Airbag control unit with part number 77960-TEA-Z910-M4

What does the airbag control unit 77960-TEA-Z910-M4 do?

The airbag control unit 77960-TEA-Z910-M4 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors, decides in the event of an accident within milliseconds on airbags and seatbelt pretensioners, and monitors the system continuously.

It reports faults via the airbag warning light. The check continues throughout the whole journey.

After an accident the device stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 77960-TEA-Z910-M4 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot remove this data. Other causes are aged electronics, cold solder joints, moisture and corrosion, and voltage spikes.

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

Crash data remains in the device until Airbag24 erases it during the repair. Which cause is actually present is shown only by a diagnosis.

How can you tell that the 77960-TEA-Z910-M4 is defective?

A defect on the 77960-TEA-Z910-M4 shows itself through an airbag warning light that stays on permanently or intermittently, a fault message in the instrument cluster, and a diagnostic tool without connection. A fault memory that cannot be cleared also belongs to these signs.

• Airbag warning light, permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

In such a case, airbags and seatbelt pretensioners may not deploy in an emergency. Clarifying the matter without delay is therefore advisable.

Which vehicles is the 77960-TEA-Z910-M4 fitted in?

The control unit 77960-TEA-Z910-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

The list shows the vehicles for which we have this part number on record.

• Honda Civic 10th generation (2015-2022)

Compare the part number on the label of the removed device with this page. That only clarifies whether it is the right device. Have the fault memory read out beforehand, because this result shows whether the control unit is defective or whether a plug or a 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-Z910-M4 work?

Processing at Airbag24 usually takes 3–4 working days. First you read out the fault memory and attach the log, then disconnect the battery and only then remove the device. Afterwards create a repair order online and send the device in well packed.

Airbag24 checks the device on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Afterwards your own device is returned 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-TEA-Z910-M4 get to Airbag24?

You send the device 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 into the parcel and pack the device shockproof.