Airbag control unit with part number 89170-B1330

What does the airbag control unit 89170-B1330 do?

The airbag control unit 89170-B1330 is the central control unit of the restraint system (SRS) in vehicles from Daihatsu. It checks the crash sensors and the wiring continuously and, in a crash, decides which airbags and seatbelt pretensioners are triggered.

If the system reports a fault, the airbag warning light in the instrument cluster comes on. The evaluation of the sensor data runs in the background, and you initially notice nothing of it.

After a crash the unit stores crash data and then remains locked.

Why does the control unit 89170-B1330 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; an ordinary diagnostic tool cannot erase it. Other causes include ageing components, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

Crash data stays in the memory until it is cleared during the repair. Airbag24 does exactly that.

Electronic components age, and solder joints can go cold over time. Moisture and corrosion at plug connectors lead to contact problems.

Voltage spikes, for example from a weak battery or jump-starting, put additional strain on the electronics. Only the fault memory shows which cause applies.

How can you tell that the 89170-B1330 is defective?

A defect shows through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. In addition there are error messages in the instrument cluster, a diagnostic tool without connection to the control unit, and a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

The warning light is the sign you notice first in everyday use. It shows the defect, so when a message appears, it is worth having the fault memory checked promptly.

If the message cannot be reset, contact a workshop with a diagnostic tool so that the fault memory can be read out.

Which vehicles is the 89170-B1330 fitted in?

The assignment concerns Daihatsu. The control unit 89170-B1330 is fitted in these vehicles: Daihatsu Boon M700 (2016-2023).

The vehicles at a glance:

• Daihatsu Boon M700 (2016-2023)

Compare the part number on the label of the removed unit with this page first. That only confirms that you have the correct unit. Also have the fault memory read out before you remove anything. Only the log shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 89170-B1330 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Online you create a repair order, and the unit goes off well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the team checks the unit on the test bench and renews defective components. Stored crash data is erased, then a function test follows, and your own 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-B1330 get to Airbag24?

Send the unit to Airbag24 as a parcel, or book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair.

Place the printed repair order in the parcel, and pack the unit shock-resistant.