Airbag control unit with part number 38910-73SA0

What does the airbag control unit 38910-73SA0 do?

The airbag control unit 38910-73SA0 is the central control unit of the restraint system (SRS) for the Suzuki. It processes the signals from the crash sensors, determines in an accident which airbags and seatbelt pretensioners trigger, and monitors the system continuously. Faults are indicated via the airbag warning light.

The unit makes this decision in fractions of a second. The deciding factors are the strength and direction of the impact.

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

Why does the control unit 38910-73SA0 fail?

The most common cause is crash data stored after an accident, even if no airbag was deployed. A standard diagnostic tool cannot remove it. Other causes include ageing electronic components, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

Stored crash data remains in the unit until it is deleted during the repair. This explains why a fault can occur even after an accident that happened some time ago.

The other causes are not necessarily linked to an accident. Corroded contacts and cold solder joints disrupt the signal paths, and voltage spikes, for example from a weak battery, can trigger faults.

How can you tell that the 38910-73SA0 is defective?

Signs include an airbag warning light in the instrument cluster that stays on permanently or intermittently, a fault message in the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not deploy.

The warning light is the most important indication. If it does not go out after switching on the ignition, the finding should be checked.

Which vehicles is the 38910-73SA0 fitted in?

The airbag control unit 38910-73SA0 is fitted in these vehicles: Suzuki Ignis MF33S. You can check in advance whether your car is included. The part number alone does not decide that.

The following vehicles are among them:

• Suzuki Ignis MF33S

Compare the part number on the label of the removed unit with this page. That ensures you have the correct unit. Then have the fault memory read out, because only the log shows whether the control unit is defective or whether a plug or cable is causing the fault.

For the same vehicles, we also repair control units with the part numbers 38910-62RE0.

How does the repair of the 38910-73SA0 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the unit. Next, create the repair order online and send the well-packed unit. At Airbag24, testing, repair and functional test usually take 3–4 working days.

Airbag24 tests the unit on the test bench, repairs defective components, deletes the crash data and carries out a functional test. Afterwards your own unit goes 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 38910-73SA0 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

The printed repair order goes into the parcel, and the unit is packed shock-proof.