Airbag error code "45" ---> what is it? - Ford Bronco Forum
 
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post #1 of 17 (permalink) Old 05-30-2007, 12:08 PM Thread Starter
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Question Airbag error code "45" ---> what is it?

On my drive into work today, when I came to a stop, my air bag light within the dash cluster started blinking. Each time I came to a stop, it seemed that the air bag light would repeat the error.

I counted the "blinks" and the error code is definitley confirmed as error code 45. I went to the fordfuelinjection site thinking I may find the error code there, but did not see any airbag error codes. So, then I tried searching on here using "error code 45" and "air bag 45" but did not come up with any decent hits (maybe I'm not using the right search terms?).

I had already replaced my clockspring at the end of 2006 and all of the functions operated by the clockspring still work 100%.

I'm baffled by this new problem. What is an air bag error code 45 and what is the solution?


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post #2 of 17 (permalink) Old 05-30-2007, 02:23 PM
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I think it's the clock spring.

95 XLT Stock
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post #3 of 17 (permalink) Old 05-30-2007, 04:06 PM
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I concur. mine has been doing that since i got it. black tape takes care of it



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No, I don't have this problem. Money grows on trees here in Michigan, and my Bronco gets 45 mpg. It emits sunshine and a light berry scent, and it never needs service or parts.
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post #4 of 17 (permalink) Old 05-30-2007, 05:30 PM Thread Starter
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Nope - it's NOT the common clockspring error code. Like I said in my previous response, I already replaced the clock spring and all of the functions controlled by the clockspring all work 100%.

After doing some more research and searching on this site trying all different terms in the search engine - I came across a thread that had this info:

Quote:
Originally Posted by bigric

OK, here's the entire air bag code set:

— No Air Bag Indicator — Inoperative Indicator Circuit or No Battery Positive Voltage to Air Bag Diagnostic Monitor

— Continuous Air Bag Indicator — Air Bag Diagnostic Monitor Disconnected or Inoperative

12 Low Battery Voltage
13 Air Bag Circuit Shorted to Ground
14 Front Air Bag Sensor and Bracket Circuit Shorted to Ground
21 Rear Air Bag Sensor and Bracket Not Mounted to Vehicle Properly
22 Rear Air Bag Sensor and Bracket Output Circuit Shorted to Battery Voltage
23 Rear Air Bag Sensor and Bracket Circuit Input Feed/Return Circuit Open
24 Rear Air Bag Sensor and Bracket Output Feed/Return Circuit Open
32 Driver Side Air Bag Circuit High Resistance or Open
34 Driver Side Air Bag Circuit Low Resistance or Shorted
41 RH Front Air Bag Sensor and Bracket Feed/Return Circuit Open
42 LH Front Air Bag Sensor and Bracket Feed/Return Circuit Open
44 RH Front Air Bag Sensor and Bracket Not Mounted to Vehicle Properly
45 LH Front Air Bag Sensor and Bracket Not Mounted to Vehicle Properly
51 Air Bag Diagnostic Monitor Internal Thermal Fuse — Fuse Blown Due to Intermittent Short to Ground
52 Backup Power Supply — Voltage Boost Fault
53 Front Air Bag Sensor and Bracket Circuits Resistance to Ground or Air Bag Diagnostic Monitor Fault

