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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 B1925: Short in Rear P/T Squib (LH) Circuit; DTC B1926: Open in Rear P/T Squib (LH) Circuit; DTC B1927: Short in Rear P/T Squib (LH) Circuit (to Ground); DTC B1928: Short in Rear P/T Squib (LH) Circuit (to +B) [04/2018 -] >> Description

DTC B1925: Short in Rear P/T Squib (LH) Circuit; DTC B1926: Open in Rear P/T Squib (LH) Circuit; DTC B1927: Short in Rear P/T Squib (LH) Circuit (to Ground); DTC B1928: Short in Rear P/T Squib (LH) Circuit (to +B) [04/2018 -]: Description

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

The rear pretensioner squib LH circuit consists of the airbag ECU assembly and rear seat 3 point type belt assembly LH.

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 rear pretensioner squib LH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1925 Short in Rear P/T Squib (LH) Circuit
  • The airbag ECU assembly detects a line short in the rear pretensioner squib LH circuit during the primary check.
  • Rear pretensioner squib LH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Rear pretensioner squib LH (Rear seat 3 point type belt assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
B1926 Open in Rear P/T Squib (LH) Circuit
  • The airbag ECU assembly detects an open in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Rear pretensioner squib LH (Rear seat 3 point type belt assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
B1927 Short in Rear P/T Squib (LH) Circuit (to Ground)
  • The airbag ECU assembly detects a short to ground in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Rear pretensioner squib LH (Rear seat 3 point type belt assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
B1928 Short in Rear P/T Squib (LH) Circuit (to +B)
  • The airbag ECU assembly detects a short to B+ in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Rear pretensioner squib LH (Rear seat 3 point type belt assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
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