Airbag control unit with part number MN141447

What does the airbag control unit MN141447 do?

The airbag control unit MN141447 is the central control unit of the restraint system (SRS) for Mitsubishi. It evaluates the crash sensors, decides in an emergency within milliseconds on the triggering of airbags and seatbelt pretensioners, and reports faults via the airbag warning light.

During operation, it continuously checks the system, meaning the sensors, output stages and wiring. Any deviations found are recorded in the fault memory.

After an accident, it stores crash data and locks itself. The lock ends with the repair.

Why does the control unit MN141447 fail?

The most common cause is crash data stored in the unit after an accident, even if no airbag was triggered. An ordinary diagnostic tool cannot reach it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery.

Crash data is memory content that cannot be seen from the outside. Its removal is therefore part of the repair.

Aged solder joints or damp plugs may only make themselves noticed under load. A weak battery or jump-starting can put additional strain on the electronics. Airbag24 checks these points on the test bench.

How can you tell that the MN141447 is defective?

A defect shows itself through the airbag warning light, which stays on permanently or only at times in the instrument cluster, through a fault message and through a disturbed diagnosis. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

Typical signs at a glance:

• the airbag warning light stays on constantly or irregularly
• a fault message for the airbag system appears in the instrument cluster
• the diagnostic tool does not get a connection to the control unit
• the fault memory cannot be cleared

A lit warning light is therefore a reason to have the system checked promptly.

In which vehicles is the MN141447 fitted?

The control unit MN141447 is fitted in these vehicles: Mitsubishi Lancer CS (2003-2007).

The vehicle list for this part number follows:

• Mitsubishi Lancer CS (2003-2007)

Compare the part number on the label of the removed unit with this page, and you will know that it is the right unit. Have the fault memory read out as well, because only the result shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers MN141446.

How does the repair of the MN141447 work?

First have the fault memory read out and enclose the report. Then disconnect the battery before the control unit is removed. Afterwards, create a repair order online and send the unit in well packed.

This sequence is mandatory for safety reasons. Airbag24 checks the unit on the test bench, repairs defective components, erases the crash data and carries out a function test.

Processing at Airbag24 usually takes 3–4 working days. Afterwards, your own unit goes back 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 MN141447 get to Airbag24?

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

The printed repair order goes into the parcel, and the unit is packed shock-proof.