Airbag control unit with part number C1BT-14B321-FG

What does the airbag control unit C1BT-14B321-FG do?

The airbag control unit C1BT-14B321-FG is the central control unit of the restraint system (SRS) for Ford. It evaluates signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered.

It monitors the system continuously and reports faults via the airbag warning light.

After an accident the unit stores crash data and locks itself. Repair is the only way to lift the lock.

Why does the control unit C1BT-14B321-FG fail?

The most common cause is stored crash data after an accident, even without an airbag being triggered. A standard diagnostic tool cannot delete it. Further causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data remains in the unit until Airbag24 removes it during the repair. A diagnostic tool alone is not sufficient for this.

Ageing electronic components and cold solder joints impair the function, and moisture and corrosion at the plug connections also disturb the connection.

Voltage spikes, for example from a weak battery or a jump start, can stress the electronics.

How can you tell that the C1BT-14B321-FG is defective?

A defect in the control unit C1BT-14B321-FG shows itself through an airbag warning light that lights up constantly or intermittently, fault messages in the instrument cluster, a diagnostic tool without a connection, and a fault memory that cannot be cleared.

The signs occur together or on their own. Each one is a reason to have the system checked. The warning light in the instrument cluster is the most important signal, because it shows the state of the entire restraint system.

As long as the defect persists, airbags and seatbelt pretensioners may fail to deploy in an emergency.

Which vehicles is the C1BT-14B321-FG fitted in?

The control unit C1BT-14B321-FG is fitted in these vehicles: Ford Fiesta 7 ’09 (2008-2017).

The suitable vehicles are shown in this overview:

• Ford Fiesta 7 ’09 (2008-2017)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the correct unit. Have the fault memory read out in advance, because only the log shows whether the control unit or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers C1BT-14B321-CF, H1BT-14B321-AH, H1BT-14B321-AJ.

How does the repair of the C1BT-14B321-FG work?

Processing at Airbag24 usually takes 3–4 working days. Airbag24 checks the control unit C1BT-14B321-FG on the test bench, repairs defective components, deletes the crash data and carries out a function test.

First have the fault memory read out and enclose the log. Then disconnect the battery and only afterwards remove the control unit.

Create a repair order online and pack the unit well before sending it in. You get your own unit back.

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 C1BT-14B321-FG get to Airbag24?

You send the control unit C1BT-14B321-FG in as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns it to you by UPS.

The printed repair order goes into the parcel, and the unit is packed shock-proof.