Ive been trying to trace down a issue with the airbag warning light flashing. The seatbelt light is flashing also.
The airbag code is 53. If i search it i get the front crash sensor..I replaced it with a new sensor and pigtail. Other than that the search leads me to believe it could be anything.
Ive checked and clean every connection that i could find. I havent removed the center console yet to check the module.
I did buy the truck last fall as a winter/work truck. The issue started a couple of months after i started driving it.
Not sure if the module would just go bad.

 

I found that code seems to be the sensor for the earlier vehicles,, but I found this list that says something different for 2008.

2004-2011 ALL TRUCKS and VANS

Scan Flash

B1231 13 Longitudinal Acceleration Threshold Exceeded (Crash Data Memory Full)
B1317 Battery Voltage or VSS (12 volts) High
B1318 Battery Voltage or VSS (12 volts) Low
B1342 12 RCM is Faulted
B1869 Airbag (SRS) Indicator Inoperative
B1870 Airbag (SRS) Warning Indicator Circuit Short Circuit to Battery
B1884 18 PAD Warning Lamp Circuit Failure
B1890 18 PAD Warning Lamp Circuit Short Circuit To Battery
B1891 53 Airbag (SRS) Tone Warning Indicator Circuit Short Circuited to Battery Or Ignition
B1892 53 Airbag (SRS) Tone Warning Indicator Circuit Short Circuited To Ground or Earth Or Open Circuit
B1916 15 Driver Airbag (SRS) Circuit Short Circuited To Battery Or Ignition
B2290 16 Occupant Classification System Fault
B2292 33 Restraint System Safety Belt Pretensioner Status (Driver Pretensioner Circuit Failure)
B2292 34 Restraint System Safety Belt Pretensioner Status (Passenger Pretensioner Circuit Failure)
B2293 19 Restraint System Airbag (SRS) Status (Driver Front Airbag (SRS) Circuit Failure)
B2293 21 Restraint System Airbag (SRS) Status (Passenger Front Airbag (SRS) Circuit Failure)
B2295 22 Restraint System Side Airbag (SRS) Status (Driver Seat Side Airbag (SRS) Circuit Failure)
B2295 23 Restraint System Side Airbag (SRS) Status (Passenger Seat Side Airbag (SRS) Circuit Failure)
B2296 42 Restraint System Crash or Impact Sensor Status (Front Impact Severity Sensor Circuit Failure)
B2296 43 Restraint System Crash or Impact Sensor Status (Driver Side Crash or Impact Sensor Circuit Failure)
B2296 44 Restraint System Crash or Impact Sensor Status (Passenger Side Crash or Impact Sensor Circuit Failure)
B2434 51 Driver Safety Belt Buckle Switch Circuit Short Circuit to Ground or Earth
B2435 51 Driver Safety Belt Buckle Switch Resistance Out of Range
B2438 52 Passenger Safety Belt Buckle Switch Circuit Short Circuit to Ground or Earth
B2439 52 Passenger Safety Belt Buckle Switch Resistance Out of Range
B2477 Module Configuration Failure
B2691 51 Driver Safety Belt Buckle Switch Circuit Fault
B2692 52 Passenger Safety Belt Buckle Switch Circuit Fault
B2909 16 Belt Tension Sensor Fault
C1414 15 Incorrect Vehicle Identification Code
C1947 49 Seat Position Switch Circuit Short Circuit to Ground or Earth
C1948 49 Seat Position Switch Circuit Resistance Out of Range
C1981 49 Seat Position Switch Circuit Fault

 

As far as i know there isnt a tone for the airbag. If there is wouldnt it be in the dash like the seatbelt chime?
Either way...im not sure where to look.
A damaged wire where?

 

Do you have a button on the pass side with a light that lets you disable the pass side airbag? Does the light work if you disable it? I found somewhere that if the bulb blows out it sends out the same sort of code.

 

No...Its a crew cab. So a sensor on the passenger front seat activates that airbag. It works as it should. The light on the center benzel cycles as it should on start up and ive placed objects about 10 to 15 lbs on the seat and then the light comes on deactivating the passenger airbag.
Im thinking a wire ....maybe a mouse chewed somewhere.
Im only been trying to resolve this because its due for inspection in May.

 

The airbag system is not part of state-mandated safety inspections.

The SRS system has its own chime signalling system, either in the cluster or in the RCM. I didn't dig into it too far.

LFC53 on an 08 F150 needs to be read off the list that Dave provided. Then, the appropriate diagnostic procedure (in the shop manual) needs to be followed to pinpoint the fault, whether it's a wiring concern to the RCM or if it's an issue internal to the module.

Because the risk of injury is very high for someone putzing around the airbag system who doesn't know what they're doing, it's HIGHLY recommended you take to a dealership or qualified independent shop for diagnosis and repair.

Always disconnect the battery negative terminal and wait one minute before doing ANYTHING related to the airbags, that will keep you out of most of the troubles.

 

Its part of the safety inspection here where i live. As far as i know...if it comes with the vehicle from factory ie.....seatbelts, mirrors, lights, smog equip., airbag...actually here you cant have rust holes.

Im aware of the precautions working on the airbag system.
But i would think code 53 as stated above, should be something that i could trace down.
Id like to know what wires to look for.

 

Oh, I see you're in Massachusetts. Too bad....

Best advice I can give you is to get the Ford vehicle service manual and drawings and follow the procedure that is laid out in the manual for diagnosing the fault.

Good luck!

 

yeah...this state goes overboard with everything it does.
Today one of my employees tried to get his truck inspected and they wouldn't even look at his truck because of some rust around the rear wheel wells.
Then go down to Connecticut there is no inspection.
If I can't trace it down I'll have to bring it to a local guy that just works on vehicle electronics.

 

Here's 3 pages of diagrams for it.

http://www.revbase.com/BBBMotor/Wd/D...dPdf?id=155949

It does show a chime on the 3rd page down.

 

Thank you Franklin.
This is what I need to try and track the problem down.
Just have to find the time now!

 

For anybody interested...I have figured out my problems with the airbag/ seatbelt light and chime issues.
It was the gauge cluster.
After spending a weekend checking all the wiring i could find...thinking a mouse damaged something....I started looking at the cluster and researching other people issues with the cluster.

 

Did you get into anymore detail on what caused it? Is there a tone or warning indicator in the cluster and there was a problem with it?

 

This whole thing started with the airbag and seatbelt light being on..seatbelt flashing with the chime. The air bag was flashing 53 with basically is an electrical problem other than specific codes. Other
cluster problems were...fuel gauge reading either past full or below empty randomly. The loud beep from opening a door while the engine is running would happen randomly. With so many problem on the cluster itself i figured to try a used one of the same exact year and model. So all is good for now. Also a new cluster is expensive.