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Seat belt pretensioner fault code. #4463407
07/18/17 09:26 PM
07/18/17 09:26 PM
Joined: Aug 2006
Posts: 9,888
Central Washington
Colt45ws Offline OP
Colt45ws  Offline OP
Joined: Aug 2006
Posts: 9,888
Central Washington
So I noticed today that my airbag light was on. I cycled the ignition and it flashed 3 and 3 for Driver side seatbelt pretensioner fault.
I connected Forscan and Got B2292 which corresponds to the same issue. I went into the Restraint Control Module PIDs and had it show me the resistance that it was seeing for the driver side and passenger side pretensioners.
Driver 6 ohm
Passenger 3 ohm

So if 3 ohm extra is enough to make it trip a light idk. Unfortunatly allll my tools are at work, including my DMM, so I couldnt check the wiring from the RCM to the plug as per the service manual to make sure it wasnt in the wiring. I will tomorrow though.
If it is the seatbelt module itself, has any one tried rebuild services like myairbags.com? It pretty obvious the seatbelt is tired anyway. Wont retract unless I push it up into the hole. Im tempted to try it.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 86k
Pennzoil Conv HM 5W30, Fram XG2
Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4463449
07/18/17 10:33 PM
07/18/17 10:33 PM
Joined: Aug 2009
Posts: 577
Modesto,CA
mehullica Offline
mehullica  Offline
Joined: Aug 2009
Posts: 577
Modesto,CA
Don't ever check resistance of any airbag components. Only the wire harness. You can discharge the components using a DMM

Re: Seat belt pretensioner fault code. [Re: mehullica] #4463454
07/18/17 10:43 PM
07/18/17 10:43 PM
Joined: Aug 2006
Posts: 9,888
Central Washington
Colt45ws Offline OP
Colt45ws  Offline OP
Joined: Aug 2006
Posts: 9,888
Central Washington
Originally Posted By: mehullica
Don't ever check resistance of any airbag components. Only the wire harness. You can discharge the components using a DMM

Thats the plan. Once I get my DMM from work I can check the harness.

Last edited by Colt45ws; 07/18/17 10:44 PM.

-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 86k
Pennzoil Conv HM 5W30, Fram XG2
Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4463471
07/19/17 12:20 AM
07/19/17 12:20 AM
Joined: Nov 2004
Posts: 7,808
Texas
GMBoy Offline
GMBoy  Offline
Joined: Nov 2004
Posts: 7,808
Texas
I've had 2 vehicles with pretensioner faults. On one I was able to just unplug the connector, clean it and spread die electric grease on the plug and reconnect to fix it. On another I had to go to a junk yard and got another one. When I see the passenger presence system faults I just bypass the seat sensor with a little module made by 360airbags. It plugs in the harness and fools the system and leaves the airbag always on.

Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4463480
07/19/17 12:54 AM
07/19/17 12:54 AM
Joined: Jan 2006
Posts: 746
Los Gatos CA
djb Offline
djb  Offline
Joined: Jan 2006
Posts: 746
Los Gatos CA
On the cars I maintain (mostly BMWs) the common problem is the connector on the harness under the seat. The contact resistance can increase without a specific cause, but moisture and physical abuse (feet, or objects under the seat when moving) are the common causes.

An airbag trigger circuit requires a considerable electrical jolt to ignite the charge. You aren't going to get that energy with a regular DMM. If you could, dozens would be going off in auto boneyards every day. But the manufacture doesn't want the liability if there is a meter out there that puts out high current to test low resistance, so they simplify the rule to "we told you not to".

Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4463483
07/19/17 12:57 AM
07/19/17 12:57 AM
Joined: Aug 2006
Posts: 9,888
Central Washington
Colt45ws Offline OP
Colt45ws  Offline OP
Joined: Aug 2006
Posts: 9,888
Central Washington
Yeah, Im hoping its something simple like a little corrosion on a connector or something and I can just clean it up.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 86k
Pennzoil Conv HM 5W30, Fram XG2
Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4463546
07/19/17 04:40 AM
07/19/17 04:40 AM
Joined: Dec 2003
Posts: 913
Monroe,CT
Bambam Offline
Bambam  Offline
Joined: Dec 2003
Posts: 913
Monroe,CT
I have from a reliable source that any seatbelt issue will be taken care of by the dealer for the life of the car.


07 DMAX CC 4x4 ~ Synthetics in the driveline, Delo XLE 15w40 in the sump.
Dirt Bikes and a Harley for the summer!
Ski-Doo for the winter.



Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4463942
07/19/17 11:42 AM
07/19/17 11:42 AM
Joined: Oct 2005
Posts: 4,633
Atlanta
DuckRyder Offline
DuckRyder  Offline
Joined: Oct 2005
Posts: 4,633
Atlanta
There is a TSB for that code on several Fords, have a look in AllData. IIRC the fix is to clean the under seat connectors and tape the connector back on the wire for strain relief...

Still have to get to doing it on the Ranger.


