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

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

Within the restraint system (SRS) of Land Rover, the airbag control unit JPLA-14D374-AC takes over the control. From the signals of the sensors, it determines within milliseconds which airbags and seatbelt pretensioners trigger in a crash, and monitors the system constantly.

The control unit shows faults in the system via the airbag warning light in the instrument cluster. The evaluation is based on the measured values it constantly receives from the sensors.

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

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

On the JPLA-14D374-AC, the most common cause is stored crash data from an accident, even if no airbag was triggered. Other causes are aged electronics, cold solder joints, moisture and corrosion at plugs, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it in the course of the repair.

The other causes lie in the electronics and their surroundings. Over the years, components lose quality, and moisture can trigger corrosion at plug connectors. Voltage spikes, for example from a weak battery or a jump start, additionally stress the electronics.

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

If the airbag warning light in the instrument cluster stays on permanently or intermittently, the JPLA-14D374-AC may have a defect. A fault message in the instrument cluster and a missing connection to the diagnostic tool are added to this. Then airbags and seatbelt pretensioners may not trigger in an emergency.

The airbag warning light reports the fault regardless of whether the vehicle is standing or moving. If it stays on, take the system in for testing.

A fault memory that cannot be cleared is a further sign. The fact that the display goes out again does not mean the entry has disappeared.

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

The airbag control unit JPLA-14D374-AC is fitted in these vehicles: Land Rover Range Rover L405 (2013-2017) and L405 Facelift (2018-2021). The details concern Land Rover.

These models are recorded in detail:

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

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. Nothing more is established by this comparison. Have the fault memory read out beforehand, because only this log shows 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 DK6214D374AF, GK62-14D374-AA, JPLA-14D374-AE, JPLA-14D374-AF, JPLA14D374AD, LR071268.

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

For the JPLA-14D374-AC, first have the fault memory read out and attach the log. Then disconnect the battery, and only after that remove the control unit. The processing at Airbag24 usually takes 3–4 working days.

Next, create a repair order online and send the unit in well packed. At Airbag24, the unit is checked on the test bench, defective components are replaced and stored crash data is erased. A function test follows before your own unit is returned.

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-AC get to Airbag24?

You send the control unit JPLA-14D374-AC as a parcel, or you have it collected by UPS for an extra charge. After the repair, Airbag24 returns it to you by UPS.

The printed repair order goes into the parcel, and the packaging must be shock-resistant.