Airbag control unit with part number YS6T-14B056-AA

What does the airbag control unit YS6T-14B056-AA do?

The airbag control unit YS6T-14B056-AA coordinates the restraint system (SRS) of Ford. It checks the signals from the crash sensors and, in the event of an accident, triggers the appropriate airbags and seatbelt pretensioners within milliseconds. After an accident, it stores crash data and locks itself.

The housing also bears the manufacturer number Bosch 0285001394, which helps when comparing labels.

The system is under constant monitoring during operation. If the unit detects a fault, it reports it via the airbag warning light in the instrument cluster.

Why does the control unit YS6T-14B056-AA fail?

Stored crash data is the most common cause, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Other possible causes include aged components, dry solder joints, moisture and corrosion on plug connections, and voltage spikes.

Crash data from a previous accident remains in the unit and keeps the fault condition in place, even if the vehicle appears unremarkable. From outside, it is not possible to tell which cause applies.

Aged electronic components, dry solder joints, and moisture or corrosion on plug connections are among the causes, as are voltage spikes, for example from a weak battery or a jump start.

How can you tell that the YS6T-14B056-AA is defective?

You will recognise a defect mainly by the airbag warning light in the instrument cluster lighting up permanently or intermittently. A fault message, missing diagnostic communication and a fault memory that cannot be cleared also indicate a problem. In an emergency, the airbags and seatbelt pretensioners may then not deploy.

The individual signs:

• airbag warning light that lights up permanently or intermittently
• fault message in the instrument cluster
• diagnostic tool that cannot reach the control unit
• fault memory that cannot be cleared

Do not wait; have the finding checked promptly.

Which vehicles is the YS6T-14B056-AA fitted in?

Compare the models with your vehicle before removal. Control unit YS6T-14B056-AA is fitted for Ford in these vehicles: Ford Fiesta 5 ’99 (1999-2001).

The assignment to vehicles can be seen here:

• Ford Fiesta 5 ’99 (1999-2001)

Matching the part number on the label with this page only confirms that the unit is correct. Have the fault memory read out beforehand. Only this result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers YS4T14B056BA, YS6T-14B056-AC, YS6T-14B056-BC, YS6T-14B056-BD, YS6T14B056AD.

How does the repair of the YS6T-14B056-AA work?

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit. Finally, create the repair order online and pack the unit well.

At Airbag24 the unit is checked on the test bench, any necessary repairs to components are carried out, crash data is erased and finally a function test is run. Your own unit is then returned to you.

Processing at Airbag24 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 YS6T-14B056-AA get to Airbag24?

The unit goes to Airbag24 as a parcel, or you book a UPS collection. After the repair, UPS brings your own unit back to you.

Pack the printed repair order into the parcel and protect the control unit with shock-proof packaging.