— Rapid Continuous Flashing of Air Bag Indicator (No Fault Code) All Primary Air Bag Sensors Disconnected
~~~~~~~~~

Based on the above airbag error code listing, the airbag error code "45" is: "LH Front Air Bag Sensor and Bracket Not Mounted to Vehicle Properly"

Now that I know this, once I get home, I'll pop the hood and check to see WTF is going on... maybe the bracket is loose and there is not a proper ground or maybe the connector came loose or is corroded...

So, if anyone else is seeking airbag codes - there ya go! (THANKS to bigric's prior response!!)

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post #5 of 17 (permalink) Old 10-16-2008, 12:53 AM
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I have the same error popping up. Where you ever able to find what was causing it?

I'm going to do some investigating tomorrow in the daylight, but if you could point me in a general area that'd be great!

I need a truck...

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45: LH Front Air Bag Sensor and Bracket Not Mounted to Vehicle Properly
Sensors Basic Diagram & Locations in 94-96; IMPORTANT!!!; "...Disconnect the positive battery cable." - "...The sensors are located in the vehicle in several places. A primary crash sensor and bracket are located on the left and right front radiator supports. ..." read more

component location and description list
Source: by Chilton via autozone.com
Check: connector first and see if it or wire strands, etc. is corroded or disconnected; damaged sensor; corrosion or damage @he sensor mounting surface.

& other info for future reference; Sensor, Falsing Location, pass. side B pillar pics in a 96
Source: by Tool38 (Bronc)

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post #7 of 17 (permalink) Old 10-16-2008, 01:29 PM
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huh? when i got that code it was the module, somehow i got a leak inside that let water into the little blue box under the dash behind the door buzzer, i took it out cracked it open and it was char black, the circuit board was fried, so i left it out, i could probly get it in a j/y but no bother, did you get yours fingered out?


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post #8 of 17 (permalink) Old 10-16-2008, 01:57 PM Thread Starter
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Quote:
Originally Posted by ThetaTauMan View Post
I have the same error popping up. Where you ever able to find what was causing it?

I'm going to do some investigating tomorrow in the daylight, but if you could point me in a general area that'd be great!
Yep.

(looks like I forgot to update the thread - D'OH!)

When I took the rig home that day, I popped the hood and looked at the air bag sensor on the LH side at the radiator support. It turns out that somehow the connector that plugs into that sensor had become loose (probably from driving on the shitty potholed/imperfected NJ roads). I had disconnected the battery, unplugged the connector all the way, sprayed some electrical contact cleaner in both the connector and the "socket" on the sensor, let those areas dry, then plugged the connector back into the sensor. I reconnected the battery and the error code never came up again after making sure the connector from the harness to the sensor was 100% secure.

Try doing that and report back. If doing the above does not work, when you unplug the connector, check out the contact points of the actual plug and/or connection on the sensor. Be sure they are not oxidized or do not have any debris coating the surfaces (this will interfere w/ proper contact when plugged together). Another thing to check would be to make sure the actual wires in the conduit or harness were not chafed, cut or broke somehow - if you do find such a problem, tape up the chafed areas to avoid any other metal to metal contact OR if the wires are broke, splice them back together and tape them up.


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post #9 of 17 (permalink) Old 10-16-2008, 04:54 PM
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This helped out, pointed me right to the problem
Quote:
Originally Posted by miesk5 View Post
Source: by Chilton via autozone.com
Check: connector first and see if it or wire strands, etc. is corroded or disconnected; damaged sensor; corrosion or damage @he sensor mounting surface.
The wires all look fine until i popped off the grill for a closer inspection found the real problem....besides that leaf that is lodged in there



It matches all the other rust on my truck...

On a good point, the RH side looked fine.


All the wires and connections were tight and fine. So i am assuming that that sensor and wire coming out of it is the problem.

I need a truck...

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post #10 of 17 (permalink) Old 10-16-2008, 07:18 PM
