Airbag control unit with part number 2T1T-14B321-AB

What does the airbag control unit 2T1T-14B321-AB do?

The airbag control unit 2T1T-14B321-AB is the central control unit of the restraint system (SRS) for Ford. It evaluates the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

The control unit also monitors the system continuously and shows faults via the airbag warning light in the instrument cluster. The housing also bears the manufacturer number Bosch 0285001417.

After an accident it stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 2T1T-14B321-AB fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; these cannot be removed with a normal diagnostic tool. Other causes include ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data remains in the unit until the repair erases it. This makes it the most frequent cause, while the other causes apply in general.

Ageing electronic components and cold solder joints may not be visible from outside. Moisture, corrosion and voltage spikes, on the other hand, attack plug connections and electronics.

How can you tell that the 2T1T-14B321-AB is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently, and an error message also appears in the instrument cluster. The diagnostic tool receives no connection to the control unit, and the fault memory cannot be cleared. In that case, airbags and seatbelt pretensioners may not deploy in an emergency.

• Airbag warning light in the instrument cluster lights up constantly or intermittently
• Error message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory cannot be cleared

One of these signs is enough to have the fault memory read out.

Which vehicles is the 2T1T-14B321-AB fitted in?

The control unit 2T1T-14B321-AB is fitted in these vehicles: Ford Tourneo Connect 1 ’02 (2002-2006) and 1 ’02 Facelift (2006-2013); Ford Transit Connect 1 ’02 (2002-2006) and 1 ’02 Facelift (2006-2013).

The following overview lists the vehicles that are assigned to this part number.

• Ford Tourneo Connect 1 ’02 (2002-2006)
• Ford Tourneo Connect 1 ’02 Facelift (2006-2013)
• Ford Transit Connect 1 ’02 (2002-2006)
• Ford Transit Connect 1 ’02 Facelift (2006-2013)

Compare the part number on the label of the removed unit with this page. That shows whether it is the right unit. Whether the control unit is faulty or a plug or a cable is the cause is shown only by the fault memory readout. Please have it read out before removal.

For the same vehicles, we also repair control units with the part numbers 2T1T-14B321-AC, 9T1T-14B321-AC, 9T1T-14B321-AD, 9T1T-14B321-AE, 9T1T-14B321-AF, 9T1T-14B321-BC.

How does the repair of the 2T1T-14B321-AB work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit. Afterwards, create a repair order online and send in the well-packed unit. Airbag24 checks it on the test bench, replaces defective components, erases stored crash data and carries out a function test; processing usually takes 3–4 working days.

The sequence protects you during removal, because the log records the state of the system before any work is done on the unit.

Afterwards, your own repaired control unit is returned 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 2T1T-14B321-AB get to Airbag24?

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

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