Airbag control unit with part number DN1T-14B321-ED

What does the airbag control unit DN1T-14B321-ED do?

For Ford, the airbag control unit DN1T-14B321-ED controls the restraint system (SRS). Based on the crash sensors it detects an impact and decides within a few milliseconds which airbags and seatbelt pretensioners to trigger. It also monitors the system continuously.

The electronics check the connections to sensors, igniters and the wiring harness. A detected fault is recorded in the fault memory and shown via the airbag warning light.

If the vehicle is involved in an accident, the control unit stores crash data and locks itself.

Why does the control unit DN1T-14B321-ED fail?

Most often the cause is crash data stored after an accident, even if no airbag was triggered; an ordinary diagnostic tool cannot erase it. In addition there are ageing electronic components, cold solder joints, moisture or corrosion at plugs, and voltage spikes from weak batteries or jump-starting.

That crash data cannot be removed with the diagnostic tool is not a coincidence but part of the safety design. Airbag24 removes it during the repair.

The other causes relate to the age of the components, moisture in the vehicle and the on-board voltage.

How can you tell that the DN1T-14B321-ED is defective?

Typical signs are an airbag warning light that stays on permanently or intermittently, fault messages, and a diagnostic tool without connection. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The signs in detail:

• Airbag warning light in the instrument cluster stays on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

The warning light shows the finding immediately. For that reason, act promptly and do not wait for the problem to resolve itself.

Which vehicles is the DN1T-14B321-ED fitted in?

The control unit DN1T-14B321-ED is fitted at Ford in these vehicles: Ford EcoSport 2 (2012-2015).

Here is the overview:

• Ford EcoSport 2 (2012-2015)

Two steps come before removal. You compare the part number on the label of the removed unit with this page; this only ensures that it is the correct control unit. You have the fault memory read out beforehand, because only this result reveals whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers DN1T-14B321-EC, GN15-14B321-AF, GN15-14B321-GJ, GN1Z-14B321-AE, GN1Z-14B321-AK.

How does the repair of the DN1T-14B321-ED work?

You first read out the fault memory and enclose the log with the unit. Then disconnect the battery, remove the control unit and create a repair order online. Afterwards you send the unit in well packed.

Airbag24 tests the unit on the test bench, replaces defective components and erases the stored crash data. A function test concludes the work, after which your own unit is returned to you.

Processing at Airbag24 usually takes 3–4 working days. 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 DN1T-14B321-ED get to Airbag24?

Either you pack the unit and send it in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns the control unit to you by UPS.

The printed repair order goes in the parcel. Pack the unit shockproof so that it arrives undamaged.