Airbag control unit with part number 77960-T0A-F610-M4

What does the airbag control unit 77960-T0A-F610-M4 do?

The airbag control unit 77960-T0A-F610-M4 coordinates the restraint system (SRS) in Honda. It measures via the crash sensors how severe an impact is and then decides on the triggering of airbags and seatbelt pretensioners.

During driving the unit checks the functional readiness of the system. A fault makes the airbag warning light in the instrument cluster come on.

A crash leaves crash data in memory, after which the unit is locked.

Why does the control unit 77960-T0A-F610-M4 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A standard diagnostic tool cannot remove it. Furthermore, aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes act on the unit.

The data stays stored until it is deleted during a repair.

The electronics age, and solder joints may have been made cold; moisture acts on the contacts.

Voltage spikes arise, for example, with a weak battery or a jump start. Only a readout shows which of these points actually applies.

How can you tell that the 77960-T0A-F610-M4 is defective?

A defect shows itself through the airbag warning light in the instrument cluster, through an error message and through a fault memory that cannot be cleared. In an emergency the airbags and seatbelt pretensioners may not trigger.

The signs at a glance:

• airbag warning light stays on permanently or intermittently
• error message in the instrument cluster
• diagnostic tool finds no connection to the control unit
• fault memory cannot be cleared

The warning light alone does not show where the fault lies, but it does show that one is present.

Which vehicles is the 77960-T0A-F610-M4 fitted in?

The 77960-T0A-F610-M4 is fitted in: Honda CR-V 4 RM (2012-2018).

The list is shown below, one line per vehicle.

• Honda CR-V 4 RM (2012-2018)

A label comparison with this page only ensures that the unit is the correct one. Whether the control unit is defective or a connector or cable is behind the fault is shown only by the fault memory read out beforehand.

For the same vehicles, we also repair control units with the part numbers 5WK43782, 77960-SWA-G212-M4, 77960-SWA-G214-M4, 77960-T1G-G920-M4.

How does the repair of the 77960-T0A-F610-M4 work?

First read out the fault memory and secure the log. Then disconnect the battery, and only then remove the control unit 77960-T0A-F610-M4. Next create the repair order online, enclose the log and pack the unit well before sending it.

Airbag24 checks the unit on the test bench, replaces defective components, deletes the stored crash data and carries out a function test. Afterwards your own unit goes back to you.

Inspection, repair and function test at Airbag24 usually take 3–4 working days. 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-T0A-F610-M4 get to Airbag24?

You send the control unit 77960-T0A-F610-M4 in as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair.

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