Airbag control unit with part number 9343687

What does the airbag control unit 9343687 do?

The airbag control unit 9343687 coordinates the restraint system (SRS) in the Rolls-Royce. It processes the signals from the crash sensors, selects within milliseconds in an accident which airbags and seatbelt pretensioners are to trigger, and monitors everything continuously. It reports faults via the airbag warning light.

The unit works in the background and checks wiring, sensors and the firing circuit. Whatever it finds, it stores in the fault memory, which a diagnostic tool can read.

After an accident it keeps the crash data and locks itself.

Why does the control unit 9343687 fail?

Stored crash data is the most common cause, even if no airbag was triggered in the accident. In addition, aged components, cold solder joints, moisture and voltage spikes are possible causes in the 9343687.

A standard diagnostic tool cannot erase the crash data. Airbag24 removes it during the repair.

The other causes only become apparent during the test on the test bench. Voltage spikes arise, for example, from a weak battery or a jump-start.

How can you tell that the 9343687 is defective?

A defect in the 9343687 shows up as an airbag warning light in the instrument cluster that lights up constantly or intermittently. Also possible are an error message, no connection between the diagnostic tool and the unit, or a fault memory that cannot be cleared.

• airbag warning light in the instrument cluster
• error message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• fault memory cannot be cleared

Airbags and seatbelt pretensioners may then not trigger in an actual accident.

Which vehicles is the 9343687 fitted in?

The 9343687 is fitted in these vehicles: Rolls-Royce Wraith Series I (2013-2023).

The list below shows the vehicles registered for this part number.

• Rolls-Royce Wraith Series I (2013-2023)

You can check whether the unit is the right one by reading the part number on the label of the removed control unit; it must match this page. That confirms only the unit, not the cause. So have the fault memory read out beforehand, because it shows whether the control unit itself or a plug or cable is affected.

How does the repair of the 9343687 work?

First you have the fault memory read out and attach the log. Then you disconnect the battery, and only after that remove the control unit. Then you create the repair order online and send the unit in, well packed.

Airbag24 checks the 9343687 on the test bench, replaces defective components, clears the stored crash data and runs a functional test. Your own unit is then returned to you. Processing at Airbag24 usually takes 3–4 working days.

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 9343687 get to Airbag24?

You send the 9343687 as a parcel to Airbag24, or you book a UPS collection for an extra charge. Airbag24 then returns the repaired unit by UPS.

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