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

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

The airbag control unit ET76-14B321-DG forms the centre of the restraint system (SRS) in Ford. It processes the measurements from the crash sensors, selects the appropriate airbags and seatbelt pretensioners in an accident within milliseconds, and monitors the state of the system without a break. Faults are passed on via the airbag warning light. After an accident it stores crash data and locks itself.

The sensors record what happens during an impact and send the values to the control unit. There the decision is made in fractions of a second.

In normal operation the unit remains inconspicuous. As soon as it detects a fault in the system, it reports it via the instrument cluster.

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

The most common cause on the ET76-14B321-DG is stored crash data after an accident, even without a deployed airbag; a standard diagnostic tool cannot erase it. Ageing components, cold solder joints, moisture at plug connections and voltage spikes are also possible.

• Aged electronic components wear out and eventually fail.
• Cold solder joints in the unit lead to intermittent faults.
• Moisture and corrosion at plug connections disrupt the contact.
• Voltage spikes, for example from a weak battery or a jump start, strain the electronics.

During the repair at Airbag24, stored crash data is deleted.

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

A defect on the ET76-14B321-DG shows on the airbag warning light in the instrument cluster, which stays on permanently or intermittently. In addition there is an error message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The warning light indicates the defect and therefore cannot stay hidden. If it comes on, have the system checked promptly.

If the diagnostic tool remains silent, that is a further sign that the control unit itself or its connection is affected.

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

The control unit ET76-14B321-DG 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 overview lists the models that Airbag24 has recorded for this part number.

• 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)

Proceed as follows: compare the part number on the label of the removed unit with this page; this only confirms that it is the right unit. Also have the fault memory read out, because only that 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-DG work?

First have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit and create a repair order online. At Airbag24 the unit is then checked for 3–4 working days as a rule, defective components are replaced, crash data is deleted and the function is tested.

For you the process begins with the fault memory. Only once the log is available and the battery is disconnected does the removal take place, and the unit is sent in well packed.

At Airbag24 the unit is checked first. Repair and function test follow; the processing time applies only to this work.

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-DG get to Airbag24?

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

Put the printed repair order into the parcel and pack the control unit so that it withstands knocks.