If DTC B1646 is stored, diagnose the CAN bus lines.
When replacing the ECU, always check that the communication circuit is normal.
DIAGNOSTIC FUNCTION
If the vehicle information data is not registered to the combination meter, the SRS-ECU stores DTC B1646.
JUDGMENT CRITERIA
With the global coding counter value "0," if all the global coding data (vehicle information) are not stored, the SRS-ECU determines that a problem has occurred.
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