Airbag control unit with part number 77960-SJC-A011-M1

What does the airbag control unit 77960-SJC-A011-M1 do?

The airbag control unit 77960-SJC-A011-M1 is part of the restraint system (SRS) of Honda and is its central component. It processes the signals from the impact sensors, selects the appropriate airbags and seatbelt pretensioners in an accident and monitors the entire sequence.

During driving it continuously checks its inputs and outputs. If a fault occurs, it stores it in the fault memory and indicates it via the airbag warning light.

After an impact the unit creates crash data and is locked afterwards.

Why does the control unit 77960-SJC-A011-M1 fail?

The most common cause is crash data from an accident, even when no airbag has deployed; it cannot be deleted with a normal diagnostic tool. Other triggers are aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Crash data is a record of the impact stored in the control unit. No airbag has to have deployed for it to exist. Airbag24 deletes this data during the repair.

The other causes can develop gradually: components age, solder joints lose stability over time, and moisture promotes corrosion in the contacts. Brief voltage spikes when starting with external power add further strain to the electronics.

How can you tell that the 77960-SJC-A011-M1 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, a fault message appears in the instrument cluster, a diagnostic tool finds no connection, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The warning light is the signal you should look at first. If it does not go out after switching on the ignition, there is a fault that needs to be clarified.

Connection problems with the diagnostic tool do not always concern the control unit itself. Plugs, cables and the power supply can also be behind them, and only a readout separates these possibilities.

Which vehicles is the 77960-SJC-A011-M1 fitted in?

This is a control unit from Honda. The 77960-SJC-A011-M1 is fitted in these vehicles: Honda Ridgeline 1st generation (2005-2014).

The list of vehicles follows directly below.

• Honda Ridgeline 1st generation (2005-2014)

Compare the part number on the unit with this page. That way you know you have the right control unit in front of you. Still have the fault memory read out beforehand, because only this log shows whether the control unit itself is defective or whether a plug, for example, is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-T6Z-A01, 77960-T6Z-A02, 77960-T6Z-A03, 77960SJCA210M1, 77960T6ZA030M2.

How does the repair of the 77960-SJC-A011-M1 work?

First you have the fault memory read out and enclose the log with the parcel. Then you disconnect the battery and remove the control unit. Next, create a repair order online and pack the unit carefully. At Airbag24, checking, repairing and testing usually take 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, deletes the stored crash data and carries out a function test. After the function test, Airbag24 sends your own unit back to you.

The time frame applies only to the work at Airbag24 and not to your steps before that. 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-SJC-A011-M1 get to Airbag24?

Either you send the control unit 77960-SJC-A011-M1 as a parcel, or you book a UPS collection. After the repair the unit comes back to you by UPS.

Put the printed repair order into the parcel, and pack the control unit shock-proof.