Toaf Airbag faults
 

So I have managed to get a TOAF scan of my ongoing airbag light issue and its giving the following faults;

9144 Side Sensor Right: Communication Error
9142 Side Sensor Right: Plausibility Error
9001 Supply Voltage: Low voltage
9036 Ignition Circuit (SideBag Front Seat Left) :Resistance too high
9016 Ignition Circuit (Belt Pretensioner Left) : Resistance too high

So am i right in thinking I have 2 issues to resolve,
One the passenger seat, both the airbag and tensioner connections which I have taken apart and cleaned a good few times
Secondly the drivers side side impact sensor which I will need to check connection or replace.

Not to sure of the Low voltage error but I did just put the battery back on after it went flat checking the airbag light after twiddling

Any assistance most gratefully received

Stubs

Can't help a lot I'm afraid, but having just been down a similar road myself, I was informed (checked, and it's the case) that the pretensioners are connected in series, so whatever it says, there's no way to know which one is causing a problem - so I'd start by doing the connectors under BOTH seats ;)

Do you have a sunroof?

If so water may of got into the plugs on the sensors under the carpet.
As for pretensioner on mine I removed the plugs under the seat and just soldered and heatshrunk them together, never had a problem since.

No Sunroof on the car but I'll see if I can make better connection

What a revelation and a surprise Roger! RAVE does indeed show the LH and RH front pretensioners wired in series but only on later cars with the Autoliv DCU. The rear, however, are not. They are individually connected to the DCU.

TOAF's code 9016 ("Belt pretensioner left, resistance too high") omits the essential information: front or rear? Are we to assume it's rear since, as Roger points out, it's impossible for the DCU to distinguish between the two at the front. :shrug:

Simon

I don't know... the TOAF SRStool (same author as TOAF, but a separate module for the Autoliv SRS fitted to later models like mine) gives the facility to toggle sensors on and off; in the case of the pretensioners, it lists the front ones separately.


However, my test confirmed what you'd expect - if the airbag light is on, and the tool indicates a front pretensioner, switching either left or right off kills it.


Who knows - maybe the software author felt it more "correct" to do it this way, or anticipated its use on (maybe non-Rover?) cars with separate wiring, or whatever.


Either way, it's a very useful little tool - when our highly experienced T4 man uses it in preference to T4, it says something...


I didn't even know there were rear pretensioners. Perhaps they don't cause trouble, as there isn't any movement of the seat to disrupt connection :D

Hi,

I have advised this on my other post on General: airbag light on and water leak?

The wiring was cut under the passenger seat, I am in Spain on holiday and the car is a (LHD).

I have these loose wires and wondered if you are aware how they connect up.

Passenger seat: Right side of seat has 2 blue cable.
Left hand of seat has 1@ Purple/White cable.
and 1@ Black/White cable.

From floor there are 4 cables in total:
1@ Orange/Red
1@ Purple/Red
1@ Brown
1@ Brown/Red

Any help in knowing which wires connect to which most helpful.

Also you mention about Pre-tentioners, are these the wires that come from the floor near the front of the seats that clip onto the rear of each seat that tentions the seat belt, but not electrical!

Thanking you in anticipation.

On my (RHD) car, those colours are the wires from the driver’s side pre-tensioner. They then connect to a pair from the loom, which are I think orange/brown and brown/red…



Pretty sure the blue pair come down from the airbag itself. They connect to a different-coloured pair from the loom – sorry, not sure of the colour. Perhaps somebody could post a decent resolution pic of the wiring diagram? But I *THINK* they’re probably the red/orange and red/purple ones.



Nope. The pre-tensioners are squibs in the seat-belt clips which fire in the event of an accident, and tighten the seat belt around you.

Although yours is a LHD this might help:

I suspect what you are looking at is the cable that adjusts the height of the seat belt mounting on the B pillar, moves when the seat is moved.

Hi Hogweed

Thanks for the info. I shall see if somebody else has maybe a wiring diagram which would highlight the correct colour combinations which connect together, as my garage says if incorrectly connected I might as well scrap the car if the airbags acitvate. Plus I just have a brown from the seat and you mention Orange/Brown so I shall check it again in daylight tomorrow. Thanks for clearing up the pre-tentioner situation, I am now aware that what I mentioned were the seat belt tentioners to adjust the height of the seat belt.

Many thanks once again.