Airbag control unit with part number 77960-SWA-Z613-M1

What does the airbag control unit 77960-SWA-Z613-M1 do?

The airbag control unit 77960-SWA-Z613-M1 is the central control unit of the restraint system (SRS) of Honda. It evaluates crash sensors, determines in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system during operation. After an accident it stores crash data and locks itself.

The decision on triggering is made within milliseconds. The unit must therefore be ready for operation at all times, which is why it checks itself continuously.

If it detects a fault, it reports it to the airbag warning light in the instrument cluster. The light is therefore the most important feedback from the system.

Why does the control unit 77960-SWA-Z613-M1 fail?

The most common cause is crash data stored after an accident, even without an airbag triggering, which a normal diagnostic tool cannot delete. Ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes can also lead to failure.

Crash data remains in the memory until a repair removes it. A diagnostic tool from a workshop finds the entry but does not delete it.

Ageing components and cold solder joints lead to contact problems. Moisture and corrosion at plug connections distort the signals the unit needs.

Voltage spikes, for example from a weak battery or a jump start, place a permanent load on the electronics and should therefore not be underestimated.

How can you tell that the 77960-SWA-Z613-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears in the instrument cluster, the diagnostic tool cannot find the control unit, and the fault memory cannot be cleared. In that case airbags and seatbelt pretensioners may possibly not deploy in an emergency.

The airbag warning light in the instrument cluster shows the fault as soon as it occurs. You should not ignore this display, even if the vehicle continues to drive without problems, because the warning concerns the restraint system as a whole.

A diagnostic tool that cannot establish a connection and a fault memory that cannot be emptied are further signs. Both suggest that the control unit is no longer working properly.

Which vehicles is the 77960-SWA-Z613-M1 fitted in?

The 77960-SWA-Z613-M1 is fitted in these vehicles: Honda CR-V 3 RE (2006-2012).

The list shows the vehicles stored for this part number.

• Honda CR-V 3 RE (2006-2012)

You should compare the part number on the label of the removed unit with this page. This only confirms that you have the correct unit in front of you. Have the fault memory read out beforehand, because it shows whether the control unit or a plug or cable is causing the fault.

For the same vehicles, we also repair control units with the part numbers 77960-SWA-G214-M4, 77960-SWA-S21, 77960-SWA-S214-M4, 77960-T0AA-110-M1, 77960-TA0-A031, 77960-TLA-A25.

How does the repair of the 77960-SWA-Z613-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Online, create the repair order and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench and replaces defective components where necessary. Crash data is deleted by Airbag24 during the repair, and a functional test follows.

Your own unit is returned to you afterwards. 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-SWA-Z613-M1 get to Airbag24?

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

Enclose the printed repair order in the parcel and pack the unit shock-resistant so that it survives shipping undamaged.