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Old 14-04-2022, 10:20 PM   #1
fordbossxr8
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Default 2012 mc mondeo saying immo active

Hi, I have a 2012 mondeo that says immo active on the dash. For the life of me I can't find a fault. Can bus wires are 60 ohms. Can talk to everything. I do need to rescan again for dtcs. Even managed to borrow pcm bcm barrel/key pats reader from another car no different. I'm at the point it's something in the wiring somewhere. Has anyone seen or heard of anything that will stop it from cranking and come up with immo active?
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Old 15-04-2022, 07:11 AM   #2
whitelion65
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Default Re: 2012 mc mondeo saying immo active

Is “immo” the immobiliser?
Sorry, have no answer for you.
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Old 15-04-2022, 08:00 AM   #3
rondeo
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Default Re: 2012 mc mondeo saying immo active

ABS faults? DTCs? Jump started? Previous low battery?
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Old 16-04-2022, 05:46 PM   #4
fordbossxr8
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Default Re: 2012 mc mondeo saying immo active

Had another quick today. Turns out I have no coms with pcm or tcm. Have coms to abs module. Is there a pcm pinout available? Want to check the powers and grounds at the pcm and also the com wires back to the underhood fuse box. Seeming like I'm missing one
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Old 16-04-2022, 06:20 PM   #5
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Default Re: 2012 mc mondeo saying immo active

I have a 2010.5 pcm wiring diagram not able to upload it here due to size - 1.5 mB.



Check integrity of connectors on the GEM ? I have heard about washer fluid creeping up from the sensor...



FYI I'm a DIYer not an expert.
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Old 17-04-2022, 09:39 AM   #6
russellw
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Default Re: 2012 mc mondeo saying immo active

The MC Mondeo wiring schematics are available in our tech portal.
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Old 17-04-2022, 05:19 PM   #7
fordbossxr8
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Default Re: 2012 mc mondeo saying immo active

Hi, yes thanks but there's no pcm connector pin outs in them diagrams went through them all. Yes I did hear about water in the gem and I have checked it is OK.
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Old 17-04-2022, 05:21 PM   #8
fordbossxr8
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Default Re: 2012 mc mondeo saying immo active

Wanted to check all my powers and ground for the pcm.
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Old 18-04-2022, 02:15 PM   #9
fordbossxr8
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Default Re: 2012 mc mondeo saying immo active

Turns out I can talk to the tcm and pcm. But can’t talk to rcm module. This is the codes I pulled out

U015100-lost coms with rcm
U042268- invalid data received from bcm
U041568-invalid data received from abs
B10a202- crash input
B10a215- crash input
U045262- invalid data received from rcm
U041800- invalid data received from brake system control module

Turn ignition on still comes up with immobiliser active
My question is. Is the rcm apart of the immobiliser system?
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Old 18-04-2022, 03:52 PM   #10
fordbossxr8
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Default Re: 2012 mc mondeo saying immo active

Turns out I’m getting this dtc now

Anyone got a flow chat for this dtc
B10DA:51-2F pats target identifier
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Old 14-05-2022, 07:27 PM   #11
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Default Re: 2012 mc mondeo saying immo active

Have you tried disconnecting battery for a few mins and reconnecting.
Worked\on my daughters car (MC Diesel)
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