Airbag control unit with part number 77960-SHJ-L014-M1

What does the airbag control unit 77960-SHJ-L014-M1 do?

The airbag control unit 77960-SHJ-L014-M1 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors, selects the appropriate airbags and seatbelt pretensioners within milliseconds in the event of an accident, and monitors the entire system. If it detects a fault, this appears on the airbag warning light; after an accident it stores crash data and locks itself.

Its task is to process signals before an accident happens and to check the system continuously, even when nothing is happening.

The protective effect of the system therefore depends directly on this device.

Why does the control unit 77960-SHJ-L014-M1 fail?

The most common cause on the 77960-SHJ-L014-M1 is crash data stored after an accident, even if no airbag was deployed; a normal diagnostic tool cannot erase them. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes come on top of this.

Crash data remain in the control unit afterwards and stand in the way of a diagnosis.

Aged components, cold solder joints and moisture at contacts are causes that make themselves felt gradually in everyday use. Voltage spikes put additional strain on the electronics, for example when the battery is weak.

How can you tell that the 77960-SHJ-L014-M1 is defective?

A fault on the 77960-SHJ-L014-M1 shows up on the airbag warning light, on an error message in the instrument cluster, on a missing connection to the diagnostic tool, or on a fault memory that cannot be cleared. In these cases the airbags and seatbelt pretensioners may not be able to deploy in an emergency.

In detail, you will notice these signs:

• the airbag warning light in the instrument cluster, which stays on permanently or intermittently
• an error message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• a fault memory that cannot be cleared

The warning light is the sign you are most likely to notice. A diagnostic tool without a connection does not necessarily mean the control unit is at fault, because wires or plugs can also be the cause.

Which vehicles is the 77960-SHJ-L014-M1 fitted in?

The control unit 77960-SHJ-L014-M1 is fitted in these vehicles: Honda Odyssey 4th generation (2008-2013).

The vehicles are listed here:

• Honda Odyssey 4th generation (2008-2013)

Comparing the part number on the label with this page confirms that you have removed the right unit. Whether the control unit is defective or whether a plug or cable is the cause is shown only by the fault memory, which you should have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 77960-SHJ-A013-M1, 77960-SHJA020M1, 77960-SHJC-012-M1, 77960-TK8-A011-M1.

How does the repair of the 77960-SHJ-L014-M1 work?

For the repair of the 77960-SHJ-L014-M1, have the fault memory read out first and attach the log. Then disconnect the battery and only then remove the control unit, before you create a repair order online and send the unit well packed. At Airbag24, checking, repairing and testing usually take 3–4 working days.

Airbag24 checks the unit you sent in, repairs defective components and carries out a function test.

Afterwards 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-SHJ-L014-M1 get to Airbag24?

You send the control unit 77960-SHJ-L014-M1 as a parcel or arrange a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order in the parcel and pack the unit shock-proof.