Airbag control unit with part number 77960-TEA-M830-M4

What does the airbag control unit 77960-TEA-M830-M4 do?

The airbag control unit 77960-TEA-M830-M4 is the central control unit of the restraint system (SRS) for Honda. It evaluates the crash sensors and decides within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered.

The unit also monitors the entire system continuously. If it detects a fault, it displays this via the airbag warning light. After an accident it stores crash data and then locks itself.

Why does the control unit 77960-TEA-M830-M4 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. Further causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Stored crash data cannot be erased with a normal diagnostic tool. As long as it is in the memory, the control unit continues to show the condition.

The other causes are more general in nature. Components age, solder joints can go cold, and moisture or corrosion affect plug connections. Voltage spikes arise, among other things, with a weak battery or when starting with a jump start.

How can you tell that the 77960-TEA-M830-M4 is defective?

An airbag warning light in the instrument cluster indicates the defect when it lights up permanently or intermittently. A fault message in the instrument cluster, a missing contact with the diagnostic tool or a fault memory that cannot be cleared are also signs.

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

If signs of this kind appear, have the system checked. In an emergency, airbags and seatbelt pretensioners may fail to trigger, so a prompt check is advisable.

Which vehicles is the 77960-TEA-M830-M4 fitted in?

The airbag control unit 77960-TEA-M830-M4 is fitted in this vehicle: Honda Civic 10th generation (2015-2022).

The list of vehicles fitted with this unit follows below.

• Honda Civic 10th generation (2015-2022)

(a) Comparing the part number on the label of the removed unit with this page only confirms that you have the right unit. (b) Only the fault log read out beforehand shows whether the control unit itself is the cause or whether a plug or cable is responsible.

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-M830-M4 work?

Before removal, have the fault memory read out, then disconnect the battery and remove the control unit 77960-TEA-M830-M4. Online, create the repair order, then send the unit in well packed. At Airbag24, processing usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components and erases stored crash data. Afterwards Airbag24 carries out a function test before your own unit 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-M830-M4 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. Airbag24 sends it back to you by UPS after the repair.

The printed repair order goes into the parcel, and the unit is packed shock-proof.