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Home >> Lexus >> 2022 >> ES 250 Base >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (Except Hybrid) - Diagnostic Codes (3 Of 3) & Symptom Tests >> AIRBAG SYSTEM (for Gasoline 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) [06/2018 - ] >> 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) [06/2018 - ]: Description

The rear pretensioner squib LH circuit consists of the airbag ECU assembly and rear seat outer 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 outer 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 outer 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 outer 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 outer belt assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
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