Airbag control unit with part number 77960-3A0-H620-M1

What does the airbag control unit 77960-3A0-H620-M1 do?

The airbag control unit 77960-3A0-H620-M1 controls the restraint system (SRS) in Honda. It checks the crash sensors, decides after an impact within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously.

If the unit detects a fault, it reports it via the airbag warning light in the instrument cluster.

After an accident the unit stores crash data and locks itself. The lock is lifted only by the repair, and only by it.

Why does the control unit 77960-3A0-H620-M1 fail?

The most common cause is crash data stored after an accident, even without a triggered airbag. In addition there are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be deleted with a normal diagnostic tool. At Airbag24 it is removed during the repair.

The remaining causes act over a longer period: ageing of the components, moisture and corrosion attack the electronics. Voltage spikes occur, for example, with a weak battery or jump-starting.

How can you tell that the 77960-3A0-H620-M1 is defective?

A defect can be recognised by the airbag warning light, which lights up in the instrument cluster permanently or intermittently. A fault message, a diagnostic tool without connection to the control unit or a fault memory that cannot be erased also indicate it.

The following signs appear in detail:

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

Then airbags and seatbelt pretensioners may not trigger in an emergency. Such a finding should be taken seriously.

Which vehicles is the 77960-3A0-H620-M1 fitted in?

The list gives a first indication. The airbag control unit 77960-3A0-H620-M1 is fitted in these vehicles: Honda CR-V 6 (from 2022).

The individual entries are listed here:

• Honda CR-V 6 (from 2022)

When comparing the part number on the label of the removed unit with this page, make sure you have the correct unit in front of you. To establish whether the control unit is defective or a connector or cable is the cause, it is advisable to have the fault memory read out beforehand.

How does the repair of the 77960-3A0-H620-M1 work?

First have the fault memory read out and attach the log, then disconnect the battery and only now remove the control unit. Afterwards create the repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days; during this, crash data is deleted, defective components are repaired and a function test is carried out.

The order protects you when working with the airbag system.

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 77960-3A0-H620-M1 get to Airbag24?

The unit goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair Airbag24 dispatches it back by UPS.

The printed repair order goes into the parcel, and the unit is packed shock-resistant.