Airbag control unit with part number 1L2A-14B321-AM

What does the airbag control unit 1L2A-14B321-AM do?

As the central unit of the restraint system (SRS) of Ford, the airbag control unit 1L2A-14B321-AM evaluates the signals from the crash sensors. In the event of an accident it decides within milliseconds which airbags and seatbelt pretensioners to trigger, and checks the system continuously.

It records faults in the fault memory and shows them via the airbag warning light. After an accident it stores crash data and locks itself; the lock is only lifted by the repair.

Why does the control unit 1L2A-14B321-AM fail?

The most common cause with the 1L2A-14B321-AM is crash data stored after an accident, even if no airbag has deployed. Other possible causes include aged electronics, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

Crash data remains in the unit until it has been properly removed. A normal diagnostic tool cannot delete it; this requires the repair.

The other causes relate to ageing, moisture and electrical peaks, for example from a weak battery or a jump start.

A reliable assignment is not possible without reading out the fault memory.

How can you tell that the 1L2A-14B321-AM is defective?

A defect on the 1L2A-14B321-AM becomes visible through the airbag warning light in the instrument cluster, which stays lit permanently or intermittently, through error messages in the instrument cluster, through a lost connection to the diagnostic tool, and through a fault memory that cannot be emptied.

The warning light is the clearest sign. If the control unit is defective, airbags and seatbelt pretensioners may fail to deploy in an emergency.

Even a display that lights up only briefly deserves the same attention as a permanent one, as it indicates a fault in the system.

Which vehicles is the 1L2A-14B321-AM fitted in?

The unit 1L2A-14B321-AM is fitted in these vehicles: Ford Explorer 3 U152 (2002-2005).

The list shows the vehicles recorded for this part number.

• Ford Explorer 3 U152 (2002-2005)

Check whether the number on the removed unit matches the information on this page. That way you know it is the matching unit; the comparison says nothing more. Whether the control unit itself is defective or a cable or plug is the cause only shows in the fault memory, which you should have read out beforehand.

How does the repair of the 1L2A-14B321-AM work?

At the start, the fault memory of the 1L2A-14B321-AM is read out and the log is enclosed. Then you disconnect the battery, remove the control unit, create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 examines the unit on the test bench, replaces defective components, deletes stored crash data and carries out a functional test.

The 3–4 working days refer only to this checking, repair and test. The unit is then returned to you. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 1L2A-14B321-AM get to Airbag24?

Either you send the 1L2A-14B321-AM as a parcel, or you book a UPS collection for an extra charge. The return journey after the repair is also handled by Airbag24 via UPS.

Enclose the printed repair order with the parcel and pack the control unit securely.