Airbag control unit with part number 89170-26220

What does the airbag control unit 89170-26220 do?

The airbag control unit 89170-26220 forms the central control unit of the restraint system (SRS) for Toyota. It continuously checks the signals of the crash sensors and decides in a crash, within milliseconds, which airbags and seatbelt pretensioners are triggered.

The unit monitors the entire system permanently. If it detects a fault, it shows this via the airbag warning light in the instrument cluster.

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

Why does the control unit 89170-26220 fail?

The most common cause of a failure of the control unit 89170-26220 is crash data stored after an accident, even when no airbag has triggered. Further causes are aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes.

Crash data remains stored in the memory after an accident. A normal diagnostic tool cannot erase it; during the repair Airbag24 removes it.

The other causes lie in the electronics. Components age, solder joints can be cold, and moisture with corrosion attacks plug connectors.

Voltage spikes occur, for example, with a weak battery or when jump-starting.

How can you tell that the 89170-26220 is defective?

The airbag warning light lights up permanently or intermittently on a defective 89170-26220. Additional signs are a fault message, a diagnostic tool without connection to the control unit, and a fault memory that cannot be cleared.

• Airbag warning light in the instrument cluster lights up permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool gets no connection to the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then not trigger. Therefore have such signs checked promptly.

Which vehicles is the 89170-26220 fitted in?

The control unit 89170-26220 is fitted in these vehicles: Toyota HiAce H200 (from 2004).

The models for which this part number is stored are listed here:

• Toyota HiAce H200 (from 2004)

Compare the part number on the label of the removed unit with this page. That only ensures that it is the correct unit. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-48830, 89170-48880, 89170-52P20.

How does the repair of the 89170-26220 work?

First have the fault memory read out and attach the log. Then disconnect the battery; only then remove the 89170-26220. Next, create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards the unit goes back 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 89170-26220 get to Airbag24?

You send the control unit 89170-26220 as a parcel or book a UPS collection for an extra charge. Airbag24 sends it back to you by UPS after the repair.

Pack the unit shock-proof and put the printed repair order into the parcel.