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

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

The airbag control unit GN15-14B321-CA is the central control unit of the restraint system (SRS) of Ford. It evaluates the signals from the crash sensors, decides in an accident within fractions of a second which airbags and seatbelt pretensioners trigger, and monitors the system continuously.

If a fault occurs in the system, the unit reports it via the airbag warning light in the instrument cluster. After an accident it stores crash data and locks itself. Only the repair lifts this lock.

In an emergency the electronics must work without delay. The system therefore checks its own components continuously while the vehicle is powered.

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

The most common cause is crash data stored in the GN15-14B321-CA after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is created in the control unit itself. The fact that no airbag fired therefore does not mean that nothing was stored in the unit.

The other causes can lie in the electronics. Older components lose reliability, cold solder joints can lose contact, and moisture with corrosion weakens the plug connections. Voltage spikes, for example from a jump start or a weak battery, also strain the electronics.

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

A defect on the GN15-14B321-CA shows itself through the airbag warning light in the instrument cluster, which lights permanently or at times; through a fault message in the instrument cluster; through a missing connection to the diagnostic tool; and through a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The warning light is the most important indication. It reports the fault directly in your field of view and shows that the system has detected a fault.

A connection the diagnostic tool cannot establish points to a fault, just as a fault memory that persists after reading out does.

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

Decisive for the assignment is the part number on the label of the unit. The control unit GN15-14B321-CA is fitted in these vehicles: Ford EcoSport 2 (2012-2015) and 2 Facelift (2015-2022).

The vehicles at a glance:

• Ford EcoSport 2 (2012-2015)
• Ford EcoSport 2 Facelift (2015-2022)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. Have the fault memory read out before removal, because only this result 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 CN15-14B321-AC, CN15-14B321-AD, CN15-14B321-AE, CN15-14B321-AF, CN15-14B321-BC, CN15-14B321-BD.

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

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit GN15-14B321-CA. Next create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components and erases the stored crash data. A function test follows, and then 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-CA get to Airbag24?

You send the control unit GN15-14B321-CA as a parcel, or arrange a UPS collection for an extra charge. After repair Airbag24 sends it back by UPS.

Place the printed repair order in the parcel and pack the unit shock-proof before it goes on its way.