Airbag control unit with part number 77960-T0N-Z510-M3

What does the airbag control unit 77960-T0N-Z510-M3 do?

The airbag control unit 77960-T0N-Z510-M3 is the central electronics of the SRS restraint system in Honda vehicles. It evaluates crash sensors, determines whether airbags and seatbelt pretensioners are triggered in an accident, and monitors the system continuously. After an accident it stores crash data and locks itself.

It reports irregularities via the airbag warning light, which belongs to the warning lights in the instrument cluster.

Why does the control unit 77960-T0N-Z510-M3 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed. Other causes include aged components, cold solder joints, corrosion on connectors and voltage spikes.

A normal diagnostic tool does not erase crash data, so the fault remains in memory. Further causes at a glance:

• aged components on the circuit board
• solder joints that have gone cold
• corrosion and moisture on connectors
• voltage spikes from a weak battery or jump-starting

How can you tell that the 77960-T0N-Z510-M3 is defective?

The airbag warning light is the first sign: it lights up permanently or intermittently in the instrument cluster. Accompanying signs include fault messages, a missing connection to the diagnostic tool or a fault memory that cannot be cleared.

As long as this condition persists, airbags and seatbelt pretensioners may not deploy in an emergency. The warning light is therefore a reason to have the system examined.

Which vehicles is the 77960-T0N-Z510-M3 fitted in?

The control unit 77960-T0N-Z510-M3 is fitted in the following vehicle: Honda CR-V 4 RM (2012-2018).

The assignment of this part number covers the following details:

• Honda CR-V 4 RM (2012-2018)

Comparing the part number on the label with this page only confirms that you have removed the correct unit. Whether the control unit is defective or a connector or cable is the cause will only be established by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 77960-T0A-3070-M4, 77960-T0A-A012-M1, 77960-T0A-A013-M1, 77960-T0A-A210-M1, 77960-T0A-A212-M1, 77960-T0A-A230-M1.

How does the repair of the 77960-T0N-Z510-M3 work?

The first step is reading out the fault memory; its log is enclosed with the package. Only then do you disconnect the battery and remove the control unit 77960-T0N-Z510-M3. Afterwards you create a repair order online and send off the well-packed unit.

Airbag24 examines the unit, replaces defective components and erases stored crash data. A functional test is carried out at the end, after which your own unit is returned. Processing at Airbag24 usually takes 3–4 working days, and this time covers examining, repairing and testing only.

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-T0N-Z510-M3 get to Airbag24?

The control unit 77960-T0N-Z510-M3 travels to Airbag24 by parcel; alternatively, UPS collection for an extra charge. After the repair, UPS returns it.

The printed repair order is in the package, and the unit is packed shock-proof.