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

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

The airbag control unit DT1T-14B321-DG takes over the control of the restraint system for Ford. It checks the signals of the crash sensors and selects, within milliseconds in an accident, the airbags and seatbelt pretensioners to be triggered. It also registers faults in the system and reports them via the airbag warning light.

In normal operation the unit hardly stands out, as long as no fault is present.

After an accident it stores crash data and locks itself.

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

For the DT1T-14B321-DG, stored crash data from an earlier accident is the most common cause, even if no airbag has deployed. A normal diagnostic tool does not delete it. Further causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data remains in memory until Airbag24 deletes it as part of the repair.

Aged electronic components and cold solder joints can cause faults that become noticeable over time.

Moisture and corrosion at the plug connections disturb signal transmission. Voltage spikes, for example from a weak battery or a jump-start, put additional strain on the electronics.

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

A defect in the DT1T-14B321-DG shows up through the airbag warning light, which lights up permanently or intermittently. Also an error message in the instrument cluster, a missing connection to the diagnostic tool or a fault memory that cannot be cleared.

These signs point to a fault in the restraint system, even if the vehicle can still be driven normally.

In an emergency, airbags and seatbelt pretensioners may not trigger. Therefore have the warning checked promptly.

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

The part number DT1T-14B321-DG is decisive, and not only the model name. The control unit DT1T-14B321-DG is fitted in these vehicles: Ford Transit 7 ’14 (from 2014).

Here is the assignment to this part number:

• Ford Transit 7 ’14 (from 2014)

Compare the part number on the label of the removed unit with this page. Have the fault memory read out beforehand, 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 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-DG work?

For the DT1T-14B321-DG, first have the fault memory read out, attach the log and then disconnect the battery. Only then remove the control unit, create the repair order online and send it in well packed. At Airbag24, checking, repairing and testing usually take 3–4 working days.

The order of these steps protects during work on the restraint system and must be followed without exception.

At the Airbag24 test bench the unit is checked, defective components are repaired and the crash data is deleted. Then the function test follows, and your own unit goes back 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-DG get to Airbag24?

Your control unit DT1T-14B321-DG reaches us either as a parcel or through a UPS collection booked for an extra charge. After the repair, the unit comes back to you by UPS.

Place the printed repair order in the parcel and pack the control unit shock-proof.