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yep gonna need a new sensor or so it looks, if the new sensor dont work then you prolly had what i had, look at my previos post in this thread if a new sensor dosent fix it


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Originally Posted by jopes
11:47 pm: hand pack it on the shaft. it's something you should be good at
Quote:
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post #11 of 17 (permalink) Old 10-17-2008, 09:35 AM
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Quote:
Originally Posted by yoomooman View Post
huh? when i got that code it was the module, somehow i got a leak inside that let water into the little blue box under the dash behind the door buzzer, i took it out cracked it open and it was char black, the circuit board was fried, so i left it out, i could probly get it in a j/y but no bother, did you get yours fingered out?
Yes, but I posted the most likely causes for his first; if not the sensor/conn/wiring, then the TS goes back along w/da wires to da Mod.; as shown in Steve's diagrams(s)

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post #12 of 17 (permalink) Old 05-27-2009, 01:14 AM
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air bag code 51

riginally Posted by bigric

OK, here's the entire air bag code set:

No Air Bag Indicator Inoperative Indicator Circuit or No Battery Positive Voltage to Air Bag Diagnostic Monitor

Continuous Air Bag Indicator Air Bag Diagnostic Monitor Disconnected or Inoperative

12 Low Battery Voltage
13 Air Bag Circuit Shorted to Ground
14 Front Air Bag Sensor and Bracket Circuit Shorted to Ground
21 Rear Air Bag Sensor and Bracket Not Mounted to Vehicle Properly
22 Rear Air Bag Sensor and Bracket Output Circuit Shorted to Battery Voltage
23 Rear Air Bag Sensor and Bracket Circuit Input Feed/Return Circuit Open
24 Rear Air Bag Sensor and Bracket Output Feed/Return Circuit Open
32 Driver Side Air Bag Circuit High Resistance or Open
34 Driver Side Air Bag Circuit Low Resistance or Shorted
41 RH Front Air Bag Sensor and Bracket Feed/Return Circuit Open
42 LH Front Air Bag Sensor and Bracket Feed/Return Circuit Open
44 RH Front Air Bag Sensor and Bracket Not Mounted to Vehicle Properly
45 LH Front Air Bag Sensor and Bracket Not Mounted to Vehicle Properly
51 Air Bag Diagnostic Monitor Internal Thermal Fuse Fuse Blown Due to Intermittent Short to Ground
52 Backup Power Supply Voltage Boost Fault
53 Front Air Bag Sensor and Bracket Circuits Resistance to Ground or Air Bag Diagnostic Monitor Fault

Rapid Continuous Flashing of Air Bag Indicator (No Fault Code) All Primary Air Bag Sensors Disconnected
------------------------------------------------------------------------------

After searching, this is the one of the examples I could find. This is from post #4. My rig is flashing a #51. I do not know where to start looking for this fuse. Would it be under the dash or hood? I have always played with the 78 & 79 but I am trying my hand with a 11/93 (model year 94).
I read alot of things on hear but do little posting or asking. Thank you in advance for your help. Would an "Intermittent Short to Ground" mead a chaffed wire?
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post #13 of 17 (permalink) Old 05-27-2009, 08:39 AM
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"...Would an "Intermittent Short to Ground" mead a chaffed wire?..."
Yep!

The thermal fuse is located inside the air bag module ,,,and it not serviceable,,,you have to replace the air bag module AFTER finding short.
This is for a Taurus, but similar; my 96's EVTM/PCED disc is @ home so maybe this will help for now.
Diagnostic Trouble Code 51
Normal Operation
NOTE: The diagnostic monitor contains an internal thermal fuse that is not serviceable. The thermal fuse is controlled by the diagnostic monitor. The diagnostic monitor will blow the thermal fuse whenever a short on the deployment circuits occurs. The thermal fuse does not blow because of excessive current flowing through it. DO NOT attempt to jumper out the thermal fuse with a circuit breaker or any other type of fuse.
WARNING: DO NOT INSTALL A NEW DIAGNOSTIC MONITOR UNTIL THE SHORT HAS BEEN LOCATED AND CORRECTED. IF A SHORT TO GROUND HAS NOT BEEN LOCATED AND CORRECTED, THEN THE SHORT TO GROUND IS INTERMITTENT AND IS NOT PRESENT AT THIS TIME. INSTALLING A NEW DIAGNOSTIC MONITOR WITH AN INTERMITTENT SHORT IN THE SYSTEM WILL RESULT IN REPEAT BLOWN DIAGNOSTIC MONITORS AND REPEAT SERVICE.

The diagnostic monitor measures the voltages at the diagnostic monitor connector Pins. When certain air bag deployment wires are shorted to ground (heavy lines illustrated in the electrical schematic above), the system may become susceptible to unwanted deployment of the air bag(s). The diagnostic monitor senses a short to ground on any of these circuits and helps prevent unwanted air bag deployment by blowing the diagnostic monitor thermal fuse. Blowing this fuse removes all power (battery and back-up power) from the air bag deployment circuits. While the short to ground exists, the monitor will flash diagnostic trouble code 13 or code 14, depending on where the short appears (see code 13 and 14 for more details). If the short to ground is intermittent and temporarily corrects itself, the diagnostic monitor will flash code 51.

