Home Bronco TSB Summaries Recent Updates Gallery Submit A Link Unique Visitors: 367714	FORD BRONCO -> ELECTRICAL; EEC/PCM, Self-Test, wiring diagrams... -> Air Bag WELCOME to MIESK5's BIG BRONCO LINKS - We now have over 26,000 LINKs! This is a Ford Bronco, Truck & Van Technical & Parts LINKS site developed by the MIESK5 Family & is not affiliated with the Ford Motor Co. in any manner. Although we initially developed this site for 78-96 Big Broncos, information in many Links also applies to F, E Series & Cars. UPDATE; all Links via web.archive may be down; Copy orig. URL & go to http://replay.waybackmachine.org/ to search for the new archived copy Select A Category: Air Bag Module Discolored or Marred Covers, Painting Restrictions TSB 95-21-1 for 94-96 Bronco, F Series, & Many Others Clock Spring DTC 33 TSB BC0326961129 for 94-96 Bronco & F 150 Electronic Modules, Protection From Damage by Static Electricity TSB 88-13-3 for All Light Truck Lines, etc. Select A Link: How the Air Bag Supplemental Restraint System Operates; remove a battery terminal then wait 30 minutes before attempting any work on the airbag circuits; The air bag supplemental restraint system has two main parts. One part is the air bag system with the driver air bag and inflator located in the center of the steering wheel. The second part is the electrical system, which has impact sensors, and a diagnostic module, and backup power supply. The diagnostic module monitors its own internal circuits and the supplemental air bag electrical system readiness, including the impact sensors, the system wiring, the air bag system readiness light, air bag power, and the air bag ignitor. The air bag system uses a readiness light and a tone to indicate the condition of the system. The readiness light is in the instrument cluster. When you turn the ignition to the ON position, this light will illuminate for approximately six (6) seconds and then turn off. This indicates that the system is operating normally. NOTE: Maintenance of the air bag system is not required. A problem with the system is indicated by one or more of the following: the readiness light will either flash or stay lit, or it will not light, or a group of five beeps will be heard. from my 96's Owner's Guide Source: by miesk5 at FSB Air Bag 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 Break-Out Box Overview; "...The breakout box put itself between the engine and the computer, and allowed the user to rapciously access the information being exchanged. They are simply a pinout board, mounted in a box, with associated cabling, like this... You can see the way the cabling hooks into the computer and then bridges into the automobile system. A closer look at the pinout board, little holes numbered to correspond to the numbered wires in the connector:The output is readable with a high impedance (this is IMPORTANT- Digital Volts Ohmeter (DVOM) No cheap knockoffs here, they may fry the computer by introducing their own voltage.) Not as fancy as a scanner which decodes the meaning for you, but valuable nonetheless because you can always look up every meaning of the output signal somewhere. Like on the factory manual CD or in the manual itself! FORD decided to make maximum use of the breakout box, and designed add ons to allow you to look at other systems. Here for example, is a harness (still looking new in the wrapper) that hooks into all the Distributorless Ignition System (DIS). It connects to the sensor connectors... allowing you full access to the signals, even while the engine is running: TFI (thick film Ignition) Yes there is a cable for this. Mine cost me $15. Here is the diagram ...There was an adapter for the breakout box that read the brake codes, AND... AND... did the procedure for properly bleeding them. It was called the anitlock Brake Adapter (ALA) and looks like this when installed in the unbilical for the breakout box: Betwen $125 and $200 on E-bay. Worth every penny if you want to look inside that engine..." Source: by Glacier991 (Chris) at explorerforum.com Chime; "... The chime module as shown on the diagram was actually the module I already removed for the door/headlight courtesy ding. It appears the obnoxious warning alarm comes directly from the box where the airbag control module is, which I'd rather not mess with..." Source: by Di Lullo at FSB Component Location Diagram in 94-96; miesk5 Note, the Rear Air Bag Sensor and Bracket Assembly is also called the RH Safing Sensor; "...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. The Supplemental Air Bag Restraint System is designed to provide increased collision protection for the driver in addition to that provided by the three-point seat belt system. Seat belt use is necessary to receive the full advantages of the supplemental air bag restraint system. The Supplemental Air Bag Restraint System consists of two basic subsystems: Driver's side air bag module assemblies Electrical system, including the left and right primary crash front air bag sensor and bracket, left kick panel safing rear air bag sensor and bracket and the air bag diagnostic monitor. The air bag system is powered directly by the battery. The system can function with the ignition switch in any position, including OFF and LOCK. The system performs three main functions: Detects on impact Carries electrical current to