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

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

The airbag control unit DT1T-14B321-FF is the central control unit of the airbag system (SRS) for Ford. In a collision, it checks the signals from the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners are triggered.

It also continuously monitors the wiring and components of the system. It marks detected faults with the airbag warning light in the instrument cluster.

After an accident, the unit stores crash data and remains locked afterwards.

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

On the DT1T-14B321-FF, stored crash data is the most common cause, even if no airbag was triggered in the accident. It cannot be removed with an ordinary diagnostic tool.

Airbag24 erases the crash data during the repair. This step is an integral part of repairing the unit.

Other causes lie in ageing electronic components, cold solder joints, and moisture or corrosion at plug connections.

Voltage peaks, for example from a weak battery or jump-starting, can also affect the unit.

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

The airbag warning light in the instrument cluster lights up on the DT1T-14B321-FF permanently or intermittently. Typically, fault messages in the instrument cluster also appear, and the unit cannot be addressed by the diagnostic tool.

The light therefore reports the defect immediately. In the event of a defect, airbags and seatbelt pretensioners may not trigger in an emergency.

• airbag warning light permanently or intermittently on
• fault message in the instrument cluster
• no connection between diagnostic tool and control unit
• fault memory cannot be cleared

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

The DT1T-14B321-FF is fitted in these vehicles: Ford Transit 7 ’14 (from 2014). This list helps you quickly identify your vehicle.

Here are the vehicles to which the control unit is assigned:

• Ford Transit 7 ’14 (from 2014)

Firstly, compare the part number on the label of the removed unit with this page. This only confirms that you have the right unit. Secondly, have the fault memory read out beforehand, because only this finding 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 BK2T-14B321-BF, BK3T-14B321-AC, DT1T-14B321-DF, KT1T-14B321-KD, LK4Z-14B321-C, LK4Z-14B321-E.

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

First have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit DT1T-14B321-FF and create a repair order online, with which you send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and carries out a functional test. Afterwards you receive your own unit back.

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-FF get to Airbag24?

You send the control unit DT1T-14B321-FF as a parcel or book a UPS collection for an extra charge. Airbag24 sends the repaired unit back to you by UPS after completion.

Place the printed repair order in the parcel and pack the unit shockproof.