Airbag control unit with part number JK2T-14B321-BH

What does the airbag control unit JK2T-14B321-BH do?

The airbag control unit JK2T-14B321-BH is the central control unit of the restraint system for Ford. It processes the crash sensor signals, decides within milliseconds in a crash on airbags and seatbelt pretensioners, and shows faults via the airbag warning light.

The unit monitors the system constantly and checks the triggering circuits for interruptions. After a crash it stores crash data and locks itself.

Why does the control unit JK2T-14B321-BH fail?

With the JK2T-14B321-BH, the most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool does not erase it. Aged electronic components, cold solder joints, moisture and corrosion, as well as voltage spikes, are also possible causes.

Crash data stays stored in the control unit until Airbag24 erases it during the repair.

The other causes concern the electronics and their connections. Ageing, wet plugs and voltage spikes from a weak battery or jump-starting can weaken the unit.

How can you tell that the JK2T-14B321-BH is defective?

On the JK2T-14B321-BH, the airbag warning light stays on permanently or intermittently, an error message appears, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

The airbag warning light is the most important sign and needs attention. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

A diagnostic tool without a connection is also a reason to have the control unit checked.

Which vehicles is the JK2T-14B321-BH fitted in?

The following assignment shows which vehicles the control unit is intended for. The airbag control unit JK2T-14B321-BH is fitted in these vehicles: Ford Transit 7 ’14 (from 2014).

The vehicles in detail:

• Ford Transit 7 ’14 (from 2014)

(a) Compare the part number on the label of the removed unit with this page, and you will know whether it is the correct unit. (b) Have the fault memory read out beforehand. Only this 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 JK2T-14B321-BH work?

First read out the fault memory of the JK2T-14B321-BH and attach the log, then disconnect the battery. Only after that remove the control unit. Then create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days.

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 JK2T-14B321-BH get to Airbag24?

You send the control unit JK2T-14B321-BH 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 shockproof.