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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (6 Of 7) >> Airbag System >> DTC B1656: Seat Belt Buckle Switch (LH) [12/2019 - 11/2023] >> Description

DTC B1656: Seat Belt Buckle Switch (LH) [12/2019 - 11/2023]: Description

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

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

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1656 Seat Belt Buckle Switch (LH)
  • The airbag sensor assembly detects a line short, short to ground or B+, or an open in the front seat belt buckle switch LH circuit.
  • Front seat belt buckle switch LH malfunction
  • Airbag sensor assembly malfunction
  • No. 2 floor wire
  • Front seat belt buckle switch LH (Front seat inner belt assembly LH)
  • Airbag sensor assembly
Comes on Does not apply to test/check mode