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

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

The airbag control unit J1GT-14B321-AC coordinates the restraint system in Ford. It checks the signals from the crash sensors, selects the correct airbags and seatbelt pretensioners in an accident and triggers them within fractions of a second.

It also monitors all components of the system. Detected faults are shown via the airbag warning light in the instrument cluster.

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

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

The most common cause is crash data from an accident, even if no airbag has deployed. Other causes are:

This data cannot be erased with a standard diagnostic tool, and Airbag24 removes it during the repair.

• ageing electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example when starting with a jump start

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

A defect in the J1GT-14B321-AC shows up as the airbag warning light, an error message in the instrument cluster, a diagnostic tool with no connection and a fault memory that cannot be cleared.

If the warning light stays on permanently or intermittently, you must assume that airbags and seatbelt pretensioners may not deploy in an emergency. Take this display seriously. The light going out is no proof that the fault has gone, because the cause may still be there.

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

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

The following list shows the models in which this unit is found.

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

On the one hand, you can compare the part number on the label of the removed unit with this page. This only confirms that it is the right unit. On the other hand, have the fault memory read out beforehand to establish whether the control unit or 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-AC work?

Airbag24 tests the control unit J1GT-14B321-AC on the test bench, repairs faulty components, erases stored crash data and carries out a function test. Processing usually takes 3–4 working days.

First, read out the fault memory and enclose the log. Then disconnect the battery, and only after that remove the unit and create a repair order online. Pack it well and send it in.

The 3–4 working days cover only testing, repairing and checking at Airbag24.

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-AC get to Airbag24?

You send the control unit J1GT-14B321-AC 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 so that it is shock-proof.