Airbag control unit with part number 77960-TEA-P510-M4

What does the airbag control unit 77960-TEA-P510-M4 do?

The airbag control unit 77960-TEA-P510-M4 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors, decides in an accident within milliseconds on airbags and seatbelt pretensioners, and monitors the system continuously. After an accident, it stores crash data and locks itself.

Sensors, cables, connectors and trigger units are checked continuously. If the unit detects a deviation, it creates an entry in the fault memory and reports the fault via the airbag warning light.

In a crash, the evaluation must be correct without delay. A defective control unit therefore affects the entire restraint technology of the vehicle.

Why does the control unit 77960-TEA-P510-M4 fail?

Stored crash data is most often the cause, even if no airbag was triggered in the accident; a normal diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

• Stored crash data after an accident
• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from jump-starting or a weak battery

The crash data is the reason why a visual inspection alone is not enough. The other causes tend to develop gradually during operation.

How can you tell that the 77960-TEA-P510-M4 is defective?

The airbag warning light in the instrument cluster lights up on the 77960-TEA-P510-M4 permanently or intermittently, and an error message appears in the instrument cluster. In addition, the diagnostic tool cannot reach the control unit, and the fault memory cannot be cleared.

The signs at a glance:

• Airbag warning light, permanently or intermittently
• Error message in the instrument cluster
• No contact with the diagnostic tool
• Fault memory cannot be cleared

In an emergency, the airbags and seatbelt pretensioners may fail to deploy. You should therefore not postpone acting on these signs.

Which vehicles is the 77960-TEA-P510-M4 fitted in?

The 77960-TEA-P510-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

The overview lists the vehicles to which this unit is assigned.

• Honda Civic 10th generation (2015-2022)

First, compare the part number on the label of the removed unit with this page. This only confirms that it is the correct unit. Then have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-SMG-G014-M1, 77960-TBA-A01, 77960-TBA-A02, 77960-TBA-A03, 77960-TBA-A04, 77960-TBA-A05.

How does the repair of the 77960-TEA-P510-M4 work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in well packed. Airbag24 checks it, replaces defective components, erases the crash data and carries out a function test.

The sequence serves your safety and must therefore be followed.

At Airbag24, the unit is examined on the test bench. Your unit is then returned to you. Processing usually takes 3–4 working days, and this time covers only the checking, repairing and testing at Airbag24. 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-TEA-P510-M4 get to Airbag24?

You send the control unit 77960-TEA-P510-M4 in as a parcel or book a UPS collection for an extra charge. After repair, Airbag24 sends it back to you by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.