Airbag control unit with part number 77960-T5L-Z510-M1

What does the airbag control unit 77960-T5L-Z510-M1 do?

As an airbag control unit, the unit 77960-T5L-Z510-M1 controls the SRS restraint system of Honda. It evaluates the signals from the crash sensors, determines within milliseconds in a crash which airbags and seatbelt pretensioners fire, and checks the system continuously during operation. It indicates faults via the airbag warning light.

During operation the control unit constantly tests its connections and sensors. It stores irregularities in the fault memory, from where they can be read out later.

After a crash, it stores crash data and locks itself.

Why does the control unit 77960-T5L-Z510-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag has fired. A standard diagnostic tool cannot erase it. Other causes include ageing electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes, for example from a weak battery or a jump start.

Crash data remains in the memory even when the vehicle drives normally again after the accident.

The other causes affect the electronics directly. Ageing and corrosion alter contacts over time, and voltage spikes can damage components even when they occur only briefly.

How can you tell that the 77960-T5L-Z510-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and that is the clearest sign of a defect. In addition there are fault messages in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to fire.

The warning light is one of the most important indicators on the vehicle, because it affects the entire restraint system.

If the diagnostic tool cannot connect, the fault memory cannot be read out and the cause remains open.

Which vehicles is the 77960-T5L-Z510-M1 fitted in?

The control unit 77960-T5L-Z510-M1 is fitted in these vehicles: Honda Jazz GK (2013-2023).

This overview shows the known assignments:

• Honda Jazz GK (2013-2023)

Before that, compare the part number on the label of the removed unit with this page. This only shows that it is the correct unit. Also have the fault memory read out beforehand, because the log shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-T5A-A212-M1, 77960-T5A-E010-M1, 77960-T5A-E011-M1, 77960-T5A-E020-M1, 77960-T5A-F010-M1, 77960-T5A-F011-M1.

How does the repair of the 77960-T5L-Z510-M1 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send in the well-packed unit.

Airbag24 tests the unit on the test bench, replaces defective components, erases stored crash data and tests the function. The unit then goes back to you.

The order is for safety. Processing at Airbag24 usually takes 3–4 working days and comprises only testing, repairing and function testing. 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-T5L-Z510-M1 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

The printed repair order goes into the parcel, and you pack the unit shock-proof.