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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 B1656: Seat Belt Buckle Switch (LH) [08/2019 - ] >> Description

DTC B1656: Seat Belt Buckle Switch (LH) [08/2019 - ]: Description

The seat belt buckle switch LH circuit consists of the airbag sensor assembly and front seat inner belt LH.

DTC B1656 is stored when a malfunction is detected in the seat belt buckle switch LH circuit.

DTC Code DTC Detection Condition Trouble Area
B1656 One of the following conditions is met:
  • The airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the seat belt buckle switch LH circuit for 2 seconds.
  • A front seat inner belt LH malfunction.
  • An airbag sensor assembly malfunction.
  • No. 2 floor wire
  • Front seat inner belt assembly LH (Seat belt buckle switch LH)
  • Airbag sensor assembly