Airbag control unit with part number GEG1-57K30

What does the airbag control unit GEG1-57K30 do?

The airbag control unit GEG1-57K30 coordinates the restraint system (SRS) of Mazda. It evaluates the signals from the crash sensors and decides in an emergency, within milliseconds, which airbags and seatbelt pretensioners trigger.

At the same time it continuously monitors the components of the system. If it detects a fault, the airbag warning light in the instrument cluster comes on.

After an accident the unit stores crash data and locks itself. There is nothing more to say on this point.

Why does the control unit GEG1-57K30 fail?

Most often the cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase this data.

Crash data is not always obvious. An accident without airbag deployment can still create it, which is why a check remains worthwhile.

Aged electronic components play a role, as do cold solder joints. Moisture and corrosion on plug connectors, as well as voltage spikes, for example from a weak battery or a jump start, can put additional strain on the unit.

How can you tell that the GEG1-57K30 is defective?

A defect shows when the airbag warning light in the instrument cluster stays on permanently or intermittently, and as a fault message in the instrument cluster. Even if the diagnostic tool cannot establish a connection to the control unit, or the fault memory cannot be cleared, a defect is likely.

• The airbag warning light stays on permanently or intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool cannot find the control unit.
• The fault memory cannot be cleared.

In these cases airbags and seatbelt pretensioners may not trigger in an emergency. Treat these signs as a warning.

Which vehicles is the GEG1-57K30 fitted in?

According to our current data, this assignment applies to Mazda. The control unit GEG1-57K30 is fitted in these vehicles: Mazda Mazda6 GH (2008-2010) and GH Facelift (2010-2012).

The list shows the vehicles that our data links to the part number.

• Mazda Mazda6 GH (2008-2010)
• Mazda Mazda6 GH Facelift (2010-2012)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the right unit. You should also have the fault memory read out, so that it is established whether the control unit is the cause or a plug or a cable is.

For the same vehicles, we also repair control units with the part numbers 5WK43763, GDK457K30, GMC857K30A, GS1D-57-K30A, GS1D-57-K30B, GS1D-57K30.

How does the repair of the GEG1-57K30 work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit. Next, create a repair order online and send the unit well packed.

At Airbag24 the team checks the unit on the test bench and repairs defective components. Stored crash data is erased, followed by a function test. 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 GEG1-57K30 get to Airbag24?

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

You print out the repair order and put it into the parcel, and you pack the control unit shockproof.