Airbag control unit with part number 8635A224 DPSB

What does the airbag control unit 8635A224 DPSB do?

The airbag control unit 8635A224 DPSB is the control unit of the restraint system (SRS) of Mitsubishi. It evaluates the signals from the crash sensors, decides in an accident within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. After an accident it stores crash data and locks itself.

The control unit shows faults via the airbag warning light. The connected sensors, airbags and seatbelt pretensioners are monitored.

During driving the control unit normally goes unnoticed. It only becomes visible when a fault is present or the lock engages after an accident.

Why does the control unit 8635A224 DPSB fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase them. Other causes are voltage spikes, corrosion at plug connections, cold solder joints and aged electronic components.

The crash data remain stored until they are specifically removed. Only after that does the message disappear, unless another fault is present.

• Voltage spikes, for example with a weak battery or after jump-starting
• Moisture and corrosion at plug connections
• Cold solder joints
• Aged electronic components

A test of the system shows which cause applies in the individual case.

How can you tell that the 8635A224 DPSB is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears in the instrument cluster, and the diagnostic tool does not find the control unit. The fault memory then cannot be cleared, and airbags and seatbelt pretensioners may fail to deploy in an emergency.

• Airbag warning light lights up permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool gets no connection to the control unit
• Fault memory cannot be cleared

The warning light indicates the fault. Whoever sees it should have the fault memory read out promptly.

Only the readout shows whether the control unit is actually affected.

Which vehicles is the 8635A224 DPSB fitted in?

The control unit 8635A224 DPSB is fitted in these vehicles: Mitsubishi Colt CZ (2004-2008) and CZ Facelift (2008-2012).

The list shows the vehicles that are recorded at Airbag24 for this part number.

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

Two steps help with the assignment. Compare the part number on the label of the removed unit with this page, so that you have the right unit. Also have the fault memory read out beforehand, because this result shows whether the control unit is the cause or a plug or cable.

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 8635A224 DPSB work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit. Then create a repair order online and send in the well-packed unit. Airbag24 tests the unit, repairs defective components, erases stored crash data and runs a function test.

Processing at Airbag24 usually takes 3–4 working days. Afterwards your own unit goes back to you.

The sequence serves safety, so removal follows only once the battery is disconnected.

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 8635A224 DPSB get to Airbag24?

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

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