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Air Bag Module Discolored or Marred Covers, Painting Restrictions TSB 95-21-1 for 94-06 Bronco, F Series, & Many Others
Source: by Ford via mustangforums.com
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Air Bag Module Discolored or Marred Covers, Painting Restrictions TSB 95-21-1 for 94-06 Bronco, F Series, & Many Others
Source: by Ford via chiltonsonline.com
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Chime; "...The chime only sounds if 1) the bulb is out AND 2) there's a stored code..."
Source: by Steve83 (Steve, That dirty old truck) at f150online.com
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Component Location pic in 94-96; "...Red: shaped charge; Yellow: airbag; Green: shorting clip inside connector..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
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Connector Location Diagram in a 94 (part of overhead console wiring diagram series); C911 (left vanity mirror lamp), C1048 (E4OD), C913 (day/night mirror auto-lamp sensor), C271 (inertia fuel shut-off), C223 (electronic shift control module), C1012 (MLPS), C1020 ($r70W output shaft speed sensor), C1049 (4R70W), C328 (safing sensor), C404 (DSS/VSS/ABS rear axle sensor), C417 (trailer lamps), C440 (fuel level sender), C220 (to transfer case), C 117 (C6), C127 (neutral safety switch NSS), C161 (hi/low indicator switch), C510 (left front door disarm switch), C299 (RABS valve assembly), C1012 (MLPS), C117, C1025 (C6 for (7.5 & 5.8 over 8500 GVW only), C440 (front fuel tank pump/sending unit Gasoline engines) , C421 (front fuel level tank sending unit Diesel), C403 (chassis cab & 185 in wheelbase only), C427 (rear tank fuel level sender Diesel only), C441 (rear tank fuel level tank sending unit Diesel), C441 (rear tank pump/sending unit chassis cab & 185 in wheelbase only)
Source: by Ford via Ken B (Kenny's 94) at SuperMotors.net
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Diagnostic Codes, 92 Up, Ford
Source: by screwy at clubfte.com
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Diagnostic Monitor Component Identification Video in a 94
Source: by pfun41 at youtube.com
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Diagnostic Monitor Location Diagram in 94-96; "...18 - Air Bag Module..."
Source: by Ford via Steve83 (Steve, That dirty old truck) at SuperMotors.net
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Diagnostic Monitor Location pic in 94-96; as Steve83 pointed-out, "...The module I MIS-labelled as "Airbag" is actually the Wiper Control Module (WCM). The Airbag Diagnostic Module (ADM) is light blue, wrapped in black foam, above the gas pedal..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
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Diagnostic Monitor Location pic in an 94-96; as Steve83 pointed-out, "...The module I MIS-labelled as "Airbag" is actually the Wiper Control Module (WCM). The Airbag Diagnostic Module (ADM) is light blue, wrapped in black foam, above the gas pedal..."
Source: by Ryan M (fireguy50) at fordfuelinjection.com
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Diagnostic Monitor Location, Behind Center of Dash - Ford (No Bronco listed, so use Econoline)
Source: by airbagsystems.com
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Diagnostic Monitor Overview in 94-96; "The air bag diagnostic monitor continually monitors all air bag system components and wiring connections for possible faults in the system. The monitor will display a diagnostic trouble code on the air bag warning indicator if it detects a fault in the air bag system while the ignition switch is in the RUN position.
The monitor performs system diagnostics which is its main function. The air bag diagnostic monitor does not deploy the air bags in the event of a crash! Crash sensors are hard wired to the air bags, and therefore, the sensors determine when to deploy the bags.
The air bag diagnostic monitor illuminates the air bag warning light for approximately six seconds when the ignition switch is turned to RUN and then turns off. This indicates that the air bag warning indicator is operational. If the air bag warning light does not illuminate or if it stays on or flashes at any time, a fault has been detected by the air bag diagnostic monitor..." (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
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Diagnostic Monitor Thermal Fuse Replacement Video in a 94
Source: by pfun41 at youtube.com
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Dis-Arming Video in a 94
Source: by pfun41 at youtube.com
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DTC 32 & Testing Advice; "...Store the airbag FACE-UP under the truck while you work. Remove the clock spring completely, noting which 2 pins in the steering wheel connector are for the airbag AND being careful not to spin it while it's off the column. Then test from one pin to the other. Resistance should be less than 2 Ohms; preferrably close to 0. If it passes, retest it while rotating the assembly back & forth slightly. Resistance should not change..."
