Airbag control unit with part number 77960-SWA-P614-M4

What does the airbag control unit 77960-SWA-P614-M4 do?

As the central control unit of the restraint system (SRS), the airbag control unit 77960-SWA-P614-M4 controls the airbags and seatbelt pretensioners in Honda. It evaluates the crash sensors and, in an accident, decides within milliseconds on triggering.

Between accidents the unit monitors the system permanently and shows faults via the airbag warning light.

After an accident it creates crash data and locks itself.

Why does the control unit 77960-SWA-P614-M4 fail?

The most common cause lies in crash data stored after an accident, even if no airbag has deployed. A standard diagnostic tool cannot remove this data. Other causes are ageing processes in the electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data only disappears once Airbag24 deletes it during the repair.

Components age on the circuit board, solder joints can be faulty, and moisture attacks the plug contacts. Such processes cannot be detected from the housing alone.

Voltage spikes arise, for example, from a weak battery or when a jump start is connected, and they act on the electronics.

How can you tell that the 77960-SWA-P614-M4 is defective?

A defect shows itself through the airbag warning light, which stays on in the instrument cluster permanently or intermittently. In addition there is an error message, the diagnostic tool cannot establish a connection, and the fault memory remains. In an emergency the airbags and seatbelt pretensioners may then not trigger.

A warning light is the simplest sign that something is wrong in the system, and it should never be ignored.

Whether crash data, a connector or the control unit itself is the cause only shows when the fault memory is read out.

Which vehicles is the 77960-SWA-P614-M4 fitted in?

The control unit 77960-SWA-P614-M4 is used in these vehicles: Honda CR-V 3 RE (2006-2012).

The details are listed individually below.

• Honda CR-V 3 RE (2006-2012)

Comparing the part number on the label of the removed unit with this page only confirms that it is the correct unit. Have the fault memory read out before removal, as it shows whether the control unit is defective or a connector is the cause.

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-P614-M4 work?

First have the fault memory read out, then disconnect the battery. Only then remove the control unit 77960-SWA-P614-M4, create the repair order online and enclose the log. Inspection, repair and function test at Airbag24 usually take 3–4 working days.

Airbag24 inspects the unit on the test bench, replaces defective components and deletes the crash data. Finally a function test follows, after which your own unit is returned.

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-P614-M4 get to Airbag24?

A parcel takes the control unit 77960-SWA-P614-M4 to Airbag24, or you book a UPS collection for an extra charge. Airbag24 then sends your own unit back by UPS.

The printed repair order goes into the parcel; you pack the unit shock-proof.