NOTE: If the short to ground returns, the higher priority codes 13 or 14 will be flashed instead of 51.

If the Air Bag indicator is flashing code 51 and a short to ground has not been serviced, this means that an intermittent short to ground exists in the air bag system. The diagnostic monitor should be replaced only after service of the intermittent short has been completed.

Some service tips for finding an intermittent short to ground are:

1. Consult OASIS (Restraint Systems service Code 104000) for up to date diagnostics and descriptions of wiring concern locations for the vehicle (VIN number) you are working on. OASIS is updated daily using concern descriptions from engineering and Dealership Service sources.
2. Inspect wiring and harnesses in areas where they pass through or are located next to metal components (i.e. engine compartment bulkhead, body sheet metal, component mounting brackets, etc.)
Code 51 After Air Bag Deployment
NOTE: Diagnostic monitors can withstand several air bag deployments and do not need to be replaced after every deployment. Only replace the diagnostic monitor if it is damaged.
Occasionally, after an air bag deploys, the internal wiring of the air bag(s) may become shorted to the metal housings of the air bag(s). This internal air bag short is detected by the diagnostic monitor as a short to ground in the air bag deployment wiring. Since the diagnostic monitor is still operating immediately after most deployments, the monitor will detect the short and will flash code 13 and blow its internal thermal fuse. After the deployment, as the air bag(s) cool off, the internal shorted wiring may correct itself, therefore the short to ground will no longer exist and the diagnostic monitor will flash code 51. If a vehicle with a deployed air bag is flashing code 51, inspect the vehicle for crushed wiring, sensors, etc. and replace as required. If no damage is found, assume that the deployed air bag was the cause for the intermittent short and replace the diagnostic monitor when the new air bag(s) are installed.

After a short to ground has been corrected, the diagnostic monitor will flash out Diagnostic Trouble Code 51. Diagnostic Trouble Code 51 indicates that the thermal fuse inside the diagnostic monitor is blown and the short to ground no longer exists.

If a short to ground has not been located and serviced (short to ground corrected itself), consult OASIS for potential wiring shorts.

If a short to ground has been correctly located and serviced then replace diagnostic monitor. DO NOT replace diagnostic monitor until the short to ground has been positively located and serviced. Replacing diagnostic monitor before servicing a short to ground will result in repeat service.

-------------

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post #14 of 17 (permalink) Old 05-27-2009, 12:28 PM
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miesk5, Thank you. I do not know about these newer vehicles and airbags. I will try to follow all the wiring to see if I can locate the short. The air bag has NOT deployed. If I am understanding correctly, both battery power and reserve power have been made inactive and I should not be able to deploy the airbag until short has been found. Once I locate the short and fix, do I run the risk of the airbag deploying before I can get back in? Is the DIAGNOSTIC MONITOR a dealer item only and about what kind of cost? What is OASIS? Is that something I can find online or dealer only?
Thank you again for the answer.
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post #15 of 17 (permalink) Old 05-27-2009, 02:56 PM
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yo! YW!
Online Automotive Service Information System (OASIS), Ford; "...accesses information stored in Ford databases to give access to vehicle information for 10 years (recalls will remain open until they are completed). An OASIS inquiry must be performed on every vehicle in for service. The information in OASIS includesGeneral Vehicle/Warranty Information: Enter the VIN to access Vehicle description (model year, engine size and calibration number, transmission and axle code); Warranty start date, build date, Open Field Service Actions (Recalls, CSPs, SSIs); ESP coverage, Warranty repair history, AWA repair counter..." read more
Source: by fleet.ford.ca
-----------------
Ask your dealer's serv mngr for info and correct OASIS service Code & diagnostics for your yr/model
Next, look at the Wiring Diagram in the diagnostics report for possible short locations as shown in the one in this URL (for Taurus) http://www.fordforums.com/f138/air-b...-3-0-a-164737/
