Airbag control unit with part number 38910-76K30

What does the airbag control unit 38910-76K30 do?

The airbag control unit 38910-76K30 is the central control unit of the SRS restraint system for Suzuki. It reads the signals from the crash sensors, decides within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the entire system. After an accident it stores crash data and locks itself.

If the control unit detects a fault, it outputs it via the airbag warning light in the instrument cluster. This is how you learn directly that a malfunction is present.

The crash data record what the unit registered during the accident. They remain in the control unit itself.

Why does the control unit 38910-76K30 fail?

The most common cause for control unit 38910-76K30 is a storage of crash data from an accident, even if no airbag has deployed. Further causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes from the vehicle electrical system.

With a normal diagnostic tool, crash data stay unchanged in the memory; Airbag24 erases them during the repair.

Voltage spikes occur, for example, with a weak battery or after jump-starting. Moisture and corrosion act on the plug connections and can disrupt contact there, while aged components and cold solder joints only show up in the fault memory.

How can you tell that the 38910-76K30 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently in the event of a defect in the 38910-76K30. In addition there is a fault message in the instrument cluster, a diagnostic tool that cannot establish a connection to the control unit, and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then not be able to deploy. The warning light shows the defect, so it should be checked promptly.

Which vehicles is the 38910-76K30 fitted in?

A look at the vehicle registration document is enough to match your model with the list. The airbag control unit 38910-76K30 is fitted in these vehicles: Suzuki Grand Vitara JT.

The following overview lists the vehicles that we know of.

• Suzuki Grand Vitara JT

Use the part number on the label of the removed unit to check whether you have the right control unit, and nothing more. Have the fault memory read out before the unit is removed; only this result reveals whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 38910-65J30, 3891065J50, 65J5712911, W2T71973.

How does the repair of the 38910-76K30 work?

You start by having the fault memory read out and enclose the log, then disconnect the battery. Only after that do you remove control unit 38910-76K30. Then you create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench and repairs defective components. Stored crash data is erased, then a function test follows. Afterwards your own unit is returned 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 38910-76K30 get to Airbag24?

You send in control unit 38910-76K30 as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends your own unit back by UPS.

Put the printed repair order into the parcel and pack the unit so that it is shockproof.