Air Bag Light

[BigSpenc]

I changed the battery out on my 94 Bronco, and when I hooked the battery back up the airbag light started flashing. I stopped by a garage to have it reset and they said that they didn't have the scanner to reset the airbag light and that they thought it was reset manually though they didn't know how. Does anyone know if there is a way to manually reset the Air Bag Light or do I need to find someone that has the correct scanner.

 

[Xxxyank]

It's not a scanner thing from what i been told. The first 30 seconds you turn your vehicle on your airbag system does a system test. if there is a fault present in the system, the light remains on, end of story.

Now why that light came on because you swapped out a battery is beyond me. I have heard people bypassing a fusable link that would short out occationaly. But I have never done it or do i know if that could even be your problem. But i'm sure there is someone here who can help.

Good luck

 

[miesk5]

yo BigSpenc,

Is battery fully charged and cable connectors clean & tight?

Air Bag 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.

WARNING; Read all Safety Info; Such as, remove a battery terminal (Remove both) then wait 30 minutes before attempting any work on the airbag circuits; I have found a few vehicles that had an aftermarket component in it that had a 12v DC or higher re-chargeable battery

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 (No Fault Code): All Primary Air Bag Sensors Disconnected

Testing, in a 94 Video; "...how to read (light fault codes); applies to 94-96 Broncos..."; MIESK5 Note, Suggest Right Clicking this Hot Link & Open in New Window

Source: by pfun41 at http://www.youtube.com/user/pfun41#p/search/22/wLTWMukybZE

Hopefully it is Code 12, Low Battery Voltage bec new batty was not fully charged when you bought it and has not reached max charge yet.