Airbag control unit with part number JPLA-14D374-AF

What does the airbag control unit JPLA-14D374-AF do?

The control unit JPLA-14D374-AF is responsible, as the airbag control unit, for controlling the restraint system (SRS) in Land Rover. It checks the sensor signals continuously, decides in a crash within milliseconds whether airbags and seatbelt pretensioners are triggered, and reports faults to the airbag warning light.

After an accident, the unit stores crash data and locks itself.

Monitoring runs in the background, without anything needing to be operated for it.

Why does the control unit JPLA-14D374-AF fail?

With the JPLA-14D374-AF, the most common cause is crash data that has remained in the memory after an accident, even though no airbag was triggered. Ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also possible causes.

A normal diagnostic tool cannot erase this crash data. For that reason it remains stored in the control unit.

The other causes act over a longer period. Ageing, cold solder joints and corrosion are hard to detect from outside.

Voltage spikes, on the other hand, intervene in the electronics at short notice, for example with a weak battery or a jump start.

How can you tell that the JPLA-14D374-AF is defective?

A defect in the JPLA-14D374-AF shows up as a warning light in the vehicle, as fault messages and as disturbances during diagnosis. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

Watch for the following signs:

• Airbag warning light in the instrument cluster, on permanently or intermittently
• Fault message in the instrument cluster
• No connection between diagnostic tool and control unit
• Fault memory cannot be cleared

The warning light is the direct indication of a fault in the system.

Which vehicles is the JPLA-14D374-AF fitted in?

The part number JPLA-14D374-AF is recorded for the following models. The control unit is fitted in these vehicles: Land Rover Range Rover L405 (2013-2017) and L405 Facelift (2018-2021); Land Rover Range Rover Sport L494 (2013-2017) and L494 Facelift (2018-2022).

These vehicles are recorded for this part number:

• Land Rover Range Rover L405 (2013-2017)
• Land Rover Range Rover L405 Facelift (2018-2021)
• Land Rover Range Rover Sport L494 (2013-2017)
• Land Rover Range Rover Sport L494 Facelift (2018-2022)

Compare the part number on the label of the removed unit with this page, so that you can be sure you have the right unit. Whether the control unit is defective, however, is shown only by the fault memory read out. A plug or a cable can equally be the cause, so have the fault memory read out first.

For the same vehicles, we also repair control units with the part numbers DK6214D374AF, GK62-14D374-AA, JPLA-14D374-AE, JPLA14D374AD, LR071268.

How does the repair of the JPLA-14D374-AF work?

For the JPLA-14D374-AF, first have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit and create the repair order online. Finally, send in the well-packed unit.

At Airbag24, the unit is checked on the test bench, defects in the affected components are repaired, the crash data is erased and a function test is carried out. Afterwards your own unit is returned to you.

At Airbag24, processing 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 JPLA-14D374-AF get to Airbag24?

You send the control unit JPLA-14D374-AF as a parcel to Airbag24 or book a UPS collection for an extra charge. The return after the repair is likewise made by UPS.

Pack the unit shock-proof and include the printed repair order.