Source: by Steve83 (Steve, That dirty old truck) at FSB
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DTC 32, Driver Side Air Bag Circuit High Resistance or Open; "...for a 93 Aerostar, from a Ford PCED/EVTM Service Disc... procedure is similar to Bronco...The diagnostic monitor measures the resistance across pin 10 (Circuit 615, GY/W) and pin 11 (Circuit 614, GY/O) every time the ignition switch is turned to the ON position. Normal resistance across these circuits is between 1.5 and 2.0 ohms. This resistance comes from the air bag itself (approximately 1.0 ohms) and the clockspring windings (approximately 0.25 to 0.5 ohms per winding, two windings in all). If the resistance across these two circuits exceeds 4.0 ohms, this indicates a high resistance and the diagnostic monitor will flash code 32.The connectors for the air bag and the clockspring have metal spring clips that act as shorting bars. These shorting bars are built into the plastic hardshell connectors. The shorting bars are designed to short Circuits 614 and 615 together when the connectors are not mated. Do not attempt to remove the air bag shorting bar and measure the resistance of the air bag..."
Source: by Ford via 96_4wdr at fte
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DTC 32, Driver Side Air Bag Circuit High Resistance or Open; "...indicates that the driver's side airbag circuit has high resistance or is open. In simpler terms, there may be a broken wire. This problem may have some relationship to the horn and cruise control failure that your experiencing as well. Has any work been performed on the steering column or under the dash of your vehicle? In either case, you should have the problem checked out. If the wrong wires get crossed with the airbag wires you could be in for a sudden surprise..."
Source: by Jim G at alldata.com
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DTC 32: Driver Side Air Bag Circuit High Resistance or Open Pinpoint Test in 1994 Bronco/Econoline/F-Series Service Manual
Source: by Ford via ww2.justanswer.com
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DTC 33 TSB BC0326961129 for 94-96 Bronco & F 150; "...WHEN DIAGNOSING AN AIR BAG LAMP FLASH-OUT CODE 33 (PASSENGER SIDE AIR BAG HIGH RESISTANCE OR OPEN) ON A 1994-1996 F150 OR BRONCO THAT IS NOT EQUIPPED WITH A PASSENGER SIDE AIR BAG, CHECK FOR PROPER GROUND FROM PIN 7, CIRCUIT 629, AT THE AIR BAG DIAGNOSTIC MONITOR CONNECTOR C218, TO THE NEGATIVE BATTERY POST; NHTSA #50734 ..."
Source: by Ford via miesk5 at broncolinks.com
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DTC 45: LH Front Air Bag Sensor and Bracket Not Mounted to Vehicle Properly; "...Check: connector first and see if it or wire strands, etc. is corroded or disconnected; damaged sensor; corrosion or damage @ the sensor mounting surface...then the TS goes back along w/da wires to da Mod.; as shown in Steve's diagrams(s)..."
Source: by miesk5 at FSB
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DTC 51 Air Bag Diagnostic Monitor Internal Thermal Fuse,Fuse Blown Due to Intermittent Short to ground; "...In the diagram see the Note: "This shorting bar in the gray diagnostic monitor harness connector, Remove the plastic wedge in the gray connector before checking circuit 824 or 817 for a short to ground." Now, I believe the ckts should be 624 or 617. for da Clock Spring/etc. ckt & Front Sensor ckts..." read more
Source: by Ford via miesk5 at Ford Bronco Zone Forums
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DTC 51 for a 93 Taurus but Similar; includes Wiring Diagram that is Same for Broncos with possible short locations where the HEAVY DARK LINES are in the wiring diagram; read more
Source: by Ford via tbird100636 at fordforums.com
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DTC 51 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. 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..."
