Airbag control unit with part number ET76-14B321-BF

What does the airbag control unit ET76-14B321-BF do?

The airbag control unit ET76-14B321-BF controls the restraint system (SRS) of Ford. It reads the signals from the crash sensors, decides within milliseconds in an accident on the triggering of airbags and seatbelt pretensioners, and monitors the entire system. If it detects a fault, it shows it via the airbag warning light.

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

The control unit works together with the sensors and actuators in the vehicle. The evaluation runs in the background without you having to operate anything.

Why does the control unit ET76-14B321-BF fail?

The most common cause is stored crash data from an accident, even if no airbag has fired; a normal diagnostic tool cannot erase them. Ageing electronic components, cold solder joints, moisture and corrosion at plug connections and voltage spikes are also possible.

The crash data record that the unit has registered an accident. The memory cannot be emptied with an ordinary diagnostic tool.

The other causes concern the electronics themselves or their environment in the vehicle.

How can you tell that the ET76-14B321-BF is defective?

The airbag warning light in the instrument cluster indicates a fault when it lights up permanently or intermittently. A fault message in the instrument cluster, a missing connection of the diagnostic tool to the control unit or a fault memory that cannot be cleared also indicate a fault.

These signs appear in detail as follows:

• The airbag warning light stays on permanently or lights up intermittently.
• The instrument cluster shows a fault message.
• The diagnostic tool finds no connection to the control unit.
• The fault memory cannot be cleared.

While such signs persist, airbags and seatbelt pretensioners may not be able to deploy in an emergency.

Which vehicles is the ET76-14B321-BF fitted in?

The control unit ET76-14B321-BF is fitted in these vehicles: Ford Transit Courier 1 (2014-2018) and 1 Facelift (2018-2023); Ford Tourneo Courier 1 Facelift (2018-2023) and 1 (2014-2018).

The vehicles to which this part number is assigned are shown in the following list.

• Ford Transit Courier 1 (2014-2018)
• Ford Transit Courier 1 Facelift (2018-2023)
• Ford Tourneo Courier 1 Facelift (2018-2023)
• Ford Tourneo Courier 1 (2014-2018)

Compare the part number on the label of the removed unit with this page to make sure you have the right unit. Also 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 ET76-14B321-CF.

How does the repair of the ET76-14B321-BF work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit. Then create a repair order online and send the unit in well packed. Processing at Airbag24 generally takes 3–4 working days.

Airbag24 checks the control unit on the test bench and repairs defective components. Afterwards Airbag24 erases the stored crash data and carries out a function test before 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 ET76-14B321-BF get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns it to you by UPS.

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