Airbag control unit with part number 38910M68PB2

What does the airbag control unit 38910M68PB2 do?

The airbag control unit 38910M68PB2 is the central unit of the SRS restraint system of Suzuki. It evaluates signals from the crash sensors, decides within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. If it detects a fault, the airbag warning light appears.

Self-monitoring is part of the unit's task, because a restraint system is only reliable if it recognises its own faults. To do this, the unit checks the connected components at fixed intervals while the vehicle is being driven.

After an accident the control unit stores crash data and locks itself. The lock only ends with the repair.

Why does the control unit 38910M68PB2 fail?

Most often the cause is crash data stored after an accident, even if no airbag was triggered. A standard diagnostic tool cannot delete this data. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery or when jump-starting.

Stored crash data leaves an entry in the fault memory that keeps the unit in the fault state. This entry remains even when the vehicle has long been driving normally again and nothing unusual can be noticed.

The other causes tend to develop gradually. A plug contact with moisture or corrosion may at first cause problems only sporadically and later lead to a complete failure.

How can you tell that the 38910M68PB2 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears on the display, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

As long as any of these signs is present, airbags and seatbelt pretensioners may not deploy in an emergency. Treat the warning light as a warning and not as a minor matter, even if the vehicle seems to run normally in everyday use.

The warning light makes the defect visible from the start. There is no need to take anything apart for this, because the display in the instrument cluster already provides the information.

Which vehicles is the 38910M68PB2 fitted in?

The control unit 38910M68PB2 is fitted in these vehicles: Suzuki Baleno WB (2015-2022) and WB Facelift (from 2022).

The list of vehicles assigned to the unit reads:

• Suzuki Baleno WB (2015-2022)
• Suzuki Baleno WB Facelift (from 2022)

Compare the part number on the label of the removed unit with this page. This establishes that you have the right unit. In addition, have the fault memory read out before you remove the unit. Only this result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 38910M68PD1.

How does the repair of the 38910M68PB2 work?

First read out the fault memory and enclose the log. Then disconnect the battery and only then remove the control unit. Next create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

This order serves safety, because the system must be de-energised before removal. The steps are deliberately set in this sequence.

Airbag24 checks the unit on the test bench, repairs defective components, removes the stored crash data and carries out a function test. Only then is your own unit sent back. The 3–4 working days apply to this checking and repair alone.

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 38910M68PB2 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair.

Pack the unit shockproof and enclose the printed repair order.