Source: by Ford via miesk5 at FSB
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DTC 52 Backup Power Supply Voltage Boost Fault; "... it is a capacitor that is located inside the air bag's diagnostic monitor (AKA computer). When you turn the ignition switch on the air bag computer monitors the voltage at this capacitor. Within about 45 seconds there has to be about 23 volts (yes 23 volts) present. In the air bag computer there is a voltage boost circuit that provides the extra kick to turn the voltage up to that level. The capacitor is a storage device or back-up power supply for the air bag system. If the voltage doesn't reach the correct level the air bag warning light will flash code 52 to alert you that the air bag system is not operating correctly. To find the cause for the failure or bad part will require some diagnostic time..."
Source: by Jim G at alldatadiy.com
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FAQs & Videos, general
Source: by airbagsystems.com
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G-Sensor Harness & Component Location Diagram, Ford Part Numbers, Depictions, etc. from Ford Workshop Manual in 96 Bronco, F-150, F-250, F-350, F-Super Duty Chassis Cab & Motorhome Chassis; use your Browser's SEARCH (or FIND) function to locate what you seek in each Diagram, such as Air Bag or E4OD, etc.
Source: by Ford via thedieselstop.com
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On/Off Switch (a product)
Source: by airbagsystems.com
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Overview in 94-96; "The air bag system is designed to operate in frontal or front angled collisions. The system will activate in a crash with severe frontal deceleration, more severe than hitting a parked vehicle of similar size and weight at 28 mph (45 km/h). The system will sense the severity of the crash rather than vehicle speed so some frontal collisions at speeds above 28 mph (45 km/h) may not be severe enough to require inflation.." 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
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Parts Replacement Chart Search, 94-96 Bronco/Ford truck & other makes;
PARTS THAT MUST BE REPLACED FOLLOWING DEPLOYMENT
Airbag module(s)
Any damaged restraint system part.
PARTS THAT MUST BE INSPECTED AND REPLACED IF DAMAGED
Steering wheel and column
Clock spring
Impact sensors (Replace if sensor mounting bracket or sensor wiring assembly is damaged)
Sensor mounting brackets
Dashboard
Wiring harness and connectors
Any restraint system part or wiring identified by diagnostic check
DISABLE PROCEDURE AND TIME (Always Check the Service Manual)
Disconnect and isolate battery ground cable.
Wait at least 1 minute.
Source: by I- CarŪ i-car.com
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Removal & Installation in a 95 (part of his steering wheel replacement)
Source: by Jim E (silent one) at FSB
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Removal & Installation pics in a 95 (part of his steering wheel replacement)
Source: by Jim E (silent one) at SuperMotors.net
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Sensor Wiring Harness, Chime Module & Component Location Diagram, Ford Part Numbers, Depictions, etc. from Ford Workshop Manual in 96 Bronco, F-150, F-250, F-350, F-Super Duty Chassis Cab & Motorhome Chassis; use your Browser's SEARCH (or FIND) function to locate what you seek in each Diagram, such as Bag, sensor, etc.
Source: by Ford via thedieselstop.com
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Sensor, Falsing Location, pass. side B pillar pic in 94-96
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
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Sensor, Falsing Location, pass. side B pillar pics in a 96
Source: by Tool38 (Bronc) at SuperMotors.net
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Sensor, Front Location & pics in a 96; on the left and right front radiator supports
Source: by ThetaTauMan (Rob, UTURNOB163) at FSB
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Sensor, Front Location & pics in a 96; on the left and right front radiator supports
Source: by ThetaTauMan (Rob, UTURNOB163) at SuperMotors.net
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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
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Snow Plow TSB 96-2-4 (SRS related) for 94-96 Bronco & F150; "...(*) F-SERIES SUPERCAB AND SHORT WHEELBASE MODELS AS WELL AS BRONCO AND ALL COMPACT TRUCKS ARE NOT RECOMMENDED FOR SNOW REMOVAL..."
