LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2021 >> Avalon Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 158 (Supplemental Restraint System - Diagnostic Codes (B1656-U0154) & Symptom Tests (Hybrid)) >> AIRBAG SYSTEM (for HV Model) >> DTC B1900: Short in P/T Squib (RH) Circuit; DTC B1901: Open in P/T Squib (RH) Circuit; DTC B1902: Short in P/T Squib (RH) Circuit (to Ground); DTC B1903: Short in P/T Squib (RH) Circuit (to +B) [04/2018 -] >> Description

DTC B1900: Short in P/T Squib (RH) Circuit; DTC B1901: Open in P/T Squib (RH) Circuit; DTC B1902: Short in P/T Squib (RH) Circuit (to Ground); DTC B1903: Short in P/T Squib (RH) Circuit (to +B) [04/2018 -]: Description

WARNING: This page is about a different variant/trim than selected.

The front pretensioner squib RH circuit consists of the airbag ECU assembly and front seat outer belt assembly RH.

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

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

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1900 Short in P/T Squib (RH) Circuit
  • The airbag ECU assembly detects a line short in the front pretensioner squib RH circuit during the primary check.
  • Front pretensioner squib RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front pretensioner squib RH (Front seat outer belt assembly RH)
  • Airbag ECU assembly
Comes on Applies to check mode
B1901 Open in P/T Squib (RH) Circuit
  • The airbag ECU assembly detects an open in the front pretensioner squib RH circuit.
  • Front pretensioner squib RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front pretensioner squib RH (Front seat outer belt assembly RH)
  • Airbag ECU assembly
Comes on Applies to check mode
B1902 Short in P/T Squib (RH) Circuit (to Ground)
  • The airbag ECU assembly detects a short to ground in the front pretensioner squib RH circuit.
  • Front pretensioner squib RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front pretensioner squib RH (Front seat outer belt assembly RH)
  • Airbag ECU assembly
Comes on Applies to check mode
B1903 Short in P/T Squib (RH) Circuit (to +B)
  • The airbag ECU assembly detects a short to B+ in the front pretensioner squib RH circuit.
  • Front pretensioner squib RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front pretensioner squib RH (Front seat outer belt assembly RH)
  • Airbag ECU assembly
Comes on Applies to check mode