Robert
  • 2007 Toyota Prius Touring
  • 2005 Honda Civic Sedan
  • 1972 Ford F100
Re: Seat belt pretensioner fault code. [Re: Bambam] #4464212
07/19/17 04:01 PM
07/19/17 04:01 PM
Joined: Jun 2005
Posts: 11,623
Santa Barbara, CA
bdcardinal Offline
bdcardinal  Offline
Joined: Jun 2005
Posts: 11,623
Santa Barbara, CA
Originally Posted By: Bambam
I have from a reliable source that any seatbelt issue will be taken care of by the dealer for the life of the car.


Negative. Ford only covers seatbelts and airbags during the NVLW bumper to bumper period. Anything beyond that would be from a recall.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Seat belt pretensioner fault code. [Re: bdcardinal] #4464289
07/19/17 06:12 PM
07/19/17 06:12 PM
Joined: Nov 2004
Posts: 7,808
Texas
GMBoy Offline
GMBoy  Offline
Joined: Nov 2004
Posts: 7,808
Texas
Originally Posted By: bdcardinal
Originally Posted By: Bambam
I have from a reliable source that any seatbelt issue will be taken care of by the dealer for the life of the car.


Negative. Ford only covers seatbelts and airbags during the NVLW bumper to bumper period. Anything beyond that would be from a recall.



Agree. No automaker covers seat belts for life.

Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4464773
07/20/17 09:47 AM
07/20/17 09:47 AM
Joined: Jul 2005
Posts: 11,396
NorthEast
Vikas Offline
Vikas  Offline
Joined: Jul 2005
Posts: 11,396
NorthEast
Quote:
No automaker covers seat belts for life.

Has Honda stopped their lifetime coverage for seat belts?

Re: Seat belt pretensioner fault code. [Re: Vikas] #4465615
07/20/17 10:03 PM
07/20/17 10:03 PM
Joined: Nov 2004
Posts: 7,808
Texas
GMBoy Offline
GMBoy  Offline
Joined: Nov 2004
Posts: 7,808
Texas
Originally Posted By: Vikas
Quote:
No automaker covers seat belts for life.

Has Honda stopped their lifetime coverage for seat belts?


Excellent correction. I was not aware of this. I researched it and found this but don't know the year and if it's still accurate:

https://owners.honda.com/Documentum/Warranty/Handbooks/awl26998.pdf

Refer to page 31. It doesn't include abuse, accident damage etc. Just seatbelt components that's fail during normal use. It is not specific if it covers the pretensioners or just the actual seatbelts themselves. I also read online MANY people being denied replacements buy the dealer for various reasons.

Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4465636
07/20/17 10:20 PM
07/20/17 10:20 PM
Joined: Nov 2004
Posts: 7,808
Texas
GMBoy Offline
GMBoy  Offline
Joined: Nov 2004
Posts: 7,808
Texas
I found the latest Honda seatbelt warranty. They only cover BASIC seatbelts NOT any SRS parts.

This example is of a 2017 Accord warranty:


Page 28 for details:

http://owners.honda.com/Documentum/Warra...__KA__FINAL.pdf


Time Period
This warranty’s coverage begins on
the same date as the New Vehicle
Limited Warranty (see page 9), and
continues for 15 years or 150,000
miles, whichever comes first.
Warranty Coverage
Honda will, at its option, repair or
replace any Honda seat belt
component that fails to function
properly during normal use. This
includes all parts and labor charges



This Warranty Does Not Cover:
• Replacement of a properly functioning
seat belt assembly
strictly for cosmetic or comfort
reasons.
• Failure caused by abuse,
alteration, accidental damage,
misuse, or malfunction resulting
from a collision.
• Components of the Supplemental
Restraint System (SRS - front
airbag) that interact with, or act
upon, the vehicle's seat belts (such
as, but not limited to, the latch
sensor, the belt pretensioners, or
the ECU). These components are
covered under the New Vehicle
Limited Warranty.

Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4486974
08/12/17 11:22 PM
08/12/17 11:22 PM
Joined: Aug 2006
Posts: 9,888
Central Washington
Colt45ws Offline OP
Colt45ws  Offline OP
Joined: Aug 2006
Posts: 9,888
Central Washington
So I finally looked at this. I got my laptop setup again and datalogged the Ohms that the RCM was reading for the driver pretensioner. It was up to 11 now. I unplugged the connector, still 11 ohm. (Seems to be its max reading for open circuit.)
I jumpered the wiring harness with a piece of wire and got 0 ohms on the screen. So the wiring is all good.
Next I tried to resistance check the pretensioner. 0 ohms too. I thought that was really odd.
When I actually looked at the connector in the pretensioner though, I discovered a metal tab that shorts the terminals together so you can't test it like that.
I cut the plug for one out of my junk car, stripped the wires a bit and plugged it in. 13ohm. So, definitely a bad pretensioner. I tested a good one and it was 2 ohm.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 86k
Pennzoil Conv HM 5W30, Fram XG2
Re: Seat belt pretensioner fault code. [Re: Colt45ws] #4486981
08/12/17 11:38 PM
08/12/17 11:38 PM
Joined: Oct 2009
Posts: 3,947
Ohio
L_Sludger Offline
L_Sludger  Offline
Joined: Oct 2009
Posts: 3,947
Ohio
Colt, I applaud your diligence in diagnosing the faulty part. Though it seems that you went a little overboard with your testing methodology, haha.


too many cars and oil combinations to list in 150 characters or less
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