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

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

The LT1T-14B321-HA decides, in an accident at Ford, within fractions of a second which airbags and seatbelt pretensioners are triggered. To do this it evaluates the readings from the crash sensors and continuously checks the other components of the restraint system.

The unit reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

In everyday use the unit goes unnoticed, because it works in the background.

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

Most often it is caused by crash data stored after an accident, even if no airbag was triggered; these data cannot be removed with an ordinary diagnostic tool. Further causes are aged electronics, cold solder joints, moisture and corrosion, and voltage spikes.

Electronics age, and where solder joints have stayed cold, intermittent faults can occur that are hard to pin down.

Moisture and corrosion on connectors disturb the contact. Voltage spikes arise, for example, from a weak battery or a jump start, and strain the electronics.

Airbag24 removes crash data as part of the repair. Which of the other causes is present is determined by the test on the test bench.

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

A defect on the LT1T-14B321-HA first shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently. In addition there are error messages, a missing connection of the diagnostic tool or a fault memory that cannot be erased.

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

With these signs, airbags and seatbelt pretensioners may not trigger in an emergency. That is why every one of these messages deserves attention.

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

The LT1T-14B321-HA is installed 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).

This overview shows the vehicles recorded for 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)

Before you remove the control unit, compare the part number on the label with this page. That only confirms it is the right unit. Also have the fault memory read out; only this log shows whether the control unit is defective or whether a plug or a 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-HA work?

First have the fault memory read out and attach the log. Then disconnect the battery; only then remove the control unit. Next create a repair order online and send the unit off well packed.

At Airbag24 the unit is examined, defective components are repaired and stored crash data is deleted. A function test follows, and then your own unit goes back to you.

Processing at Airbag24 usually takes 3–4 working days. This information refers solely to testing, repairing and checking.

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-HA get to Airbag24?

You send the LT1T-14B321-HA as a package or book a UPS collection for an extra charge. Airbag24 handles the return after the repair by UPS.

The printed repair order belongs in the package, and the control unit must be packed shock-resistant.