Airbag control unit with part number J1GT-14B321-AE

What does the airbag control unit J1GT-14B321-AE do?

The airbag control unit J1GT-14B321-AE is the central control unit of the restraint system for Ford. Using the crash sensors it detects an accident and decides within milliseconds which airbags and seatbelt pretensioners are triggered.

During operation it monitors the system and reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

Why does the control unit J1GT-14B321-AE fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be deleted with a standard diagnostic tool. At Airbag24 it is removed as part of the repair, and the unit is then fully tested. The following causes come into consideration in detail:

• aged components in the electronics
• cold solder joints on the circuit board
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery

How can you tell that the J1GT-14B321-AE is defective?

A defect shows up at the airbag warning light in the instrument cluster, which lights up constantly or intermittently. In addition there is a fault message in the instrument cluster, no connection to the diagnostic tool, or a fault memory that cannot be cleared.

In the event of a crash, airbags and seatbelt pretensioners may possibly not deploy with such a finding. That is a clear reason not to ignore the light and to have the unit checked.

Which vehicles is the J1GT-14B321-AE fitted in?

The J1GT-14B321-AE is fitted in these vehicles: Ford S-Max 2 (2015-2019) and 2 Facelift (2019-2023).

The vehicles for this part number are listed below.

• Ford S-Max 2 (2015-2019)
• Ford S-Max 2 Facelift (2019-2023)

(a) Compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. (b) Have the fault memory read out beforehand, because only this log shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 6M2T-14B056-AE, AM2T-14B321-AC, BM2T-14B321-AB, BM2T-14B321-AC, BM5T-14B321-CE, E1GT 14B321 BF.

How does the repair of the J1GT-14B321-AE work?

First read out the fault memory and enclose the log, then disconnect the battery and only afterwards remove the control unit. Then create a repair order online and send the unit in well packed. At Airbag24, checking, repairing and testing usually take 3–4 working days.

Airbag24 checks the control unit on the test bench, replaces defective components, deletes the stored crash data and carries out a function test. Afterwards your own unit goes back to the sender once the check is complete.

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 J1GT-14B321-AE get to Airbag24?

You can send the J1GT-14B321-AE as a parcel or book a UPS collection for an extra charge. Airbag24 returns the unit to you by UPS after the repair.

The printed repair order belongs in the parcel, and the packaging must be shock-proof.