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

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

In vehicles from Ford, the airbag control unit JK2T-14B321-BF controls the restraint system (SRS). It decides in a crash which airbags and seatbelt pretensioners deploy.

The crash sensors supply the data that the unit evaluates within milliseconds. During operation it monitors all components and shows faults via the airbag warning light.

After an accident it stores crash data and locks itself. The sensors alone do not trigger the airbags; this control unit is required for that.

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

The most common cause of failure with JK2T-14B321-BF is crash data stored after an accident, even if no airbag has deployed. These entries cannot be erased with a normal diagnostic tool. Further causes at a glance:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes from a weak battery or jump-starting

The cause in each individual case is determined by testing the unit. The list is therefore only a guide.

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

The airbag warning light in the instrument cluster lights up permanently or intermittently as soon as there is a fault in the JK2T-14B321-BF. An error message may also appear on the display.

In addition, there may be no connection between the diagnostic tool and the control unit, and the fault memory cannot be cleared. Each of these signs points to a defect, and none of them should be ignored.

As long as these signs persist, the airbags and seatbelt pretensioners may not deploy in an emergency.

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

The JK2T-14B321-BF is fitted in the following vehicles: Ford Transit 7 ’14 (from 2014).

The overview below shows the vehicles recorded with us for this part number.

• Ford Transit 7 ’14 (from 2014)

First compare the part number of the removed unit with this page. That only confirms whether it is the right unit. Then have the fault memory read out, as only this log shows whether the control unit is defective or whether a plug or cable is affected.

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-BF work?

Have the fault memory read out and enclose the log. Then disconnect the battery and only afterwards remove the control unit JK2T-14B321-BF. Create the repair order online and pack the unit well before sending it.

Airbag24 tests the unit on the test bench and replaces defective components. Stored crash data is erased, followed by a function test. Processing usually takes 3–4 working days.

The fixed order serves your safety. 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-BF get to Airbag24?

You send your control unit JK2T-14B321-BF as a parcel or book a UPS collection for an extra charge; after the repair, Airbag24 returns the unit to you by UPS.

The printed repair order goes in the parcel. Pack the unit shockproof.