Airbag control unit with part number 77960-T00-B830-M1

What does the airbag control unit 77960-T00-B830-M1 do?

The airbag control unit 77960-T00-B830-M1 brings together all functions of the restraint system (SRS) in Honda vehicles. It checks the crash sensors, determines in an accident within milliseconds which airbags and seatbelt pretensioners respond, and monitors the system continuously. Detected faults are shown via the airbag warning light.

During driving it evaluates signals and records irregularities in the fault memory.

After an accident, the unit secures crash data and locks itself.

Why does the control unit 77960-T00-B830-M1 fail?

Stored crash data are the most common cause with the 77960-T00-B830-M1, even if no airbag has triggered. A normal diagnostic tool does not erase them. Other triggers are ageing electronics, cold solder joints, moisture or rust at plug connectors, and voltage spikes.

Crash data remain in the memory of the unit after an accident. During the repair, Airbag24 removes this data.

The other causes act over a longer period: components age, solder joints can become brittle, and moisture or rust disrupt the contact. Voltage spikes also stress the electronics.

How can you tell that the 77960-T00-B830-M1 is defective?

With the 77960-T00-B830-M1, the airbag warning light in the instrument cluster shows the fault, either permanently or at intervals. An error message, a diagnostic tool without connection or a fault memory that cannot be cleared confirm the suspicion. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

These signs point to a defect:

• The airbag warning light stays on permanently or lights up again and again
• An error message appears in the instrument cluster
• The diagnostic tool gets no connection to the control unit
• The fault memory remains and cannot be cleared

Report such signs to a workshop promptly.

Which vehicles is the 77960-T00-B830-M1 fitted in?

The control unit 77960-T00-B830-M1 is fitted in these vehicles: Honda City 6th generation (2008-2013). Comparing the part number on the label with this page confirms that you have the right unit in front of you.

The following vehicles belong to this number:

• Honda City 6th generation (2008-2013)

In addition, have the fault memory read out before you remove the control unit. Only the log shows whether the control unit is defective or whether a plug or a cable is causing the fault.

For the same vehicles, we also repair control units with the part numbers 77810-T9DT81ZA, 77960-T00-Y810-M2.

How does the repair of the 77960-T00-B830-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and afterwards remove the control unit 77960-T00-B830-M1. Next you create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

This sequence is mandatory for safety reasons.

On the test bench the unit is examined, damaged components are replaced, crash data are removed, and a function test concludes the work. The return to you then follows.

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-T00-B830-M1 get to Airbag24?

You send the control unit 77960-T00-B830-M1 as a parcel, or you book UPS collection for an extra charge. After the repair, UPS brings the unit back to you.

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