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Focus Side Satellite Sensor Placement??


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#1 tomosllyr

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Posted 22 April 2013 - 08:57 AM

I'm doing some work on a friend's focus before his mot. His airbag light is on, with the flashing code 4-2 on ignition. By doing some research I've localised that code to the LH satellite airbag sensor, but can't find any indication on the internet of where this sensor is. I found the front one just behind the bonnet latch, and have given that a clean as there was some corrosion on the points, but can someone help me find the offending sensor?

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#2 tomosllyr

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Posted 22 April 2013 - 04:52 PM

Anyone? I've had a search through the site but can't find an answer



#3 Stoney871

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Posted 23 April 2013 - 03:39 PM

Code 42 is Left hand airbag sensor feed/return circuit open.

Btw what car is it you have?

#4 tomosllyr

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Posted 23 April 2013 - 04:11 PM

It's a 2003 Focus 1.6 Ghia. Any idea where I find this sensor?

#5 Stoney871

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Posted 23 April 2013 - 04:17 PM

I'll have a look at my Haynes book when I get a chance.

#6 tomosllyr

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Posted 23 April 2013 - 05:52 PM

Thanks!

#7 Stoney871

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Posted 23 April 2013 - 09:06 PM

It would appear that there is only one airbag sensor on the front of the car and is mounted to one side of the bonnet lock unit.

The sensor feeds to the control module which determines whether any impact is hard enough to fire the airbags.

The airbag central control module is under the centre console directly in front of the handbrake.

 

 

 

The first thing I'd recommend though is to get the fault codes read and go from there, you may well find that reading and clearing any codes cures the problem.

If not then I'd suspect a wiring fault to the control module or a loose plug.

 

Do make sure that if you choose to work on the module or any airbag/connections that you disconnect the battery, and leave the car to disperse static for 10 to 20 minutes first to ensure you don't get any accidental bag deployment, and if you do remove any bags that you place them face up in a safe area and never point them at your face/chest or run any power through the bags while disconnected.



#8 tomosllyr

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Posted 23 April 2013 - 10:35 PM

No mention of a LH sensor then? In that case I reckon I've done all I can. No one seems to know what this sensor is!

#9 Stoney871

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Posted 23 April 2013 - 11:04 PM

It's possible that the lateral sensors are mounted either integrally on the control module or as in some cars under the inner door sill trims.

On the MK2 Focus they're mounted under the front seat belt inertia reels behind the B pillar bases.




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