Airbag light is on but no code pulled up at Autozone?

[5.0stang]

The 96 SHO that I have has been in a frontal wreck. The air bag light will come on and flash for a little bit and turn off for a while and repeat.

I went to autozone and got some "service engine" codes but got nothing referring to an airbag problem...why is it still flashing? Any ideas?

Also, off topic...where is the cheapest place to get an IRMC?

 

[95azSHO]

My 95 did this last night. I know I'm having electrical issues. Check your cables, I know for fact mine are bad and need to be replaced also could be a bad ground. First thing to do though is to go somewhere else and have the codes ran again

 

[95azSHO]

Also for the non gearheads like me what the heck is a IRMC?

 

[NebraskaSHO]

I think maybe he meant IMRC which is Intake Manifold Runner Control, No?

 

[95azSHO]

Can I buy a vowel? How can I find out what this alphabet soup is. Sorry 5.0stang did't mean to hijack. Just been searching for a while and got frustrated.

 

[naval-avi8or]

The 96 SHO that I have has been in a frontal wreck. The air bag light will come on and flash for a little bit and turn off for a while and repeat.

I went to autozone and got some "service engine" codes but got nothing referring to an airbag problem...why is it still flashing? Any ideas?

Also, off topic...where is the cheapest place to get an IRMC?

The airbag module flashes the code via the airbag light. It's the same as the EEC IV check engine light in test mode. Just count the flashes and seperators to get the two digit code. When I had a problem with mine I found that the fuse had been removed from the engine bay fuse block. replaced fuse and wahla!

 

[5.0stang]

So next time I'm driving it, I can get a stopwatch and see how many times it flashes and how long it stays and I can find out what is wrong with it?

Thanks for the replies and no worries about the hijack...most of us are still learning

 

[naval-avi8or]

So next time I'm driving it, I can get a stopwatch and see how many times it flashes and how long it stays and I can find out what is wrong with it?

Thanks for the replies and no worries about the hijack...most of us are still learning

No need for a stop watch. The normal flash rate should be fairly noticable. So just count the number of flashes (approx 2 sec apart) for the first digit then there should be pause for aprox 5 sec sperator then count the number off flashes for the second digit. I can't remember any 3 digit codes each full set of two should be your code. If there is only one code you will get the same number over and over.

Example: A DTC 32 is displayed as follows:

flash flash flash - (two second pause) -

flash flash - (five second pause)...

flash flash flash - (two second pause) -

flash flash - (five second pause)...


Post your code and I can let you know what it means.

 

[bracksa]

Your 96 has an OBDII system. All AZ has is a code reader for EMISSION related codes. You need to find someone with a Snap-on scanner or equivalent to read this code. DO NOT CLEAR the code until you repair it. It may be an intermittent problem that comes and goes. If you clear it you erase ALL info to help you fix it.

 

[5.0stang]

Thanks for the "flashing" help...I'll find out this weekend! and let you guys know...

As for the "snap-on" scanner or equivalent...where can I go to get this read...the dealership around here charged 70 bucks to read it. No telling what BS it was filled with...

The emission one was...

 

[bracksa]

Thanks for the "flashing" help...I'll find out this weekend! and let you guys know...

As for the "snap-on" scanner or equivalent...where can I go to get this read...the dealership around here charged 70 bucks to read it. No telling what BS it was filled with...

The emission one was...

Do you have a buddy mechanic or you could come to Colorado and I'll do it for you. 70 bucks is about the normal fee. Todays quality scanners are about $3800.00 plus $1000.00 a year on updates so out weigh the the cost. In perspective it is pretty cheap.

 

[5.0stang]

Thanks for the info

Oh yeah, the airbag light flashed twice and then paused and flashed 4 times...

So 24 is the code.

Also, shortly after it flashed a few times and stayed on? Normal? Or is that something else?

Thanks!

 

[naval-avi8or]

B1924 24 System disarm failure or internal diagnostic monitor GO to Pinpoint Test A. ³

PINPOINT TEST A: DTC B1342/B1924 -- SYSTEM DISARM FAILURE OR INTERNAL DIAGNOSTIC MONITOR FAULT -- LAMP FAULT CODE 24


Normal Operation

When the air bag diagnostic monitor detects a DTC B1913 or B1914 failure, it attempts to disarm the air bag system to prevent inadvertent deployment of the air bag(s) by opening Fuse 16 (10A) feeding air bag diagnostic monitor Pins C276-13 and C276-14. It attempts to open Fuse 16 (10A) by activating an internal solid state switch which shorts the battery feed at Pin C276-13 to sheet metal ground at the air bag diagnostic monitor bracket.

WARNING: UNDER NO CIRCUMSTANCES SHOULD ANOTHER FUSE VALUE BE SUBSTITUTED FOR THE 10A FUSE. ANY FUSE OTHER THAN 10A MAY CAUSE DISARMING FAILURE AND MAY RESULT IN DANGER TO THE OCCUPANTS OF THE VEHICLE. DO NOT ATTEMPT TO REPLACE THE 10A FUSE UNLESS THE AIR BAG SYSTEM FIRST HAS BEEN DEACTIVATED (SEE DEACTIVATION PROCEDURE FOR DETAILS).

The air bag diagnostic monitor will make up to three attempts to open this fuse, spaced one minute apart. If the air bag diagnostic monitor has opened the fuse and thus removed battery voltage at Pin C276-14, a DTC B1867 will be stored. If the air bag diagnostic monitor attempts to open Fuse 16 (10A) three times and fails each time, a DTC B1924 will be stored. After Fuse 16 (10A) is opened or three attempts to open it fail, the air bag diagnostic monitor will not attempt to disarm again until DTC B1924 or B1913 has been serviced and cleared.

