Airbag control unit with part number MN141449

What does the airbag control unit MN141449 do?

The airbag control unit MN141449 coordinates the restraint system (SRS) of Mitsubishi. It reads the crash sensors, determines in an accident within milliseconds which airbags and seatbelt pretensioners are to be triggered, and checks the system continuously. If it detects a fault, the airbag warning light comes on. After an accident the unit stores crash data and locks itself.

The evaluation takes place in the vehicle itself, without you having to trigger anything. The unit works in the background as soon as the vehicle is in operation.

For the occupants, what counts is that the decision is made quickly and reliably in an emergency. The electronics are designed precisely for this, and the system shows deviations via the instrument cluster.

Why does the control unit MN141449 fail?

The most common cause on the control unit MN141449 is stored crash data after an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Further causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

The unit stores the crash data after the accident. During the repair at Airbag24, stored crash data is deleted.

The other causes develop over a longer period. Electronics age, solder joints can go cold, and moisture or corrosion worsens the contact at plug connections.

Brief voltage spikes form the third group. A weak battery or a jump start can change the on-board voltage in such a way that the unit reacts to it.

How can you tell that the MN141449 is defective?

A defect on the MN141449 shows when the airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears, the diagnostic tool makes no contact with the control unit, or the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The warning light can be the first sign you notice, and it gives a clear indication. An error message in the instrument cluster supplements it. If the connection of a diagnostic tool fails or the fault memory cannot be emptied, this also points to a problem in the control unit or its wiring.

In this case have the system checked promptly.

Which vehicles is the MN141449 fitted in?

The control unit MN141449 is fitted in these vehicles: Mitsubishi Outlander CU (2001-2006).

The following list names the vehicles that Airbag24 assigns to this part number.

• Mitsubishi Outlander CU (2001-2006)

Proceed in two steps. Compare the part number on the label of the removed unit with this page; this only confirms that it is the right unit. In addition, have the fault memory read out, because only that 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 MR587732, MR587868, W2T61972.

How does the repair of the MN141449 work?

Have the fault memory of the MN141449 read out first and enclose the log. Then disconnect the battery, only afterwards remove the control unit and create a repair order online. Processing at Airbag24 takes 3–4 working days as a rule.

The sequence is mandatory for safety reasons. Keep to it, because the control unit may only be removed after the battery has been disconnected.

Airbag24 tests the unit on the test bench and replaces defective components. Stored crash data is deleted, followed by a function test. You receive the unit back afterwards. The processing time refers solely to the work at Airbag24.

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 MN141449 get to Airbag24?

You send the control unit MN141449 as a parcel, or book a UPS collection for an extra charge. After the repair Airbag24 returns it by UPS.

Put the printed repair order into the parcel, and pack the unit so that it withstands knocks.