Airbag control unit with part number 77960-SHJ-C022-M1

What does the airbag control unit 77960-SHJ-C022-M1 do?

The airbag control unit 77960-SHJ-C022-M1 is the central control unit of the restraint system (SRS) for Honda. It evaluates the crash sensors, decides in an accident within milliseconds about the airbags and seatbelt pretensioners, and monitors the entire system.

The unit reports faults via the airbag warning light. Monitoring runs throughout the whole journey.

After an accident the unit stores crash data and locks itself.

Why does the control unit 77960-SHJ-C022-M1 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes are listed below.

Other causes at a glance:

• aged electronic components
• cold solder joints
• moisture and corrosion on plug connectors
• voltage spikes, for example from a weak battery or a jump start

Airbag24 erases the crash data during the repair. Which cause applies in an individual case only becomes clear when the unit is examined.

How can you tell that the 77960-SHJ-C022-M1 is defective?

A defect shows when the airbag warning light comes on, a fault message appears, or the diagnostic tool cannot establish a connection. A fault memory that cannot be cleared also counts. In an emergency, airbags and seatbelt pretensioners may then not trigger.

• Airbag warning light stays on permanently or intermittently
• Fault message in the instrument cluster
• No connection between diagnostic tool and control unit
• Fault memory cannot be cleared

If any of these signs appear, have the vehicle checked promptly.

Which vehicles is the 77960-SHJ-C022-M1 fitted in?

The assignment for this part number comes from the data on hand. The control unit 77960-SHJ-C022-M1 is fitted in these vehicles: Honda Odyssey 4th generation (2008-2013).

The list names the vehicles that are on record for this part number.

• Honda Odyssey 4th generation (2008-2013)

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. Having the fault memory read out shows whether the control unit is defective or whether a plug or a cable is the cause.

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-C022-M1 work?

First have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit and create a repair order online. Processing at Airbag24 usually takes 3–4 working days: the unit is checked on the test bench, defective components are replaced, the crash data is erased and a function test is run.

The order is a matter of safety: the control unit is removed only once the battery has been disconnected. Then pack it well.

Only send the unit once the repair order has been created online.

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-C022-M1 get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends the repaired unit back by UPS.

The printed repair order goes into the parcel, and the control unit is packed shockproof.