Airbag control unit with part number 77960-SZT-L030-M2

What does the airbag control unit 77960-SZT-L030-M2 do?

The airbag control unit 77960-SZT-L030-M2 coordinates the restraint system (SRS) in Honda. It evaluates the crash sensors and, in an accident, calculates within milliseconds the triggering of airbags and seatbelt pretensioners. After an accident, it stores crash data and locks itself.

The unit reports faults in the system via the airbag warning light in the instrument cluster, so that the driver can recognise them.

Only the repair lifts the lock.

Why does the control unit 77960-SZT-L030-M2 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Other causes are ageing components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

• Ageing electronic components
• Cold solder joints
• Moisture and corrosion at plug connectors
• Voltage spikes, for example from a weak battery or jump-starting

Which cause applies in an individual case is shown only by the test on the test bench.

How can you tell that the 77960-SZT-L030-M2 is defective?

A defect shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently, and as a fault message in the instrument cluster. The diagnostic tool then finds no connection to the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may not trigger as a result. Such a problem does not stay hidden, because the warning light displays it.

Whoever sees the light should have the system checked promptly.

Which vehicles is the 77960-SZT-L030-M2 fitted in?

The 77960-SZT-L030-M2 is fitted in these vehicles: Honda CR-Z ZF1 (2010-2016).

The vehicles for which this unit is intended are listed here:

• Honda CR-Z ZF1 (2010-2016)

Compare the part number on the label of the removed unit with this page, so that you have the right unit. The fault memory is also read out beforehand, because only this log shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-SZT-A011, 77960-SZT-A011-M2.

How does the repair of the 77960-SZT-L030-M2 work?

For the repair of the 77960-SZT-L030-M2, first have the fault memory read out and enclose the log. Then disconnect the battery. Only afterwards remove the control unit, create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards, your own unit goes back to you.

Processing at Airbag24 usually takes 3–4 working days.

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-SZT-L030-M2 get to Airbag24?

You send the control unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

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