It says there to look for a short(s) where the HEAVY DARK LINES are in the wiring diagram

also the OASIS should provide pni-point troubleshooting steps such as (Aeorstar example);
PINPOINT TEST C5: FAULT INDICATION--AIR BAG INDICATOR FLASHES FAULT CODE51--PROBABLE FAULT--LOSS OF BATTERY POWER TO AIR BAG FIRING CIRCUIT C5 CHECK FOR SHORT TO GROUND IN LH B-PILLAR PANEL SAFING SENSOR o Disconnect LH B-pillar safing sensor. o Measure resistance from diagnostic monitor connector Pin 15 (Circuit 612, P/O) to ground. o Is resistance less than 10 ohms? Yes LOCATE and SERVICE short to ground in Circuit 611 (W/O). REPLACE open fuse. RECONNECT system. VERIFY system. REACTIVATE system. No GO to .
--------------------------------------------------------------------------------
PINPOINT TEST C6: FAULT INDICATION--AIR BAG INDICATOR FLASHES FAULT CODE51--PROBABLE FAULT--LOSS OF BATTERY POWER TO AIR BAG FIRING CIRCUIT C6 CHECK FOR SHORT TO GROUND IN CIRCUIT 612 (P/O) o Measure resistance from diagnostic monitor connector Pin 23 (Circuit 612, P/O) to ground. o Is resistance less than 10 ohms? Yes LOCATE and SERVICE short to ground in Circuit 612 (P/O). REPLACE open fuse. RECONNECT system. VERIFY system. REACTIVATE system. No GO to .
------
OK HERE WE GO!
The diagram for the Taurus is = to the following wiring diagram by STEVE83!!!!!!!!!!!!!!!!!
Circuit Overview & Codes for 94-96
Source: by Steve83
So you can use the TAURUS one to look for shorts or if diff (I have to work now so can't look at both to see if they are Exactly the same); look for similar wires in Steve's diagram.http://www.supermotors.net/vehicles/...media/472207_1

-
Sensor, Falsing Location, pass. side B pillar pic in 94-96
Source: by Steve83 http://www.supermotors.net/clubs/sup...y/media/268083

Sensor, Front Location & pics in a 96; on the left and right front radiator supports
Source: by ThetaTauMan (Rob, UTURNOB163) at FSB http://www.fullsizebronco.com/forum/...ad.php?t=96833

Sensors Basic Diagram & Locations in 94-96; IMPORTANT!!!; "...Disconnect the positive battery cable." - "...The sensors are located in the vehicle in several places. A primary crash sensor and bracket are located on the left and right front radiator supports. The safing rear air bag sensor is located in the left kick panel in the passenger's compartment. The safing and one of the primary sensors must be activated simultaneously to inflate the air bag..." read more (under license from Delmar Publishers, comb of Chilton/Nichols/Delmar & Haynes); some may be incorrect, as reported by Seabronc, thanks Seabronc! NEW SITE URL!!! MUST REGISTER TO VIEW; select year, make, model, engine size and go to appropriate section
Source: by Chilton via Autozone http://www.autozone.com/autozone/myz...Landing=myZone
----------
Suggest you buy a Ford Electrical and Vacuum Troubleshooting Manual (EVTM/PCED-Powertrain Controls and Emission Diagnosis Manual) CD or DVD from E bay or Fireguy here to make sure of the process to re-install the air bag, etc.
Here it is for ya!
(sorry, doing this piecemeal while I work)
Removal in a 95 (part of his steering wheel replacement)
Source: by Jim E (silent one) at FSB http://www.fullsizebronco.com/forum/showthread.php?t=145142

One example for using the Ford EVTM is for the length of time that Battery needs to be disconnected Before working on da air bag/ ckt; 2 mins or 10 mins?

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--------------------------------------------------------------------------------
"(PINPOINT TEST C6: FAULT INDICATION--AIR BAG INDICATOR FLASHES FAULT CODE51--PROBABLE FAULT--LOSS OF BATTERY POWER TO AIR BAG FIRING CIRCUIT C6 CHECK FOR SHORT TO GROUND IN CIRCUIT 612 (P/O)""
-------------------------------------------------------------------------------------

WOOOOOW, That is alot of typing. I feel as though I should be paying you money for this advise (or at least for all of your typing). The quoted piece above does mention the loss of battery power. Would it make a difference if it sat for 60-90 days with a DEAD battery this past winter? Both of these are VERY good advise and I will have to really study the links that you supplied. It will take me a long time to study these and really understand them. Thank you again for your time and informatin and to steve83 for his help also.
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post #17 of 17 (permalink) Old 05-28-2009, 08:37 AM
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yw, doubt that the DTC 51 is caused by the batty being disconnected; Low/MNo batty V would pop a DTC 12
That pin point test is just an example from an Aeorstar; don't know why that is in there..
best bet is to spend about $7 to $12.00 on the Ford EVTM/PCED... it has saved me much $$$ !!!!


Steve83 is probably gone for good from here now. But his info will continue to help many here.

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