89170-42330 — airbag ECU crash data reset
Airbag control unit fitted to the Toyota RAV4, built by Denso with 93C66 memory. Upload the dump you read from the module and download it back with the crash data removed.
| Part number | 89170-42330 |
|---|---|
| Vehicle | Toyota RAV4 |
| Module manufacturer | Denso |
| Memory / MCU | 93C66 |
| Dump size | 512 bytes — from a dump we have processed |
| Method | Crash data cleared from the memory dump |
| Price | 20 tokens (from 14.29 € per reset) |
Verified module. We have already processed this module type and hold a reference pattern for it, so the reset is done straight away.
Reading the 93C66 EEPROM
The crash data of this module is stored in a 93C66 serial EEPROM (Microwire bus, usually an 8-pin package). A complete dump of this chip is exactly 512 bytes. If your file is a different size, the read is incomplete or a different chip was read.
93C-series EEPROMs can be organised in 8-bit or 16-bit words. Use the same setting for every read so that your two reads match.
Read it in-circuit with a clip or with the chip removed, make two reads and compare them before you upload, and keep the original file as your backup.
How the reset works for this module
- Read the 93C66 memory of the 89170-42330 module with your programmer and save the dump.
- Upload that file here and enter the part number 89170-42330.
- We remove the crash record and return the repaired file, usually within minutes.
- Write the file back to the module and clear the fault codes.
Before you fit it back: clearing crash data does not repair the car. Deployed airbags, used pretensioners and damaged sensors must be replaced and the system checked fault-free before the vehicle goes back on the road.
No programmer? You can also send us the module. More answers in the FAQ.