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

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

The airbag control unit ET76-14B321-BG is the control centre of the restraint system (SRS) for Ford. It reads the signals from the crash sensors, decides in the event of an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The unit registers faults in the system itself and reports them via the airbag warning light. This keeps the state of the system in view without you having to trigger anything.

After an accident, the unit stores crash data and locks itself. The repair lifts the lock.

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

The most common cause for ET76-14B321-BG is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Further triggers are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data remain stored, and Airbag24 erases them during the repair. That is an essential point, because the fault cannot be fixed with a diagnostic tool alone.

Aged components, cold solder joints and corrosion at plug connections affect the electronics and their connections. Voltage spikes, for example from a weak battery or jump-starting, can add further strain to these components.

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

A defect on the ET76-14B321-BG shows itself, among other things, through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Also present may be an error message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

These signs mean that the system has detected a fault that needs to be checked. In an emergency, airbags and seatbelt pretensioners may fail to deploy.

If the light is on, it is important to have the fault memory read out promptly.

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

The vehicles in which the control unit is fitted can be compared with your car. The airbag control unit ET76-14B321-BG 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 vehicle list helps with comparing against your registration, and it is worth checking before you send anything in. The vehicles at a glance:

• 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; that alone ensures it is the right unit. Also have the fault memory read out in advance, because only the log shows 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 ET76-14B321-CF.

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

First have the fault memory read out for control unit ET76-14B321-BG and attach the log. Then disconnect the battery and only then remove the unit. 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 stored crash data and carries out a function test. Afterwards 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-BG get to Airbag24?

You send control unit ET76-14B321-BG to Airbag24 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit to you by UPS.

The printed repair order is included in the parcel, and the unit is packed shock-proof.