Airbag control unit with part number 77960-T5A-A230-M1

What does the airbag control unit 77960-T5A-A230-M1 do?

The airbag control unit 77960-T5A-A230-M1 acts as the central unit controlling the restraint system (SRS) of Honda. It reads the crash sensors, decides in a collision within milliseconds on airbags and seatbelt pretensioners, and monitors the entire system continuously. After a crash it stores crash data and locks itself.

As long as the vehicle has power, the control unit continuously checks its surroundings. This includes the sensor lines and the output stages for the igniters.

If it detects a deviation, it shows this via the airbag warning light in the instrument cluster. The driver is thus alerted to a fault that should be checked.

Why does the control unit 77960-T5A-A230-M1 fail?

The most frequent cause is crash data stored after a crash, even if no airbag deployed; a normal diagnostic tool cannot delete it. Airbag24 deletes it during the repair. Other causes include aged components, cold solder joints, moisture and corrosion on connectors, and voltage spikes.

The other causes at a glance:

• aged electronic components,
• cold solder joints on the circuit board,
• moisture and corrosion on plug connections,
• voltage spikes from a weak battery or a jump start.

Which cause applies in an individual case is only determined on the test bench at Airbag24.

How can you tell that the 77960-T5A-A230-M1 is defective?

A defect shows up on the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Additionally, an error message on the display, a missing connection of the diagnostic tool and a fault memory that cannot be cleared are signs. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The airbag warning light is the most important signal the control unit sends to the driver. If it stays on or flickers only now and then, have the system checked promptly.

If the diagnostic tool fails to establish a connection, or the fault memory remains full despite attempts to clear it, this is a further indication of a fault in the control unit or its wiring.

Which vehicles is the 77960-T5A-A230-M1 fitted in?

Whether your car is included can be seen at a glance from the model list. The 77960-T5A-A230-M1 is fitted at Honda in these vehicles: Honda Jazz GK (2013-2023).

These models are recorded for this control unit:

• Honda Jazz GK (2013-2023)

Compare the part number on the label of the removed unit with this page to make sure it is the correct unit. This does not answer whether the unit is defective. Have the fault memory read out beforehand, because only that shows whether the control unit or 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-T5A-A230-M1 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand, you read out the fault memory and attach the log, then disconnect the battery and remove the control unit. Finally, you create a repair order online and send the well-packed unit.

Airbag24 checks the unit on the test bench, repairs the affected components, deletes the stored crash data and carries out a function test. These 3–4 working days cover only this work, not the steps you take beforehand.

Afterwards your own unit goes back 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-T5A-A230-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.

Put the printed repair order in the parcel; pack the unit shock-proof.