Airbag control unit with part number KK3T-14B321-CA

What does the airbag control unit KK3T-14B321-CA do?

The airbag control unit KK3T-14B321-CA of Ford forms the central switching point of the restraint system. It processes the signals from the crash sensors, decides in an accident within a fraction of a second which airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

If the unit detects a fault, the airbag warning light comes on. After an accident it creates crash data and locks itself.

Monitoring runs in the background as soon as the vehicle is under voltage.

Why does the control unit KK3T-14B321-CA fail?

Most often the cause is crash data stored after an accident, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes such as with a weak battery or after jump-starting are also possible.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair of control unit KK3T-14B321-CA.

Aged components and cold solder joints degrade the signal transmission over time, while moisture and corrosion at the plug connections can cause contact problems. Voltage spikes additionally stress the electronics.

How can you tell that the KK3T-14B321-CA is defective?

A defect on control unit KK3T-14B321-CA shows itself when the airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears, the diagnostic tool cannot establish a connection, or the fault memory cannot be cleared.

The airbag warning light in the instrument cluster is the sign you should watch for first. In an emergency, airbags and seatbelt pretensioners may not be able to trigger with such a finding.

Which vehicles is the KK3T-14B321-CA fitted in?

The control unit KK3T-14B321-CA is fitted in these vehicles: Ford Transit 7 ’14 (from 2014).

The overview below shows the vehicles that Airbag24 has on record for this part number.

• Ford Transit 7 ’14 (from 2014)

On the one hand, compare the part number on the label of the removed unit with this page; that only confirms that it is the right unit. On the other hand, have the fault memory read out beforehand, because 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 BK3T-14B321-AB, BK3T-14B321-AC, BK3T-14B321-AD, BK3T-14B321-BB, BK3T-14B321-BC, BK3T-14B321-BD.

How does the repair of the KK3T-14B321-CA work?

First read out the fault memory and attach the log, then disconnect the battery and remove the control unit. Then create a repair order online and send the unit in well packed. Airbag24 usually needs 3–4 working days for testing, repair and function test.

At Airbag24, control unit KK3T-14B321-CA is tested on the test bench, defective components are replaced, stored crash data is erased and a function test is carried out.

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 KK3T-14B321-CA get to Airbag24?

You send control unit KK3T-14B321-CA in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order into the parcel, and pack the unit shock-proof.