Source: by Ford via diesel-central.com via web.archive.org
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Snow Plow TSB 96-2-4 (SRS related) for 94-96 Bronco & F150; "...(*) F-SERIES SUPERCAB AND SHORT WHEELBASE MODELS AS WELL AS BRONCO AND ALL COMPACT TRUCKS ARE NOT RECOMMENDED FOR SNOW REMOVAL..."
Source: by Ford via Steve83 (Steve, That dirty old truck) at SuperMotors.net
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Testing Video in a 94
Source: by pfun41 at youtube.com
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Testing Wiring with a Multi Meter, General; Opens, Short, Voltage & Voltage Drop, Continuity & Diodes
Source: by freeautomechanic.com
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Testing, Wiring Diagram, Operation & Troubleshooting for 94-96; "The air bag diagnostic monitor (14B056) continually monitors all supplemental air bag restraint system components and wiring connections for possible faults in the system. If the air bag diagnostic monitor detects a fault in the supplemental air bag restraint system when the key is in RUN, a diagnostic trouble code will be displayed on the air bag indicator, located in the instrument cluster (10849). Performing system diagnostics is the main purpose of the air bag diagnostic monitor.
Note: The air bag diagnostic monitor does not deploy the air bag in the event of a crash.
The LH and RH primary crash sensors are hard wired to the air bag; therefore, the LH and RH primary crash sensors and RH safing sensor and bracket sensor determine when to deploy the air bag.
Features and functions of the air bag diagnostic monitor are described below.
* The air bag diagnostic monitor illuminates the air bag indicator for approximately six seconds when the key is in RUN and then turns the indicator off. This shows that the air bag indicator is operational. If the air bag indicator does not illuminate or the indicator stays on or flashes at any time, a fault has been detected by the air bag diagnostic monitor.
* Diagnostic trouble codes may not be displayed for approximately 30 seconds after the key is placed in RUN. This is the amount of time the air bag diagnostic monitor requires to perform all tests and verify system faults, if present.
* Each diagnostic trouble code (a series of flashes and pauses of the air bag indicator) represents a two-digit number. Each diagnostic trouble code is always displayed at least twice. For example, a diagnostic trouble code 32 is displayed as three flashes, followed by a one-second pause, then two flashes, followed by a three-second pause.
* If a system fault is present and the air bag indicator is malfunctioning, an audible tone will be heard, indicating that system service is required. The tone is a series of five sets of five beeps. This does not indicate a diagnostic trouble code 55. If the tone is heard, the air bag indicator is inoperative and a system fault that requires service is present.
CAUTION: The thermal fuse does not blow (open) 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.
* If a fault exists that makes unwanted air bag deployment possible, the air bag diagnostic monitor has an internal thermal fuse that will blow (open) automatically. This removes all power to the air bag deployment circuit.
* The air bag indicator will flash the appropriate diagnostic trouble code to indicate the suspect circuit. If the indicator is malfunctioning the tone will be heard.
* Diagnostic trouble codes are prioritized numerically so if two or more different faults occur at the same time, the fault having the highest priority will be displayed first. After that fault has been corrected, the next highest priority fault will be displayed.
* The air bag diagnostic monitor includes an internal backup power supply. This feature provides sufficient backup power to deploy the air bag in the event the battery or battery cables are damaged in an accident before safing and primary crash sensors close. The backup power supply will deplete its stored energy approximately one minute after the positive battery cable is disconnected.
Airbag DIagnostic Monitor (ADM) Light Flash Code (LFC) Priority Table
Tone (5 Beeps Repeated 4 Times): Air Bag Indicator Open Circuit with Stored Fault Code(s)
No Air Bag Indicator (Dash Light Out): Inoperative Indicator Circuit or No Battery Voltage to ADM
Continuous Air Bag Indicator: ADM 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: ADM Internal Thermal 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 ADM Fault
Rapid Continuous Flashing of Air Bag Indicator (No Fault Code): All Primary Air Bag Sensors Disconnected"
Source: by Ford via Steve83 (Steve, That dirty old truck) at SuperMotors.net
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