Airbag control unit with part number 1C3A14B321BD

What does the airbag control unit 1C3A14B321BD do?

The airbag control unit 1C3A14B321BD controls the restraint system (SRS) of Ford. From the signals of the crash sensors it determines in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and it monitors the system continuously.

If the unit detects a fault, the airbag warning light in the instrument cluster lights up and an error message is stored. This lets you see problems before they matter in an emergency.

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

Why does the control unit 1C3A14B321BD fail?

The most common cause is that crash data has been stored after an accident, even if no airbag has fired. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be removed with a standard diagnostic tool. Only the repair at Airbag24 removes this data.

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or jump-starting

How can you tell that the 1C3A14B321BD is defective?

Signs of a defect are an airbag warning light that stays on permanently or intermittently, a message in the instrument cluster, a diagnostic tool without contact to the control unit, and a fault memory that cannot be cleared.

Such signs mean that the airbags and seatbelt pretensioners may not deploy in an emergency. It is therefore worth having the cause narrowed down promptly.

Which vehicles is the 1C3A14B321BD fitted in?

The control unit 1C3A14B321BD is fitted in these vehicles: Ford F-Series Super Duty 1 (1999-2007).

The list of vehicles follows directly below.

• Ford F-Series Super Duty 1 (1999-2007)

Comparing the part number on the label of the removed unit with this page shows that it is the right unit, nothing more. Having the fault memory read out beforehand is important, because only this log shows whether the control unit is defective or whether a connector or cable is the cause.

How does the repair of the 1C3A14B321BD work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. You create the repair order online before the well-packed unit is sent in. At Airbag24, testing, repair and checking usually take 3–4 working days.

Airbag24 examines the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. The unit then goes back to you.

The order of the first steps serves safety and is fixed.

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 1C3A14B321BD get to Airbag24?

Either you send the control unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair. The printed repair order is packed together with the unit, and the control unit must be packed shock-proof.

A sturdy carton with enough padding protects the unit against vibration.