Airbag control unit with part number 77960-S9A-Y414-M1

What does the airbag control unit 77960-S9A-Y414-M1 do?

The airbag control unit 77960-S9A-Y414-M1 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors, decides in a crash which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After a crash it locks itself; the lock is only lifted by the repair.

The unit stores faults in the fault memory and reports them via the airbag warning light in the instrument cluster.

The seatbelt pretensioners are controlled by the same control unit, which is why their condition is important for the entire restraint system.

Why does the control unit 77960-S9A-Y414-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other possible causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

After an accident, crash data remains stored in the control unit, and only the repair removes it. No airbag has to have deployed for this.

The other causes build up gradually. Electronics age, solder joints become brittle, and moisture or corrosion attack the plug connectors.

Voltage spikes, for example from a weak battery or after a jump start, additionally strain the electronics.

How can you tell that the 77960-S9A-Y414-M1 is defective?

The airbag warning light in the instrument cluster stays on permanently or comes on intermittently, an error message appears in the instrument cluster, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

The airbag warning light is the most conspicuous sign. It may stay on permanently or only light up intermittently, and both indicate a finding in the system. An error message also appears in the instrument cluster.

If the connection to the diagnostic tool cannot be established, or the fault memory stays full despite an attempt to clear it, the control unit or its connection may be affected. Airbags and seatbelt pretensioners may then fail to deploy in an emergency, so a prompt check makes sense.

Which vehicles is the 77960-S9A-Y414-M1 fitted in?

The control unit 77960-S9A-Y414-M1 is fitted in these vehicles: Honda CR-V 2 RD (2001-2006).

The suitable models are listed below:

• Honda CR-V 2 RD (2001-2006)

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. Please have the fault memory read out beforehand, because only the log 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-S9A-A924-M1, 77960-SWA-G214-M4.

How does the repair of the 77960-S9A-Y414-M1 work?

First you have the fault memory read out and attach the log, then you disconnect the battery and only then remove the control unit 77960-S9A-Y414-M1. Next, you create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked on the test bench. Defective components are repaired, stored crash data is erased and a function test is carried out.

Afterwards your own unit goes back 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-S9A-Y414-M1 get to Airbag24?

The unit goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

Place the printed repair order in the parcel, and pack the control unit shockproof.