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Home >> Lexus >> 2022 >> RX 450hL >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (Diagnostic Codes) (5 Of 5) & Symptom Tests) >> Airbag System >> 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) [08/2019 - ] >> 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) [08/2019 - ]: Description

The rear pretensioner squib LH circuit consists of the airbag sensor assembly and rear No. 1 seat outer belt assembly LH.

The airbag sensor 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 sensor assembly detects a line short in the rear pretensioner squib LH circuit during the primary check.
  • Rear pretensioner squib LH malfunction
  • Airbag sensor assembly malfunction
  • No. 2 floor wire
  • Rear pretensioner squib LH (Rear No. 1 seat outer belt assembly LH)
  • Airbag sensor assembly
 Comes on Applies to check mode
B1926 Open in Rear P/T Squib (LH) Circuit
  • The airbag sensor assembly detects an open in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag sensor assembly malfunction
  • No. 2 floor wire
  • Rear pretensioner squib LH (Rear No. 1 seat outer belt assembly LH)
  • Airbag sensor assembly
 Comes on Applies to check mode
B1927 Short in Rear P/T Squib (LH) Circuit (to Ground)
  • The airbag sensor assembly detects a short to ground in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag sensor assembly malfunction
  • No. 2 floor wire
  • Rear pretensioner squib LH (Rear No. 1 seat outer belt assembly LH)
  • Airbag sensor assembly
 Comes on Applies to check mode
B1928 Short in Rear P/T Squib (LH) Circuit (to +B)
  • The airbag sensor assembly detects a short to B+ in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag sensor assembly malfunction
  • No. 2 floor wire
  • Rear pretensioner squib LH (Rear No. 1 seat outer belt assembly LH)
  • Airbag sensor assembly
 Comes on Applies to check mode
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