Airbag control unit with part number GK3T-14B321-AC

What does the airbag control unit GK3T-14B321-AC do?

The GK3T-14B321-AC is an airbag control unit for the restraint system (SRS) of Ford. It evaluates the data from the crash sensors, determines in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system permanently.

The unit reports a malfunction via the airbag warning light. This way you keep track of the state of the system.

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

Why does the control unit GK3T-14B321-AC fail?

The most common cause is stored crash data after an accident, even without an airbag having been triggered. Other causes are aged components, cold solder joints and moisture at the plugs, as well as voltage spikes.

Stored crash data cannot be removed with a normal diagnostic tool, and it does not disappear by itself.

Other causes include:

• 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 GK3T-14B321-AC is defective?

A defect shows up at the airbag warning light in the instrument cluster, which stays on permanently or intermittently, at a fault message, at a missing connection to the diagnostic tool and at a fault memory that cannot be cleared.

The airbag warning light in the instrument cluster is the most important indication. If it stays on, airbags and seatbelt pretensioners may not trigger in an emergency.

Whether a cable or the control unit itself is the cause only the diagnosis will show.

Which vehicles is the GK3T-14B321-AC fitted in?

The GK3T-14B321-AC is fitted in these vehicles: Ford Transit 7 ’14 (from 2014).

These models are stored:

• Ford Transit 7 ’14 (from 2014)

Compare the part number on the label of the removed unit with this page, then you know that you have the right unit. Have the fault memory read out beforehand. Only this result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers BK2T-14B321-BF, BK3T-14B321-AC, DT1T-14B321-DF, KT1T-14B321-KD, LK4Z-14B321-C, LK4Z-14B321-E.

How does the repair of the GK3T-14B321-AC work?

You have the fault memory read out and enclose the log before you disconnect the battery and remove the control unit. Afterwards you create a repair order online and send in the well-packed unit.

At Airbag24 the unit is checked, defective components are repaired, stored crash data is erased and a function test is carried out. The work at Airbag24 takes 3–4 working days as a rule.

Afterwards your 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 GK3T-14B321-AC get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends the repaired unit back by UPS.

Enclose the printed repair order in the parcel and pad the control unit sufficiently.