the igniters Monitors the system to determine the readiness The air bag electrical system components are as follows: Air bag diagnostic monitor with integrated back-up power supply Air bag warning indicator Wiring harness and air bag sliding contact Left and right primary crash front air bag sensors with brackets Left kick panel safing rear air bag sensor and bracket miesk5 NOTE; Incorrect; it is in Passeneger B pillar An igniter within the air bag module..." Source: by Chilton 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, Air Bag Sensor, Rear Air Bag Sensor and Bracket Assembly, Air Bag Module, Air Bag Sliding Contact, Air Bag Wiring, etc. Source: by Ford via thedieselstop.com Connector Location, Behind Instrument Panel Diagram in a 96, Page 1 Source: by Ford via Chilton Diagnostic Codes, 92 Up, Ford Source: by screwy at clubfte.com Diagnostic Monitor Connector Location, Behind Instrument Panel Diagram in a 96, Page 1 Source: by Ford via Chilton Diagnostic Monitor Location Diagram in 94-96; "...18 - Air Bag Module..." Source: by Ford via Steve83 (Steve, That dirty old truck) at SuperMotors.net 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 Ryan M (fireguy50) at fordfuelinjection.com 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 Diagnostic Monitor Location, Behind Center of Dash - Ford (No Bronco listed, so use Econoline) Source: by airbagsystems.com 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 Diagnostic Monitor Replacement from my 96's Service Manual Source: by Ford via miesk5 at FSB Diagnostic Monitor Thermal Fuse Replacement Video in a 94; "...WARNING: working on airbag systems is inherently dangerous. should you choose to do anything depicted in the video i cannot be held responsible for anything that may happen. My bronco was flashing a code 51. this stands for "internal adm fuse blown due to intermittant short to ground". the general repair for this is to fix the short and replace the aibag diagnostic monitor. i called the junkyard and they wanted $55! so i decided that instead of replacing the whole thing i would only replace the component that was broken. the thermal fuse in the ADM is 168 deg C, this is a hard to find temp rating so i bought some rated 1 degree lower at 167 deg C. i bought mine from newark.com. the ones i bought ended up being slightly larger that the original so i had to modify the fuse's casing to fit it. in retrospect if you were to do something like this it would be easier to remove the fuse assemby from a ADM in a vehicle with a deployed airbag, just make shure the fuse itself has continuity. if you show the fuse to the people at the junkyard the fuse and they ask what its from make something up or tell them its from a blown airbag module. this method would require less modifying and would look much more professional. applies to 1994-1996 broncos and f150s..." Source: by pfun41 at youtube.com Dis-Arming Video & Connector Location in a 94; "...how to disarm a ford airbag. the backup power supply can still set off the airbag up to a full minute after the battery is disconnected so be sure to give it ample time to deplete.if the bag goes off on you i cannot be held responsible..." Source: by pfun41 at youtube.com Discolored or Marred Covers, Painting Restrictions TSB 95-21-1 for 94-06 Bronco, F Series, & Many Others Source: by Ford via mustangforums.com Discolored or Marred Covers, Painting Restrictions TSB 95-21-1 for 94-96 Bronco, F Series, & Many Others Source: by Ford via Chilton DTC 23 Safing Sensor Circuit; Battery Feed Circuit Open; Battery voltage is provided at diagnostic monitor pin 15 (Circuit 611 W/O) at all times. However, voltage at pin 15 can be as high as 19 volts (as provided by the back up power supply) when the ignition switch is in the ON position and the backup power supply in the diagnostic monitor is charged up. Circuit 612 (P/O) is connected to Circuit 611 (W/O) inside the safing sensor. Therefore, the voltage at pin 23 (Circuit 612 P/O) should be the same as the voltage at pin 15 at all times. The diagnostic monitor compares the voltage available at pins 15 and 23. If the voltage at pin 23 is low, the diagnostic monitor will flash out code 23 to indicate an open between these two circuits. Low voltage at pin 23 can be caused by:An open circuit in the wiring harness in either Circuit 611 (W/O) or 612 (P/O). An open circuit inside the safing sensor across the Circuit 611 (W/O) and Circuit 612 (P/O) wires. miesk5 Note; this was posted in a Visitor Message & may not be available to view without registering at FSB Source: by Ford via miesk5 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 DTC 32 Pin-Point test Source: by Ford via miesk5 at FSB 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 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 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 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 DTC 34 Pin Point Test Source: by RLA2005 via miesk5 at FSB 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 DTC 45; "... 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%.jpg secure. 