Airbag control unit with part number 77960-SDA-C013-M1

What does the airbag control unit 77960-SDA-C013-M1 do?

The airbag control unit 77960-SDA-C013-M1 is the central control unit of the restraint system (SRS) in Honda vehicles. It evaluates the signals from the crash sensors and, in an accident, decides in an instant which airbags and seatbelt pretensioners are triggered.

During operation, the unit monitors the entire system. If it detects a fault, it reports it via the airbag warning light in the instrument cluster, so you can keep an eye on the condition at all times.

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

Why does the control unit 77960-SDA-C013-M1 fail?

For the 77960-SDA-C013-M1, the most common cause is crash data stored after an accident, even if no airbag has deployed. Further causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery or a jump start.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 removes it as part of the repair.

The other causes concern the unit itself or its connections. Which of them applies in an individual case is only shown by the inspection of the unit.

How can you tell that the 77960-SDA-C013-M1 is defective?

A defect in the 77960-SDA-C013-M1 shows itself through an airbag warning light that lights up permanently or intermittently, through an error message in the instrument cluster, or through the diagnostic tool being unable to connect. A fault memory that cannot be cleared is a further sign.

Typical signs are:

• The airbag warning light lights up permanently or flickers intermittently.
• An error message appears in the instrument cluster.
• The diagnostic tool finds no connection to the control unit.
• The fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may fail to deploy with such a defect. It is therefore advisable not to ignore the warning.

Which vehicles is the 77960-SDA-C013-M1 fitted in?

The control unit 77960-SDA-C013-M1 is fitted in these vehicles: Honda Accord 7th generation (2002-2008).

The overview of the vehicles for this unit follows here:

• Honda Accord 7th generation (2002-2008)

Before sending, compare the part number on the label of the removed unit with this page, so that you can be sure you have the right unit. Also have the fault memory read out in advance, because only this record shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-SDA-306, 77960-SDN-C211-M1, 77960-SDR-A021-M4.

How does the repair of the 77960-SDA-C013-M1 work?

For the repair of the 77960-SDA-C013-M1, first read out the fault memory and attach the log. Then disconnect the battery and only afterwards remove the control unit. Next, create a repair order online and pack the unit well before sending it in.

At Airbag24, the unit is examined on the test bench. Defective components are repaired, stored crash data is erased, and a function test follows. Processing at Airbag24 usually takes 3–4 working days. The customer's own unit then goes back to them.

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-SDA-C013-M1 get to Airbag24?

You send the control unit 77960-SDA-C013-M1 as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

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