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Home >> Toyota >> 2021 >> 4Runner Trail, 4WD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (B100-B1690) >> Airbag System >> DTC B1000: Airbag ECU Malfunction [08/2019 - ] >> Description

DTC B1000: Airbag ECU Malfunction [08/2019 - ]: Description

The airbag sensor assembly consists of a deceleration sensor, safing sensor, drive circuit, diagnosis circuit, ignition control, etc.

If the airbag sensor assembly receives signals from the deceleration sensor, it determines whether or not the SRS should be activated.

DTC B1000 is recorded when a malfunction is detected in the airbag sensor assembly.

DTC Code DTC Detection Condition Trouble Area
B1000 Airbag sensor assembly malfunction. Airbag sensor assembly