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Home >> Lexus >> 2013 >> ES 350 >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes (B1650/32 - B1928/78) & Symptom Tests)) >> Airbag System >> DTC B1925/78: Short in Rear Pretensioner Squib LH Circuit; DTC B1926/78: Open in Rear Pretensioner Squib LH Circuit; DTC B1927/78: Short to GND in Rear Pretensioner Squib LH Circuit; DTC B1928/78: Short to B+ in Rear Pretensioner Squib LH Circuit >> Description

DTC B1925/78: Short in Rear Pretensioner Squib LH Circuit; DTC B1926/78: Open in Rear Pretensioner Squib LH Circuit; DTC B1927/78: Short to GND in Rear Pretensioner Squib LH Circuit; DTC B1928/78: Short to B+ in Rear Pretensioner Squib LH Circuit: Description

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

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

These DTCs are stored when a malfunction is detected in the rear pretensioner squib LH circuit.

DTC No. DTC Detection Condition Trouble Area
B1925/78
  • The airbag sensor assembly receives a line short circuit signal in the rear pretensioner squib LH circuit during primary check.
  • Rear pretensioner squib LH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Rear seat 3 point type outer belt assembly LH (Rear pretensioner squib LH)
  • Airbag sensor assembly
B1926/78
  • The airbag sensor assembly receives an open circuit signal in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag sensor assembly malfunction
B1927/78
  • The airbag sensor assembly receives a short circuit to ground signal in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag sensor assembly malfunction
B1928/78
  • The airbag sensor assembly receives a short circuit to B+ signal in the rear pretensioner squib LH circuit.
  • Rear pretensioner squib LH malfunction
  • Airbag sensor assembly malfunction