Airbag control unit with part number GJ5Z-14B321-B

What does the airbag control unit GJ5Z-14B321-B do?

The airbag control unit GJ5Z-14B321-B is the central control unit of the restraint system (SRS) for Ford. It evaluates the signals from the crash sensors and decides within milliseconds in an accident which airbags and seatbelt pretensioners are triggered.

It also monitors the system throughout operation. If it detects a fault, it shows this via the airbag warning light in the instrument cluster.

After an accident the unit stores crash data and locks itself. This lock is only lifted by the repair.

Why does the control unit GJ5Z-14B321-B fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, as well as voltage spikes.

The unit creates the crash data itself as soon as it registers an accident. It remains in memory until the repair removes it.

The other causes include the following:

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

How can you tell that the GJ5Z-14B321-B is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears in the instrument cluster. In addition, the diagnostic tool cannot establish a connection with the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. You should therefore not ignore the warning.

If the light stays on permanently or keeps coming back, have the system checked promptly.

Which vehicles is the GJ5Z-14B321-B fitted in?

The control unit GJ5Z-14B321-B is fitted in these vehicles: Ford Escape 3 (2013-2019).

The following overview shows the models stored for this part number.

• Ford Escape 3 (2013-2019)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the right unit. Before that, also have the fault memory read out, because only this result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers CJ5T-14B321-AF, CJ5T-14B321-AH, CJ5T-14B321-AJ, CJ5Z-14B321-C, FJ5T-14B321-AA.

How does the repair of the GJ5Z-14B321-B work?

You have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Next you create a repair order online and send the well-packed unit. Airbag24 tests it on the test bench, repairs defective components, deletes the crash data and runs a function test before your own unit is returned. At Airbag24 processing 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 GJ5Z-14B321-B get to Airbag24?

You send the unit as a parcel or book UPS collection for an extra charge. After the repair Airbag24 returns it by UPS.

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