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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (3 Of 3) & 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) [08/2017 - 08/2019] >> 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) [08/2017 - 08/2019]: Description

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

This circuit instructs the SRS to deploy 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 One of the following conditions is met:
  • The airbag sensor assembly detects a line short circuit signal 5 times in the front side squib RH circuit during the primary check.
  • A front seat airbag assembly RH malfunction.
  • An airbag sensor assembly malfunction.
  • No. 2 floor wire
  • Front seat airbag assembly RH
  • Airbag sensor assembly
 Comes on Applicable
B1821 Open in Side Squib (RH) Circuit One of the following conditions is met:
  • The airbag sensor assembly detects an open circuit signal in the front side squib RH circuit for 2 seconds.
  • A front seat airbag assembly RH malfunction.
  • An airbag sensor assembly malfunction.
  • No. 2 floor wire
  • Front seat airbag assembly RH
  • Airbag sensor assembly
 Comes on Applicable
B1822 Short in Side Squib (RH) Circuit (to Ground) One of the following conditions is met:
  • The airbag sensor assembly detects a short circuit to ground signal in the front side squib RH circuit for 0.5 seconds.
  • A front seat airbag assembly RH malfunction.
  • An airbag sensor assembly malfunction.
  • No. 2 floor wire
  • Front seat airbag assembly RH
  • Airbag sensor assembly
 Comes on Applicable
B1823 Short in Side Squib (RH) Circuit (to +B) One of the following conditions is met:
  • The airbag sensor assembly detects a short circuit to B+ signal in the front side squib RH circuit for 0.5 seconds.
  • A front seat airbag assembly RH malfunction.
  • An airbag sensor assembly malfunction.
  • No. 2 floor wire
  • Front seat airbag assembly RH
  • Airbag sensor assembly
 Comes on Applicable
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