Airbag control unit with part number GJ6A-57-K30-D

What does the airbag control unit GJ6A-57-K30-D do?

The airbag control unit GJ6A-57-K30-D is the central unit of the SRS for Mazda. It monitors the crash sensors, works out within milliseconds in the event of an impact which airbags and seatbelt pretensioners to trigger, and reports faults to the airbag warning light. After an accident, it stores crash data and locks itself.

In everyday use none of this is noticeable, because the unit works unobtrusively in the background and checks the system continuously.

Why does the control unit GJ6A-57-K30-D fail?

With the GJ6A-57-K30-D, crash data stored after an accident is the most common cause, even if the airbag has not deployed. On this control unit, deleting the crash data is often not possible; if you wish, get in touch with Airbag24 before sending the unit in. Other causes are aged electronics, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

The crash data stays in the memory after the accident, even though no airbags deployed. Aged electronics and cold solder joints show up over time, while moisture and corrosion on plugs weaken the contacts. Voltage spikes, for example from a weak battery, also affect the electronics.

How can you tell that the GJ6A-57-K30-D is defective?

You can recognise a fault on the GJ6A-57-K30-D by the airbag warning light in the instrument cluster staying on permanently or intermittently. A fault message may also appear in the instrument cluster, the diagnostic tool may not find the control unit, or the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The warning light in the instrument cluster is the first sign the vehicle itself gives. Take it seriously and have the system checked, rather than waiting for an emergency.

Which vehicles is the GJ6A-57-K30-D fitted in?

The GJ6A-57-K30-D is fitted in these vehicles: Mazda Mazda6 GG (2002-2005) and GG Facelift (2005-2007).

The list below names the vehicles for this part number:

• Mazda Mazda6 GG (2002-2005)
• Mazda Mazda6 GG Facelift (2005-2007)

Check the part number on the label of the removed unit against this page; this only confirms that you have the right unit. Have the fault memory read out beforehand, because only this finding shows whether the control unit is faulty or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 3326245, 5WK43763, 5WK43764, GJ6A57K30A, GS3L-57-K30, GSYL57K30.

How does the repair of the GJ6A-57-K30-D work?

Before removal, have the fault memory of the GJ6A-57-K30-D read out and enclose the log, then disconnect the battery and remove the control unit. Create the repair order online, then pack the unit well and send it in. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components and carries out a function test. If you would like the crash data deleted, briefly agree this with Airbag24 before sending the unit in. Your own unit is then sent back to you.

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 GJ6A-57-K30-D get to Airbag24?

You send the control unit GJ6A-57-K30-D to Airbag24 as a parcel, or book a UPS collection for an extra charge. After the repair, it comes back by UPS. Pack the unit shockproof and enclose the printed repair order.

Sturdy packaging protects the unit on its way to Airbag24 and back again.