Airbag control unit with part number GN15-14B321-CK

What does the airbag control unit GN15-14B321-CK do?

The airbag control unit GN15-14B321-CK controls the restraint system (SRS) of Ford. Based on the signals from the crash sensors, it decides within milliseconds in an impact which airbags and seatbelt pretensioners to trigger.

It also checks the system continuously and displays faults via the airbag warning light. If an accident is registered, it stores crash data and locks itself; only a repair lifts this lock.

Why does the control unit GN15-14B321-CK fail?

Stored crash data is the most common cause, even if no airbag has deployed. Other factors are ageing components, cold solder joints, moisture and corrosion at connectors, and voltage spikes.

Crash data cannot be removed with a normal diagnostic tool. Airbag24 removes it as part of the repair.

Besides this, the other causes wear on the unit over time. Components age, solder joints can develop weak contact, and moisture attacks the connectors.

Voltage spikes, for example from a weak battery or a jump start, are an additional load.

How can you tell that the GN15-14B321-CK is defective?

A defect becomes visible when the airbag warning light in the instrument cluster stays on permanently or intermittently. Fault messages, a diagnostic tool without connection to the control unit or a fault memory that cannot be cleared may accompany it. In an emergency, airbags and seatbelt pretensioners may then not deploy.

Typical individual symptoms are:

• Warning light that stays on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool cannot reach the control unit
• Fault memory remains even after an attempt to clear it

The warning light shows the state of the system at all times.

Which vehicles is the GN15-14B321-CK fitted in?

The details follow the assignment that Airbag24 holds for this control unit. The control unit GN15-14B321-CK is fitted in these vehicles: Ford EcoSport 2 Facelift (2015-2022).

The vehicles are listed below.

• Ford EcoSport 2 Facelift (2015-2022)

Comparing the label with this page only checks that you have the correct unit, and nothing more is established by it. Whether there is a defect in the control unit, or a connector or cable is the cause, is decided only by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers DN1T-14B321-EC, GN15-14B321-AF, GN15-14B321-GJ, GN1Z-14B321-AE, GN1Z-14B321-AK.

How does the repair of the GN15-14B321-CK work?

First read out the fault memory and enclose the readout log; then disconnect the battery and only then remove the control unit. Create the repair order online and send the unit in, well packed. Processing at Airbag24 includes testing, repair and checks, and usually takes 3–4 working days.

This sequence is mandatory for safety reasons; battery and removal must not be swapped.

At Airbag24, the unit is checked on the test bench, defective components are replaced and the crash data is deleted. Finally a function test follows, after which your own unit is returned.

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 GN15-14B321-CK get to Airbag24?

You send the unit as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 brings it back to you by UPS.

Place the printed repair order in the parcel, and pack the unit shockproof.