Airbag control unit with part number 77960-SZT-H810-M2

What does the airbag control unit 77960-SZT-H810-M2 do?

The airbag control unit 77960-SZT-H810-M2 coordinates the restraint system (SRS) of Honda. Based on the crash sensors, it decides within milliseconds which airbags and seatbelt pretensioners are triggered in an accident, and monitors the system continuously.

The unit shows faults via the airbag warning light in the instrument cluster.

After an accident it writes crash data to memory and then locks itself.

Why does the control unit 77960-SZT-H810-M2 fail?

The most common cause is crash data in memory after an accident, even if no airbag has deployed. A standard diagnostic tool cannot remove it. Further causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data remains stored until Airbag24 removes it during the repair.

Aged electronic components and cold solder joints can cause malfunctions that have nothing to do with the accident.

Moisture and corrosion at the plug connections worsen the contact, while voltage spikes, for example from jump-starting, strain the electronics.

How can you tell that the 77960-SZT-H810-M2 is defective?

A glow of the airbag warning light in the instrument cluster, permanent or intermittent, is among the signs. Added to this are an error message in the instrument cluster, a diagnostic tool without connection and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

• Airbag warning light permanently or intermittently active
• Fault message in the instrument cluster
• Diagnostic tool cannot reach the control unit
• Fault memory cannot be emptied

The warning light is a clear message from the system, and you are well advised not to ignore it.

Which vehicles is the 77960-SZT-H810-M2 fitted in?

The airbag control unit 77960-SZT-H810-M2 is fitted in these vehicles: Honda CR-Z ZF1 (2010-2016).

Below you can see the vehicles recorded for this part number.

• Honda CR-Z ZF1 (2010-2016)

Matching the part number on the label of the removed unit with this page only tells you that it is the right unit. As for the cause, the fault memory decides: have it read out beforehand, since it shows whether the control unit itself is affected or a plug or cable.

For the same vehicles, we also repair control units with the part numbers 77960-SZT-A011, 77960-SZT-A011-M2.

How does the repair of the 77960-SZT-H810-M2 work?

First the log of the fault memory, then disconnect the battery and only after that remove the control unit 77960-SZT-H810-M2: that is the intended order for safety reasons. For the work at Airbag24, 3–4 working days are generally planned.

Then create the repair order online and send the well-packed unit in. Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and performs a function test.

You receive your own unit back afterwards. 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-SZT-H810-M2 get to Airbag24?

You send the control unit 77960-SZT-H810-M2 in as a parcel, or alternatively book a UPS collection for an extra charge. After the repair, it is returned to you by UPS.

A printed repair order belongs in the parcel, and the unit has to be packed shockproof.