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

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

The airbag control unit DT1T-14B321-HG performs the evaluation within the restraint system (SRS) of Ford. In a collision it determines within milliseconds which airbags and seatbelt pretensioners are triggered, and it monitors the system continuously.

Faults found are shown via the airbag warning light in the instrument cluster.

After an accident the unit stores crash data and then locks itself.

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

The most common cause is crash data stored after an accident, even if no airbag has fired. A normal diagnostic tool cannot erase it; Airbag24 removes it during the repair of control unit DT1T-14B321-HG. Aged electronics, cold solder joints, moisture and corrosion, as well as voltage spikes, are also possible causes.

An accident in which no airbag fired can still leave such data behind. It makes diagnosis harder, even if the components themselves appear unremarkable.

The other causes mainly concern the electronics and their connections:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

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

The airbag warning light in the instrument cluster stays on permanently or intermittently and indicates that something is wrong with control unit DT1T-14B321-HG. A fault message in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared may also occur; in an emergency, airbags and seatbelt pretensioners may then not deploy.

This light comes directly from the control unit and is therefore a signal to be taken seriously.

If the warning light is on, do not wait long; have the fault memory read out promptly.

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

Control unit DT1T-14B321-HG is fitted in this model: Ford Transit 7 ’14 (from 2014). The basis for the assignment is the information on this part number.

Below is the list of vehicles we have assigned to this part number.

• Ford Transit 7 ’14 (from 2014)

Compare the part number on the removed unit with this page; this only ensures that you have the right unit. The fault memory is decisive: it shows whether the control unit is defective or whether a connector or cable is the cause, so have it read out in advance.

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-HG work?

Have the fault memory read out first and attach the log. Then disconnect the battery and only then remove control unit DT1T-14B321-HG. Afterwards create the repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. Your own unit then 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-HG get to Airbag24?

You send control unit DT1T-14B321-HG as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

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