Airbag control unit with part number MR587757 DPSB

What does the airbag control unit MR587757 DPSB do?

The airbag control unit MR587757 DPSB acts as the central control unit of the restraint system (SRS) for Mitsubishi. It evaluates the signals from the crash sensors, decides within a fraction of a second in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. If it detects a fault, it indicates this via the airbag warning light.

During operation the unit continuously checks the connections to sensors, airbags and seatbelt pretensioners. It stores any irregularities in the fault memory so that a workshop can trace them in a targeted way.

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

Why does the control unit MR587757 DPSB fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; a normal diagnostic tool cannot erase it. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Crash data remains in the unit's memory until it is deliberately erased. This also applies to accidents in which no airbag was triggered, which is exactly why the fault persists with an ordinary tool.

Aged components and cold solder joints cause faults that only occur intermittently and are therefore hard to pin down.

Moisture and corrosion impair the contact at plug connections. Voltage spikes, for example from a weak battery or a jump start, place additional stress on the electronics.

How can you tell that the MR587757 DPSB is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears on the display. In addition, the diagnostic tool cannot establish a connection to the control unit, or the fault memory cannot be erased. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The warning light is the clearest sign that the system has detected a fault. It also lights up when hardly anything noticeable occurs in everyday driving.

If the light comes on only intermittently, have the fault memory read out anyway. The entry remains stored even when the indicator has gone out again.

Which vehicles is the MR587757 DPSB fitted in?

The control unit MR587757 DPSB is fitted in these vehicles: Mitsubishi Colt CZ (2004-2008) and CZ Facelift (2008-2012).

The following overview shows the vehicles for which the unit is listed:

• Mitsubishi Colt CZ (2004-2008)
• Mitsubishi Colt CZ Facelift (2008-2012)

Compare the part number on the label of the removed unit with this page. This tells you whether it is the right unit. Also have the fault memory read out, because only the result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 285001684, 285001685, 8635A210, 8635A213, 8635A222, 8635A223.

How does the repair of the MR587757 DPSB work?

First have the fault memory read out and enclose the log. Then disconnect the battery, only then remove the control unit, create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days; during this time Airbag24 tests the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test.

This order is for your safety. The control unit is only removed once the battery has been disconnected.

After the function test your own unit is sent back to you. The stated time refers only to the testing, repairing and checking carried out 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 MR587757 DPSB get to Airbag24?

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

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