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..." Source: by Cobra Jet (Phil, cobra-jet-nj) at FSB 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 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 DTC 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; The Airbag Diagnostic Module (ADM) is light blue, wrapped in black foam, above the gas pedal; Check Front Sensor/ wiring First..." READ MORE Source: by miesk5 at Ford Bronco Zone Forums 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 Electronic Modules, Protection From Damage by Static Electricity TSB 88-13-3 for All Light Truck Lines, etc. Source: by Ford via performanceprobe.com FAQs & Videos, general Source: by airbagsystems.com Fuse #5, 10 amp for Air Bag Restraint Location Diagram in Fuse Panel in a 96, from 1996 F-150, F-250, F-350, F-Super Duty Chassis Cab, Motorhome Chassis, and Bronco Workshop Manual; miesk5 Note, this fuse is served by Maxi-Fuse #13, 50 amps in Power Distribution Box Source: by Ford via thedieselstop.com On/Off Switch (a product) Source: by airbagsystems.com 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 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- Car®  i-car.com  Removal & Installation in a 95 (part of his steering wheel replacement) Source: by Jim E (silent one) at FSB Removal & Installation pics in a 95 (part of his steering wheel replacement) Source: by Jim E (silent one) at SuperMotors.net Removal Video in a 94 Source: by pfun41 at youtube.com Safing Sensor Connector Location in Full Body Diagram in a 96 5.0 & 5.8, Page 1 Source: by Ford via Chilton Safing Sensor Connector Location in Full Body Diagram in a 96 5.0 & 5.8, Page 2 Source: by Ford via Chilton Sensor Location Diagram in 94-96; miesk5 Note, the Rear Air Bag Sensor and Bracket Assembly is also called the RH Safing Sensor; The sensors are an electrical switch which reacts to impacts according to direction and force. It discriminates between impacts that require air bag deployment and impacts that do not. When an impact occurs that requires deployment, the sensor contacts close, completing the electrical circuit necessary for the system to operate. 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. Source: by Chilton Sensor Parts Break-Out Depiction Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net Sensor, Front Location & pics in a 96; on the left and right front radiator supports Source: by ThetaTauMan (Rob, UTURNOB163) at FSB Sensor, Front Location & pics in a 96; on the left and right front radiator supports Source: by ThetaTauMan (Rob, UTURNOB163) at SuperMotors.net Sensor, Front Location Connector Location Diagram, Engine Area in a 95 Source: by SeattleFSB (Seattle FSB) at SuperMotors.net Sensor, Front pics from a '94 F150 fit '94-96 F150 & Bronco (possibly others) Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net Sensor, Rear Air Bag Sensor and Bracket Assembly (also called the RH Safing Sensor) Location (is at the base of the RH (passenger side) B Pillar in 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 Sensor, Rear Air Bag Sensor and Bracket Assembly (also called the RH Safing Sensor) Location (is at the base of the RH (passenger side) B Pillar pic in 94-96 Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net Sensor, Rear Air Bag Sensor and Bracket Assembly Location, pass. side B pillar pics in a 96 Source: by Tool38 (Bronc) at SuperMotors.net Sensor, Rear Air Bag Sensor and Bracket Assembly (also called the RH Safing Sensor) Location (is at the base of the RH (passenger side) B Pillar in 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 Source: by Ford via thedieselstop.com 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 (MIESK5 NOTE; WRONG! it is in passenger side B Pillar) 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; Chilton's Notes; Carry a live air bag with the bag and trim cover pointed away from your body. Place a live air bag on a bench or other surface with the trim cover up, away from the surface. After deployment, the air bag surface may contain deposits of sodium hydroxide. This is a product of the gas generant combustion that is irritating to the skin. Wash your hands immediately with a mild soap after handling a deployed air bag. You can only replace, NOT service the crash sensors, sliding contact, diagnostic monitor and air bag modules. If the air bag module has a discolored or damaged trim cover deployment door it must be replaced. Do not attempt to paint it, any paint applied may damage the cover material. This could affect the air bag performance during deployment, which could cause personal injury. Never probe the connectors on the air bags. This may result in air bag deployment. All component replacement must be done with the negative battery cable disconnected for as minimum of one minute before service or replacement is attempted. Source: by Chilton via Autozone 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 Symbols in Wiring Diagrams Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net Testing Wiring with a Multi Meter, General; Opens, Short, Voltage & Voltage Drop, Continuity & Diodes Source: by freeautomechanic.com 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 (also called the Rear Air Bag 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" remove a battery terminal then wait 30 minutes before attempting any work on the airbag circuits Source: by Ford via Steve83 (Steve, That dirty old truck) at SuperMotors.net Video; Clock Spring Test, Removal & Repair, Seatbelt Pre-Tensioner Test & Repair, GENERAL Source: by airbagsystems.com