rep Power: 9	so whats the black box all about then? __________________ Better to keep your mouth shut and appear stupid, than open it and remove all doubt.

24-12-2008, 08:15 PM	#5
clarke5700 YES I KNOW I CANT SPELL Garage is empty, add now Trader Score: (0) Join Date: Mar 2008 Location: chingford e4 Posts: 4,878 Rep Power: 8	probaly the transponder unit __________________ " im special,, excuse my spellings"

24-12-2008, 10:34 PM	#7
pa_sjo Colossal Pervert Garage is empty, add now Trader Score: (0) Join Date: Jun 2003 Location: Location: Location: Posts: 3,689 Rep Power: 12	An alternative would be to use a very early 2L Mondeo ECU and loom. Something circa 1993. They ran an external PATS unit which you can bypass by bridging a couple of wires. __________________ Ban #1: 23/09/08-25/09/08 - Posting a photo of the Gestapo.

24-12-2008, 10:33 PM	#6
westus1 Advanced PassionFord User Garage is empty, add now Trader Score: (6) Join Date: Dec 2006 Location: glasgow Posts: 1,763 Rep Power: 7	you cant cut it out, its through the ecu unless you've got an aftermarket 1 fitted as well but you cant do away with the chip'd key

25-12-2008, 02:44 AM	#8
tabetha BANNED BANNED Garage is empty, add now Trader Score: (0) Join Date: Jul 2006 Location: uk Posts: 24,646 Rep Power: 0	AS above the external pats ones on the early cars up to 96 only need one wire cutting out and bridging, they only cut the ignition feed. tabetha

26-12-2008, 08:43 AM	#9
Steve Rst Regular Contributor Garage is empty, add now Trader Score: (0) Join Date: Jul 2003 Location: Northampton Posts: 253 Rep Power: 9	ive got the key and transponder ready, so i'll just have to wire that all in then. cheers steve __________________ Better to keep your mouth shut and appear stupid, than open it and remove all doubt.

15-05-2009, 09:39 AM	#10
mgb Virgin Garage is empty, add now Trader Score: (0) Join Date: May 2009 Location: Warrington Posts: 5 Rep Power: 0	Removing immobiliser I have the same problem but on a '99 Focus 2Ltr Zetec. The loom I have stopped at the connector on the A Post which I have now removed. I can't find any details for the wiring of the key transponder, does anyone know which pins on the ECU the transponder wires should be connected to?

16-05-2009, 09:17 AM	#11
JonathanJ PassionFord Regular Garage is empty, add now Trader Score: (0) Join Date: Mar 2008 Location: Tipton Birmingham Posts: 387 Rep Power: 4	Easiest way is to go to maplins and get a black plastic box , get the key and the pickup ring and place in box and then hide box up the back of the dash , or just tape key and ring together up back of dash and use your normal key to energise ignition circuit , quick esay and saves a lot of hassle

16-05-2009, 09:57 PM	#12
mgb Virgin Garage is empty, add now Trader Score: (0) Join Date: May 2009 Location: Warrington Posts: 5 Rep Power: 0	Thanks Jonathan, the problem is that I don't have the wiring between the transponder and the ECU and therefore do not know which connections to make Cheers Mike

11-06-2009, 09:43 PM	#13
PerS Virgin Garage is empty, add now Trader Score: (0) Join Date: Jun 2009 Location: Sweden Posts: 3 Rep Power: 0	mgb If you have got an ECU with 104 pins: No 1 on the transponder to + No 2 to ground No 3 to pin 19 on ECU No 4 to pin 53 on ECU Per

11-06-2009, 10:45 PM	#14
mgb Virgin Garage is empty, add now Trader Score: (0) Join Date: May 2009 Location: Warrington Posts: 5 Rep Power: 0	Thanks Per Unfortunately, mine is a 60 pin ECU Cheers Mike

13-06-2009, 09:15 AM	#15
PerS Virgin Garage is empty, add now Trader Score: (0) Join Date: Jun 2009 Location: Sweden Posts: 3 Rep Power: 0	60 pin ECU (EEC V): No 1 on the transponder to + No 2 to ground No 3 to pin 38 on ECU No 4 to pin 5 on ECU Per

16-06-2009, 10:08 PM	#16
mgb Virgin Garage is empty, add now Trader Score: (0) Join Date: May 2009 Location: Warrington Posts: 5 Rep Power: 0	Thanks Per - that is excellent. Is there a convention when numbering the pins on the PATS unit, it does not have any numbers on it Cheers Mike

17-06-2009, 06:38 PM	#17
PerS Virgin Garage is empty, add now Trader Score: (0) Join Date: Jun 2009 Location: Sweden Posts: 3 Rep Power: 0	mgb Send me a PM with you e-mail adress and I will send you a picture with the pin numbering. Per

11-08-2009, 11:10 PM	#18
gklhso 15000 Garage is empty, add now Trader Score: (0) Join Date: May 2009 Location: Egypt Posts: 18 Rep Power: 0	perS, from your replies i noticed that you do know what you are talkin about, so i have a question, I have a mk2 mondeo 1.6 and i put a 2.0 silvertop in, unfortunately my car has an EEC-V 104 pin ECU, so how can i fit the old DEEP DESK or DEWY non pats ECU's???

11-08-2009, 11:10 PM
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