Airbag control unit with part number 89170-B1170

What does the airbag control unit 89170-B1170 do?

The airbag control unit 89170-B1170 forms the central control unit of the restraint system (SRS) for Daihatsu. It checks the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners deploy.

The unit monitors the entire system continuously and reports faults via the airbag warning light. After an accident, it stores crash data and locks itself.

The lock is lifted only by the repair.

Why does the control unit 89170-B1170 fail?

For the 89170-B1170, the most common cause after an accident is stored crash data, even if no airbag has deployed. Other causes are aged components, moisture at plug connections and voltage spikes.

A standard diagnostic tool cannot remove this data. Airbag24 erases it during the repair.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example with a weak battery or a jump start

Which cause applies can only be narrowed down by an examination.

How can you tell that the 89170-B1170 is defective?

On the 89170-B1170, a defect shows itself through warning signals in the instrument cluster. The airbag warning light lights up permanently or intermittently, and a fault message appears in the instrument cluster.

In addition, there is a diagnostic tool that cannot establish a connection to the control unit, and a fault memory that cannot be cleared. A defect may possibly prevent airbags and seatbelt pretensioners from deploying in an emergency.

Do not wait if the warning light comes on; have the finding clarified promptly.

Which vehicles is the 89170-B1170 fitted in?

The airbag control unit 89170-B1170 is fitted in these vehicles: Daihatsu Boon M600 (2010-2016); Daihatsu Sirion M600 (from 2011).

Our assignment lists the following vehicles for this part number:

• Daihatsu Boon M600 (2010-2016)
• Daihatsu Sirion M600 (from 2011)

Compare the part number on the label of the removed unit with this page so that you can be sure you have the correct unit in front of you. Have the fault memory read out beforehand. Only this record clarifies whether the control unit itself is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-87410, 89170-B1030, 89170-B2040, 89170-B2060.

How does the repair of the 89170-B1170 work?

First, have the fault memory of the 89170-B1170 read out and enclose the log. Then disconnect the battery and only afterwards remove the unit. Then create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench and replaces defective components. The stored crash data is deleted, followed by a function test. Afterwards, the unit goes back to you.

Processing at Airbag24 usually takes 3–4 working days. This time applies only to checking, repairing and testing.

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-B1170 get to Airbag24?

The 89170-B1170 goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

The printed repair order goes into the parcel, and the unit needs shock-proof packaging.