Airbag control unit with part number 77960-S9A-Y814-M1

What does the airbag control unit 77960-S9A-Y814-M1 do?

The airbag control unit 77960-S9A-Y814-M1 controls the restraint system (SRS) in Honda. It evaluates the crash sensors, decides in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the entire system. Faults are shown via the airbag warning light.

Monitoring runs independently of the driver during operation. If the unit detects a deviation, it stores an entry in the fault memory.

After an accident, it stores crash data and then locks itself. This also makes it the storage for accident data.

Why does the control unit 77960-S9A-Y814-M1 fail?

Most often the cause is crash data stored in the memory after an accident, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes can also be causes.

An ordinary diagnostic tool cannot remove these entries, so simply clearing them does not help.

The other causes are rather gradual in nature: ageing, solder joints, corrosion and voltage act on the circuit over a longer period.

How can you tell that the 77960-S9A-Y814-M1 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently. In addition, there are fault messages in the instrument cluster, the diagnostic tool has no connection to the control unit, and the fault memory cannot be cleared. In this state, airbags and seatbelt pretensioners may possibly not deploy in a crash.

These signs are clear enough to justify an examination. Please have the vehicle checked promptly.

Which vehicles is the 77960-S9A-Y814-M1 fitted in?

The control unit 77960-S9A-Y814-M1 is fitted in these vehicles: Honda CR-V 2 RD (2001-2006). Part number and vehicle registration document are used for matching.

The models with this part number are listed here:

• Honda CR-V 2 RD (2001-2006)

Compare the part number on the label of the removed unit with this page; this only ensures that you have the correct unit in front of you. Have the fault memory read out beforehand. Only this result shows whether the control unit itself 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-Y814-M1 work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit 77960-S9A-Y814-M1. Then create the repair order online and send the unit in well packed. Checking, repairing and testing at Airbag24 usually take 3–4 working days.

This sequence is mandatory, because the unit may only be removed once the battery has been disconnected.

Airbag24 examines the unit on the test bench, repairs defective components, deletes the stored crash data and carries out a functional test. Then 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-S9A-Y814-M1 get to Airbag24?

You send the unit in as a parcel, or you 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 shockproof.