Airbag control unit with part number 38910-73SB0

What does the airbag control unit 38910-73SB0 do?

The airbag control unit 38910-73SB0 is the central control unit of the SRS restraint system of Suzuki. It evaluates the signals from the crash sensors, selects the airbags and seatbelt pretensioners within milliseconds in an accident, and checks the system continuously. After an accident it stores crash data and goes into a lock.

The evaluation follows fixed criteria. In a crash only an instant remains for it, which is why the unit decides independently.

The unit records faults in the restraint system and displays them via the airbag warning light.

Why does the control unit 38910-73SB0 fail?

The most common cause is crash data stored after an accident, even if no airbag has triggered, and a normal diagnostic tool does not erase it. In addition, aged electronics, cold solder joints, moisture and corrosion at plugs, and voltage spikes come into consideration as causes.

The crash data is held in the memory of the unit and remains invisible from outside.

The other causes concern components, contacts and the power supply. Solder joints deteriorate with age, moisture causes plug contacts to corrode, and voltage spikes arise, for example, from a weak battery or jump-starting.

How can you tell that the 38910-73SB0 is defective?

A defect in the 38910-73SB0 is indicated by the airbag warning light, which stays on permanently or intermittently. In addition there is an error message in the instrument cluster, no contact with the diagnostic tool and a fault memory that cannot be cleared.

The warning in the instrument cluster is the clearest sign. A fault that the unit has detected remains visible until it is rectified.

Without a connection to the diagnostic tool, the cause cannot be narrowed down. In this state, airbags and seatbelt pretensioners may not trigger in an emergency.

Which vehicles is the 38910-73SB0 fitted in?

The airbag control unit 38910-73SB0 is fitted in these vehicles: Suzuki Ignis MF33S.

The assigned models are:

• Suzuki Ignis MF33S

Comparing the part number on the label of the removed unit with this page only shows that it is the correct unit. Have the fault memory read out beforehand. Only this log shows whether the control unit is defective or whether a connector or cable is the cause.

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

How does the repair of the 38910-73SB0 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit 38910-73SB0. Afterwards, create a repair order online and pack the unit well before sending it in. Processing at Airbag24 usually takes 3–4 working days, and this period covers the work there alone.

At Airbag24 the unit is examined on the test bench, defective components are specifically replaced, and the stored crash data is erased. A function test follows.

The own unit then goes back.

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 38910-73SB0 get to Airbag24?

You send the control unit 38910-73SB0 to Airbag24 as a parcel; alternatively, you book a UPS collection for an extra charge. The return after the repair is made by UPS.

Put the printed repair order in the parcel and pack the unit shock-proof.