Airbag control unit with part number 77960-THR-X010-M2

What does the airbag control unit 77960-THR-X010-M2 do?

The airbag control unit 77960-THR-X010-M2 coordinates the restraint system (SRS) of Honda as a central unit. It monitors the sensors, calculates in a crash the triggering of airbags and seatbelt pretensioners, and reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

The signals are evaluated within milliseconds, before triggering begins. This speed is necessary because a crash leaves very little time for the decision.

The unit stores faults in the fault memory, which can be read with a diagnostic tool.

Why does the control unit 77960-THR-X010-M2 fail?

The most common cause is stored crash data from an earlier accident, even without a triggered airbag; with a normal diagnostic tool they cannot be removed. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from weak batteries or jump-starting.

After an accident the unit records crash data, regardless of whether an airbag has deployed. The unit keeps them until they are removed during the repair, and that is exactly what Airbag24 does.

In addition there is the electronics itself, whose components wear out over the years. Solder joints can have gone cold, and moisture and corrosion attack the contacts.

How can you tell that the 77960-THR-X010-M2 is defective?

A defect shows itself first through the airbag warning light, which lights up permanently or intermittently in the instrument cluster, and through a fault message. The diagnostic tool may then not reach the control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may not trigger in an emergency.

Typical signs at a glance:

• Warning light on permanently or intermittently
• Fault message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory cannot be cleared

One of these signs is enough to have the restraint system checked. The warning light shows the defect directly, before any test finds it.

Which vehicles is the 77960-THR-X010-M2 fitted in?

The control unit 77960-THR-X010-M2 is found in Honda in: Honda Odyssey 5th generation (from 2013).

The vehicles that are recorded for this part number in our data are listed in this overview.

• Honda Odyssey 5th generation (from 2013)

First check whether the part number on the label of the removed unit matches this page; that only confirms that it is the correct unit. The actual cause is revealed only by reading out the fault memory, because it shows whether the control unit is defective or whether a plug or cable is responsible.

For the same vehicles, we also repair control units with the part numbers 77960-THR-A02, 77960-THR-A03, 77960-TK8-A011-M1, 77960-TK8-D01.

How does the repair of the 77960-THR-X010-M2 work?

First read out the fault memory, attach the log and disconnect the battery; only then remove the control unit. Then create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 a technician checks the unit on the test bench. Defective components are repaired or replaced, then we delete the stored crash data and carry out a function test.

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 77960-THR-X010-M2 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge; the return after the repair is made by UPS.

The repair order you created online belongs printed in the parcel. Pack the unit shock-resistant so that transport does no damage.