Airbag control unit with part number 77960-SFY-J113-M1

What does the airbag control unit 77960-SFY-J113-M1 do?

The airbag control unit 77960-SFY-J113-M1 is the central control unit of the restraint system (SRS) for Honda. It evaluates the sensor signals, determines within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system without interruption. It reports faults via the airbag warning light.

While driving, the unit works in the background and compares the measured values with stored limits. Triggering only takes place when an event is recognised as an accident.

After an accident, the control unit stores crash data and locks itself. That is why troubleshooting in the workshop starts with the fault memory.

Why does the control unit 77960-SFY-J113-M1 fail?

The most frequent case is stored crash data after an accident, even without an airbag being triggered; a standard diagnostic tool cannot remove it. Other causes are ageing electronics, cold solder joints, moisture and corrosion on plugs, and voltage spikes, for example from a weak battery or a jump start.

The data is stored regardless of whether an airbag was triggered. That is exactly why this point comes first in troubleshooting.

The other causes concern ageing, contact and the power supply. Electronic components wear out, solder joints can go cold, and moisture and corrosion attack plug connections. Voltage spikes arise, for example, from a weak battery or when starting with a jump start.

How can you tell that the 77960-SFY-J113-M1 is defective?

A defect shows up at the airbag warning light, in fault messages in the instrument cluster, in a lack of connection to the diagnostic tool, and in a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The signs in detail:

• Airbag warning light is on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool does not establish a connection to the control unit
• Fault memory cannot be cleared

The warning light reports the defect itself, so a prompt check is worthwhile.

Which vehicles is the 77960-SFY-J113-M1 fitted in?

The 77960-SFY-J113-M1 is fitted in these vehicles: Honda Inspire 4th generation (2003-2007). The reference point for assignment remains the part number, not the vehicle type alone.

The list of vehicles for this part number follows:

• Honda Inspire 4th generation (2003-2007)

Comparing the part number on the label of the removed unit is a first step. It confirms the right unit, but says nothing about its condition. Reading out the fault memory is just as important, because it shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 77960-SFY-J113-M1 work?

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

Airbag24 tests the unit on the test bench, replaces defective components and carries out a function test. Your own unit is then returned to you.

For safety reasons, this sequence applies without exception.

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-SFY-J113-M1 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. Return shipment after the repair is by UPS.

Put the printed repair order into the parcel. Pack the control unit shockproof so that it arrives safely.