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Home >> Toyota >> 2018 >> Prius Four >> Repair and Diagnosis >> External Pages >> Different car >> Section 268 (Supplemental Restraint System - Diagnostic Codes (B1660-U0154) & Symptom Tests (Except Hybrid)) >> AIRBAG SYSTEM (for Gasoline Model) >> 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) [04/2018 -] >> 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) [04/2018 -]: Description

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

The airbag ECU 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 ECU assembly detects a line short in the front side squib RH circuit during the primary check.
  • Front side squib RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front side squib RH (Front seat airbag assembly RH)
  • Airbag ECU assembly
Comes on Applies to check mode
B1821 Open in Side Squib (RH) Circuit
  • The airbag ECU assembly detects an open in the front side squib RH circuit.
  • Front side squib RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front side squib RH (Front seat airbag assembly RH)
  • Airbag ECU assembly
Comes on Applies to check mode
B1822 Short in Side Squib (RH) Circuit (to Ground)
  • The airbag ECU assembly detects a short to ground in the front side squib RH circuit.
  • Front side squib RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front side squib RH (Front seat airbag assembly RH)
  • Airbag ECU assembly
Comes on Applies to check mode
B1823 Short in Side Squib (RH) Circuit (to +B)
  • The airbag ECU assembly detects a short to B+ in the front side squib RH circuit.
  • Front side squib RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front side squib RH (Front seat airbag assembly RH)
  • Airbag ECU assembly
Comes on Applies to check mode