Airbag control unit with part number 38910-78R30

What does the airbag control unit 38910-78R30 do?

At Suzuki, the airbag control unit 38910-78R30 is the central control unit of the restraint system (SRS). It analyses the crash sensors, decides within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered, and displays faults via the airbag warning light.

The system is checked continuously during operation. The unit stores any faults it finds in the fault memory.

After an accident, it stores crash data and locks itself.

Why does the control unit 38910-78R30 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair, so the unit is checked without it afterwards.

Aged components and moisture act over a longer period, whereas voltage spikes, for example from jump-starting, occur suddenly.

How can you tell that the 38910-78R30 is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Typical signs are also error messages, a diagnostic tool without a connection and a fault memory that cannot be erased.

• Airbag warning light stays on permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be erased

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. For this reason, you should arrange an inspection promptly.

Which vehicles is the 38910-78R30 fitted in?

At Suzuki, the control unit 38910-78R30 is fitted in these vehicles: Suzuki Jimny JB64.

The models at a glance:

• Suzuki Jimny JB64

Two things belong before removal. Comparing the part number on the label with this page only confirms that it is the right unit. Have the fault memory read out, because only its contents show whether the control unit is defective or a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 38910-81A10.

How does the repair of the 38910-78R30 work?

At Airbag24, processing takes 3–4 working days as a rule. This period covers inspection, repair and function test.

Your steps are: read out the fault memory and enclose the log, then disconnect the battery, then remove the control unit, create the repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and performs the function test. The unit is then 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 38910-78R30 get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit shockproof.