Airbag control unit with part number 77960-SZT-N810-M2

What does the airbag control unit 77960-SZT-N810-M2 do?

The airbag control unit 77960-SZT-N810-M2 coordinates the restraint system (SRS) for Honda. It evaluates the crash sensors, determines in a crash within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

As soon as it detects a fault, it shows it via the airbag warning light. After an accident it stores crash data and locks itself.

It is the link between sensors, wiring and triggering units. The function of the entire restraint system therefore depends on this unit.

Why does the control unit 77960-SZT-N810-M2 fail?

For 77960-SZT-N810-M2, the most common cause is crash data stored after an accident, even if no airbag has triggered. Added to this are aged electronics, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

Crash data remains in memory after an accident, even if no triggering took place. It cannot be deleted with a normal diagnostic tool, and this is exactly what Airbag24 takes care of during the repair.

Aged components, cold solder joints and moisture at the plug connections impair signal transmission. Voltage spikes, for example from a weak battery or when connecting to a jump start, can additionally stress components.

Which cause is actually present can only be determined from the fault memory that has been read out.

How can you tell that the 77960-SZT-N810-M2 is defective?

A defect on the 77960-SZT-N810-M2 shows up as the airbag warning light in the instrument cluster, a fault message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

The airbag warning light in the instrument cluster is the most important warning signal. It lights up constantly or only intermittently, and a fault message in the instrument cluster accompanies it.

If no connection to the control unit can be made or the fault memory remains, that indicates a fault. Airbags and seatbelt pretensioners may possibly not trigger in an emergency.

Which vehicles is the 77960-SZT-N810-M2 fitted in?

The control unit 77960-SZT-N810-M2 matches the stored models of Honda. It is fitted in these vehicles: Honda CR-Z ZF1 (2010-2016).

The list shows the known vehicles for this part number.

• Honda CR-Z ZF1 (2010-2016)

Comparing the part number on the label with this page ensures only that you have the correct unit. Have the fault memory read out in advance, because this 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 77960-SZT-A011, 77960-SZT-A011-M2.

How does the repair of the 77960-SZT-N810-M2 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit 77960-SZT-N810-M2. Then create the repair order online and send in the unit well packed.

The sequence is binding for safety reasons.

At Airbag24 the unit is checked on the test bench, defective components are replaced, the crash data is deleted and a function test is carried out. 3–4 working days are usually planned for this.

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-N810-M2 get to Airbag24?

You send the control unit 77960-SZT-N810-M2 as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back via UPS.

Print the repair order and put it in the parcel; the unit is packed shock-resistant.