Airbag control unit with part number GV4T-14B321-AB

What does the airbag control unit GV4T-14B321-AB do?

The airbag control unit GV4T-14B321-AB forms the centre of the SRS system in vehicles from Ford. It processes the readings from the crash sensors, decides in an accident on the triggering of airbags and seatbelt pretensioners, and at the same time checks all connections. If something fails, it reports this via the airbag warning light.

The unit makes the decision on triggering within a few milliseconds. For this reason, it works constantly and checks inputs and outputs at fixed intervals.

After an accident, it creates crash data and locks itself. This lock ends only with the repair, not by simply resetting.

Why does the control unit GV4T-14B321-AB fail?

Most often, the cause is crash data from an earlier accident, even if no airbag has deployed, because a normal diagnostic tool cannot erase it. Other causes are ageing components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example with a weak battery or jump-starting.

The crash data stems from an event that may have seemed harmless from the outside. The unit stores it nonetheless.

The other causes usually act slowly in everyday use. Electronic components age, solder joints can go cold, and moisture and corrosion in plug connectors interfere with the contact.

Voltage spikes occur, for example, when the battery is weak or jump-starting is done improperly. Such stresses act on the electronics without showing an effect immediately.

How can you tell that the GV4T-14B321-AB is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears, the diagnostic tool cannot reach the control unit, and a fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

When the warning light comes on, it is a direct warning from the system. It indicates a fault in the restraint system.

Whether the control unit or a cable is the cause is clarified only by reading out the fault memory.

Which vehicles is the GV4T-14B321-AB fitted in?

The control unit GV4T-14B321-AB is fitted in these vehicles: Ford Kuga 2 ’13 (2012-2016) and 2 ’13 Facelift (2016-2019).

The list of vehicles known for this part number follows below.

• Ford Kuga 2 ’13 (2012-2016)
• Ford Kuga 2 ’13 Facelift (2016-2019)

First check whether the label on the removed unit bears the same part number as this page; that only identifies the right unit. Also have the fault memory read out before removal. 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 285012044, 6E5T15607CA, 8M5T14B342AC, 9V4T-14B321-AB, CJ5T14B321AG, CV4T 14B321 CG.

How does the repair of the GV4T-14B321-AB work?

Processing at Airbag24 usually takes 3–4 working days, covering checking, repairing and testing. Before that, have the fault memory read out and enclose the log; then disconnect the battery and only then remove the control unit GV4T-14B321-AB. Then create the repair order online and send in the well-packed unit.

The crash data is erased by Airbag24 during the repair, followed by the function test. Afterwards, your own unit goes back to you.

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 GV4T-14B321-AB get to Airbag24?

Either send the unit as a parcel, or book a UPS collection for an extra charge. After the repair, UPS brings the control unit back to you.

The printed repair order goes into the parcel, and the unit is packed shockproof.