The diagnostic monitor also performs several self-tests every time the ignition switch is turned to RUN position. If any of these tests fail, the air bag diagnostic monitor will flash lamp fault code 24. If any of these conditions later resumes normal operation, the DTC B1924 will be stored in background memory.

The failure will either generate a DTC B1924 or B1342, depending on the cause of the failure. DTC B1342 is a special case DTC that will only be retrieved as a result of running on-demand self test from a tester. An intermittent B1342 cannot exist due to this fact. This DTC indicates that an internal microprocessor fault exists in the air bag diagnostic monitor. DTC B1924 covers the other internal air bag diagnostic monitor faults and is handled like any other DTC.


Possible Causes



WARNING: THE BATTERY FUSE MUST BE REPLACED WITH A 10A FUSE. UNDER NO CIRCUMSTANCES SUBSTITUTE ANOTHER FUSE VALUE FOR THE 10A FUSE. ANY FUSE OTHER THAN 10A MAY CAUSE DISARMING FAILURE AND MAY RESULT IN DANGER TO THE OCCUPANTS OF THE VEHICLE. DO NOT ATTEMPT TO REPLACE THE 10A FUSE UNLESS THE AIR BAG SYSTEM FIRST HAS BEEN DEACTIVATED (SEE DEACTIVATION PROCEDURE FOR DETAILS).

System disarm failure or internal diagnostic failure can be caused by:

* an improper fuse value in the battery circuit feeding air bag diagnostic monitor Pins C276-13 and C276-14.

* excessive resistance or opens in the battery feed circuit due to corrosion, poor crimps, etc. The excess resistance could occur in the wiring at the air bag diagnostic monitor harness Pin C276-13, the 10A fuse terminal, or elsewhere in the battery feed circuit.

* a vehicle charging system concern which could prevent the air bag diagnostic monitor from drawing enough current to perform its disarm.

* an internal air bag diagnostic monitor failure on on-board diagnostic or system disarm.

* resistance to ground in the normally open primary crash sensor feed Circuits 621 (W/Y), 619 (PK/W), 624 (Y/W) and 625 (Y/LG).

 

[5.0stang]

Great info...I'm not the "smartest" at all this, so where is the #16 fuse...?

Also how do I "disarm" the system before I try to change the fuses?

That is about what I got from it

 

[naval-avi8or]

So where is the #16 fuse...?

Also how do I "disarm" the system before I try to change the fuses?

That is about what I got from it

Engine fuse box located between the engine and radiator (drivers side).
Under the fuse box cover there is a diagram/listing of the fuse positions.

Deactivation Procedure

1.Record USER 1 and USER 2 pre-set radio frequencies for reprogramming following completion of service procedure.

2.WARNING: THE BACKUP POWER SUPPLY ENERGY MUST BE DEPLETED BEFORE ANY AIR BAG COMPONENT SERVICE IS PERFORMED. TO DEPLETE BACKUP POWER SUPPLY ENERGY, DISCONNECT THE BATTERY GROUND CABLE (14301) AND WAIT ONE MINUTE TO AVOID ACCIDENTAL DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

Disconnect battery ground cable. Refer to «Section 14-01».

3.Wait one minute for backup power supply in air bag diagnostic monitor to deplete stored energy.

4.WARNING: PLACE AIR BAG MODULE ON BENCH WITH TRIM COVER FACING UP TO AVOID ACCIDENTAL DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

Remove driver side air bag module from vehicle as described.

5.Connect Rotunda Air Bag Simulator 105-R0010 or equivalent to vehicle harness at top of steering column.



6.Remove passenger side air bag module as described. Install Rotunda Air Bag Simulator 105-0010 or equivalent on vehicle harness connector in place of passenger side air bag module.

7.Reconnect battery ground cable.


Reactivation Procedure

1.WARNING: THE AIR BAG SIMULATOR MUST BE REMOVED AND THE AIR BAG RECONNECTED WHEN THE SYSTEM IS REACTIVATED TO AVOID NON-DEPLOYMENT IN A COLLISION RESULTING IN POSSIBLE PERSONAL INJURY.

Disconnect battery ground cable. Refer to «Section 14-01».

2.Wait one minute for backup power supply in air bag diagnostic monitor to deplete stored energy.

3.Remove Rotunda Air Bag Simulator 105-R0010 or equivalent from vehicle harness connector at top of steering column.

4.Install driver side air bag module as described.

5.Remove Rotunda Air Bag Simulator 105-0010 or equivalent from vehicle harness connector on passenger side. Reconnect and install passenger side air bag module as described.

6.Reconnect battery ground cable.

7.Prove out system.

8.Reprogram USER 1 and USER 2 preset radio frequencies and set clock.

 

[5.0stang]

A local friend that does body work "fixed" the car and put a new airbag in it, it already has a new airbag. So I guess it isn't as simple as disconnecting the battery, pulling the #16 fuse and replacing it and then plugging the battery back up?

I don't have "airbag tools".

Any insight on some options...the directions confused me.

 

[SHOZ123]

I think once an air bag has been deployed the air bag monitor module needs to be replaced.

 

[5.0stang]

Where is the airbag module? How much do those cost roughly? The fuse and the air bag module need to be replaced then...?

 

[REDSTAR]

I am getting 8 subsequent flashes in my 91. Can anybody tell me what this code means?

 

[SHOZ123]

My guess a code 44?

Center cowl crash sensor not mounted to vehicle correctly.