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Nissan Primera P12 airbag issue

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Bohica View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bohica Quote  Post ReplyReply Direct Link To This Post Topic: Nissan Primera P12 airbag issue
    Posted: 22 Feb 2019 at 2:23pm
Hi Folks,
I have an airbag warning light on my dash, I have had an auto electrician come and look at the code we identified what and where the fault is. Its an earth fault in the drivers seat unit (in the side curtain bag ) we thought we fixed it by adding insulating tape to the seat frame where the wire was in contact, this worked for 12 hours and the next time we turned the car on the fault re-appeared on the dash.

I want to take the seat out of the car and have a good look at the wiring and connectors between the unit and the main loom, I have not worked on car electrics before (though I am a competent household electrician) but I am presuming I need to remove the power (remove the battery wire) to ensure the bag does not go off either when I disconnect it from the loom or reattach it to the loom. 

I then intend to insulate every connection and every point of contact between wire and metal seat frame, if anyone has any advice I would be more than grateful.

Many thanks in advance,

Paul K.
I think therefor I am.
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bavs83 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bavs83 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 2019 at 5:30pm
Disconnect battery and press brake peddle several times to discharge any risidual power in circulation. Wait for 30mins after just to be double sure (probably a bit overkill but I like to wait for a bit). Then you can handle the airbag system safely.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote imckay Quote  Post ReplyReply Direct Link To This Post Posted: 23 Feb 2019 at 10:41am
Driver Seat is the most common cause of the Airbag Light on the P12
Usually a few unplugs and replugs of the Connector under the Seat sorts it.

You can get the Airbag error codes and reset yourself

Service Manual
Chapter H Restraints
SRS Page 18 and 26


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Nuddgy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nuddgy Quote  Post ReplyReply Direct Link To This Post Posted: 16 Mar 2019 at 10:31pm
Turn ignition on without starting engine
Wait till airbag light flashes and turn ignition off
wait three seconds and complete process and least 4 times
Worked for me although I only completed process earlier today, been out in car twice since and airbag light not flashing.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote petterg Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2019 at 4:20pm
Actually the process is:
1 (with diesel, make sure the engine is warm from driving. With petrol you don't need to bother with this)
2 Let the engine and ignition be off for at least 10 minutes.

3 Get in the car, close all doors
4 Turn ignition on. Wait for the airbag light to go out (about 7 seconds).
5 While the airbag light is off, before it relightens, turn the ignition key to off (not acc)
6 Wait for 5 seconds (i think 3 to 7 seconds is the valid timeframe.

Do step 4 to 6 three times (repeat two times). Now, when you turn the ignition on you'll see that the air bag light blink pattern has changed. By counting the blinks you can read the fault code if you bother.

Do step 4-6 three more times. Then the fault code will be deleted and the system performs a self diagnosis. If the fault is fixed, it will no longer indicate a fault.

I've been doing this every time someone with significantly longer/shorter legs than me has borrowed my car. A few times it doesn't work. Usually that I've missed the timeframe for turning ignition on or off. In those cases I just redo the process next time I'm driving to the store. This has been the case for my car ever since I bought it 9 years ago.


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