Airbag control unit with part number YWC001171

What does the airbag control unit YWC001171 do?

The airbag control unit YWC001171 is the control unit for the restraint system (SRS) at MG. It processes the crash sensor data and decides in an accident, within milliseconds, whether airbags and seatbelt pretensioners are triggered.

In normal operation the unit monitors the components of the system. It displays faults via the airbag warning light in the instrument cluster.

After an accident the unit stores crash data and locks itself.

Why does the control unit YWC001171 fail?

With the YWC001171, the most common cause after an accident is stored crash data, even when no airbag has fired. Other causes are ageing components, cold solder joints, moisture and corrosion, and voltage spikes.

A standard diagnostic tool cannot remove the crash data. At Airbag24 the deletion is part of the repair process.

• Ageing electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or after jump-starting

Whether one of these causes is responsible for the failure must be shown by the examination of the unit.

How can you tell that the YWC001171 is defective?

You can tell the YWC001171 is defective when the airbag warning light in the instrument cluster comes on, either permanently or intermittently. In addition, error messages, a failed connection to the diagnostic tool or a fault memory that cannot be cleared point to a problem.

In an emergency this means that airbags and seatbelt pretensioners may not deploy.

Findings like these are a reason to visit a workshop promptly.

Which vehicles is the YWC001171 fitted in?

Vehicles in which the YWC001171 is installed include: MG ZS RT (2001-2005).

Here is the list of vehicles stored on this page:

• MG ZS RT (2001-2005)

Comparing the part number on the label of the removed unit with this page confirms that the unit is the correct one. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether plugs and cables are affected.

For the same vehicles, we also repair control units with the part numbers YWC107010, YWJ000241.

How does the repair of the YWC001171 work?

Having the fault memory of the YWC001171 read out is the start; the log goes into the parcel. Then disconnect the battery, only afterwards remove the control unit, and create the repair order online. Pack and send the unit afterwards.

Airbag24 first examines the unit on the test bench and replaces defective components. Stored crash data is removed, followed by a functional test, and your own unit is then sent back.

Checking, repairing and testing at Airbag24 are scheduled for 3–4 working days as a rule. 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 YWC001171 get to Airbag24?

The YWC001171 comes to Airbag24 by parcel, or you book a UPS collection for an extra charge. UPS handles the return after the repair is complete.

Pack the control unit shock-proof, so the packaging protects it well.