Airbag control unit with part number 77960-SZA-R120-M1

What does the airbag control unit 77960-SZA-R120-M1 do?

The control unit 77960-SZA-R120-M1 is the central control unit of the restraint system (SRS) of Honda. In an impact it calculates within fractions of a second which airbags and seatbelt pretensioners are triggered, and monitors the system permanently.

A fault detected is shown via the airbag warning light.

If the unit detects an accident, it secures the crash data in memory and locks itself.

Why does the control unit 77960-SZA-R120-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed, and these cannot be removed with a normal diagnostic tool. Further causes are aged electronic components, cold solder joints, moisture and corrosion at connectors, and voltage spikes, for example from a weak battery or jump start.

Which of these causes applies in the individual case is first clarified by examining the unit.

Moisture and corrosion mainly attack connectors, so they are among the points checked during an examination.

How can you tell that the 77960-SZA-R120-M1 is defective?

If the airbag warning light in the instrument cluster stays on permanently or intermittently, that is a clear sign. It is accompanied by a fault message, a diagnostic tool without connection to the control unit and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then possibly not deploy.

The warning light is the sign that is noticed first, and it should not be ignored.

If no connection to the control unit is established, it is initially unclear whether the unit itself or its wiring is affected.

Which vehicles is the 77960-SZA-R120-M1 fitted in?

For Honda, the 77960-SZA-R120-M1 is fitted in these vehicles: Honda Pilot 2nd generation (2008-2011) and 2nd generation Facelift (2011-2015).

The list here contains the vehicles recorded for this number.

• Honda Pilot 2nd generation (2008-2011)
• Honda Pilot 2nd generation Facelift (2011-2015)

If the number on the label of the removed unit matches this page, the right unit is clearly identified. The fault memory must be read out beforehand, because only this log clarifies whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 77960-SZA-R120-M1 work?

At Airbag24, checking, repair and testing usually take 3–4 working days. Beforehand have the log of the fault memory created, disconnect the battery and remove the control unit.

Then you create a repair order online and send in the well-packed unit. Airbag24 checks it on the test bench, replaces defective components, deletes stored crash data and runs a function test.

Afterwards your own unit comes 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-SZA-R120-M1 get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 returns the control unit 77960-SZA-R120-M1 to you by UPS after the repair.

Enclose the printed repair order with the parcel, and pack the control unit shock-proof.