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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (7 Of 7) & Symptom Tests >> Airbag System >> DTC B1820: Short in Side Squib (RH) Circuit; DTC B1821: Open in Side Squib (RH) Circuit; DTC B1822: Short in Side Squib (RH) Circuit (to Ground); DTC B1823: Short in Side Squib (RH) Circuit (to +B) [12/2019 - 11/2023] >> Description

DTC B1820: Short in Side Squib (RH) Circuit; DTC B1821: Open in Side Squib (RH) Circuit; DTC B1822: Short in Side Squib (RH) Circuit (to Ground); DTC B1823: Short in Side Squib (RH) Circuit (to +B) [12/2019 - 11/2023]: Description

The front side squib RH circuit consists of the airbag sensor assembly and front seat airbag assembly RH.

The airbag sensor assembly uses this circuit to deploy the airbag when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front side squib RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1820 Short in Side Squib (RH) Circuit
  • The airbag sensor assembly detects a line short in the front side squib RH circuit during the primary check.
  • Front side squib RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front side squib RH (Front seat airbag assembly RH)
  • Airbag sensor assembly
 Comes on Applies to check mode
B1821 Open in Side Squib (RH) Circuit
  • The airbag sensor assembly detects an open in the front side squib RH circuit.
  • Front side squib RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front side squib RH (Front seat airbag assembly RH)
  • Airbag sensor assembly
 Comes on Applies to check mode
B1822 Short in Side Squib (RH) Circuit (to Ground)
  • The airbag sensor assembly detects a short to ground in the front side squib RH circuit.
  • Front side squib RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front side squib RH (Front seat airbag assembly RH)
  • Airbag sensor assembly
 Comes on Applies to check mode
B1823 Short in Side Squib (RH) Circuit (to +B)
  • The airbag sensor assembly detects a short to B+ in the front side squib RH circuit.
  • Front side squib RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front side squib RH (Front seat airbag assembly RH)
  • Airbag sensor assembly
 Comes on Applies to check mode
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