Airbag control unit with part number DT1T-14B321-KG

What does the airbag control unit DT1T-14B321-KG do?

The airbag control unit DT1T-14B321-KG is the central control unit of the SRS at Ford. It evaluates signals from the crash sensors, determines whether airbags and seatbelt pretensioners are triggered in a collision, and monitors the entire system. It indicates faults via the airbag warning light.

The evaluation takes only a moment, because in an accident there is no time to spare.

After an accident, the unit writes crash data to its memory and then locks itself.

Why does the control unit DT1T-14B321-KG fail?

The most common cause is crash data stored after an accident, which remains present even if no airbag was triggered. A normal diagnostic tool cannot erase it. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is stored in the unit and stays there. Reading it out shows the data, but a diagnostic tool cannot remove it.

Electronic components age, and solder joints can go cold over time. Moisture and corrosion attack the contacts.

Voltage spikes occur, for example, with a weak battery or when jump-starting, and place a load on the circuits.

How can you tell that the DT1T-14B321-KG is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition, a fault message appears in the instrument cluster, the diagnostic tool has no connection to the control unit, and the fault memory cannot be cleared.

A defect in the control unit may show in one of these signs or in several. In an emergency, airbags and seatbelt pretensioners may possibly fail to trigger.

The light is a clear signal that you should have checked promptly.

Which vehicles is the DT1T-14B321-KG fitted in?

The control unit DT1T-14B321-KG is fitted in these vehicles: Ford Transit Custom 1 (2012-2018) and 1 Facelift (2018-2023). The assignment depends on the part number of this unit.

In detail, these vehicles are affected:

• Ford Transit Custom 1 (2012-2018)
• Ford Transit Custom 1 Facelift (2018-2023)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the correct unit in front of you. Also have the fault memory read out before removal, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1C1A-14B321-BB, BK2T-14B321-AE, BK2T-14B321-AG, DT1T-14B321-KE, GL2T-14B321-AC.

How does the repair of the DT1T-14B321-KG work?

Checking, repairing and testing at Airbag24 usually take 3–4 working days. Beforehand, have the fault memory read out, enclose the report and disconnect the battery. Only then remove the control unit.

Afterwards, create a repair order online and pack the unit well for shipping. Airbag24 checks it on the test bench, replaces faulty components, erases crash data and carries out a function test. Your own 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 DT1T-14B321-KG get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. The return to you after the repair is made by UPS.

The printed repair order goes into the parcel; pack the unit shock-proof on the outside.