Airbag control unit with part number LT1T-14B321-GA

What does the airbag control unit LT1T-14B321-GA do?

The airbag control unit LT1T-14B321-GA is the central control unit of the restraint system (SRS) for Ford. It evaluates the signals of the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it stores crash data and locks itself.

The control unit indicates faults in the system via the airbag warning light in the instrument cluster. To do so, it continuously checks the sensors, the seatbelt pretensioners and the firing circuits.

Why does the control unit LT1T-14B321-GA fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start, are also considered. Airbag24 erases the crash data on the LT1T-14B321-GA during the repair.

That an airbag has deployed is not necessary for the storage: the unit records the accident even then. The data stay in the unit until they are erased.

The remaining causes concern the electronics and their connections. Components age, solder joints can be cold, moisture attacks plug connections, and voltage spikes stress the power supply.

How can you tell that the LT1T-14B321-GA is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently if the LT1T-14B321-GA has a defect. In addition, a fault message appears in the instrument cluster, the diagnostic tool has no connection to the control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

Such signs call for a prompt check of the system. The warning light shows the finding even when the vehicle otherwise drives normally.

Which vehicles is the LT1T-14B321-GA fitted in?

The control unit LT1T-14B321-GA is fitted in these vehicles: Ford Transit Connect 2 ’13 Facelift (2018-2023) and 2 ’13 (2013-2018); Ford Tourneo Connect 2 ’13 (2013-2018) and 2 ’13 Facelift (2018-2023). The list names the models we record for this part number.

The following models belong to this number:

• Ford Transit Connect 2 ’13 Facelift (2018-2023)
• Ford Transit Connect 2 ’13 (2013-2018)
• Ford Tourneo Connect 2 ’13 (2013-2018)
• Ford Tourneo Connect 2 ’13 Facelift (2018-2023)

Compare the part number on the label of the removed unit with this page; this only ensures that it is the right unit. Also have the fault memory read out before removal, because only that shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers DT1T-14B321-AE, DT1T-14B321-AF, DT1T-14B321-AG, DT1T-14B321-DE, DT1T-14B321-DF, DT1T-14B321-DG.

How does the repair of the LT1T-14B321-GA work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the LT1T-14B321-GA. Create a 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, replaces 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 LT1T-14B321-GA get to Airbag24?

You send the control unit LT1T-14B321-GA as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

The printed repair order belongs in the parcel, and the unit must be packed shockproof.