Airbag control unit with part number 77960-SZT-L110-M2

What does the airbag control unit 77960-SZT-L110-M2 do?

The airbag control unit 77960-SZT-L110-M2 coordinates the restraint system (SRS) of Honda. It reads the signals from the crash sensors, decides in a crash within milliseconds on the deployment of airbags and seatbelt pretensioners, and monitors the system continuously.

The unit shows faults in the system via the airbag warning light in the instrument cluster. This indicator is the first visible hint of a fault for the driver.

After a crash, the control unit stores crash data and locks itself.

Why does the control unit 77960-SZT-L110-M2 fail?

The cause with the 77960-SZT-L110-M2 most often lies in crash data that was stored after a crash, even if no airbag has deployed. Other causes include the ageing of electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes. With this control unit, it is often not possible to erase the crash data; anyone who would like it erased should get in touch with Airbag24 briefly before sending the unit in.

An ordinary diagnostic tool cannot remove these entries. The other causes relate to electronics, plug connectors and the power supply.

Moisture, corrosion and voltage spikes, for example from a weak battery or a jump start, can play a role here.

How can you tell that the 77960-SZT-L110-M2 is defective?

A fault in the 77960-SZT-L110-M2 shows up as the airbag warning light in the instrument cluster, which stays on constantly or intermittently. In addition, there may be an error message in the instrument cluster, no connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared.

In an actual crash, the airbags and seatbelt pretensioners may then fail to deploy. This finding therefore calls for a prompt inspection.

Which vehicles is the 77960-SZT-L110-M2 fitted in?

The control unit 77960-SZT-L110-M2 is fitted in this Honda vehicle: Honda CR-Z ZF1 (2010-2016). This assignment applies to this control unit only.

The vehicle assignment in detail:

• Honda CR-Z ZF1 (2010-2016)

Comparing the part number on the label of the removed unit with this page only ensures that you have the correct unit. Have the fault memory read out first. Only that result shows whether the control unit is defective or whether a connector 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, 77960-SZT-E811-M2, 77960-SZT-G811-M2, 77960-SZT-H810-M2, 77960-SZT-H820-M2.

How does the repair of the 77960-SZT-L110-M2 work?

First have the fault memory read out and include the log. Then disconnect the battery and only then remove the control unit 77960-SZT-L110-M2. Finally, create a repair order online.

Airbag24 checks the unit on the test bench, replaces defective components and carries out a functional test. Processing there usually takes 3–4 working days. If you would like the crash data erased, get in touch with Airbag24 briefly before sending the unit in. The unit is then returned 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-SZT-L110-M2 get to Airbag24?

You send the control unit 77960-SZT-L110-M2 to Airbag24 as a parcel, or alternatively book a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair.

Pack the unit shockproof and place the printed repair order in the parcel.