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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes & Vehicle Control History (Hybrid) >> Airbag System >> DTC B1900/73: Short in Front Pretensioner Squib RH Circuit; DTC B1901/73: Open in Front Pretensioner Squib RH Circuit; DTC B1902/73: Short to GND in Front Pretensioner Squib RH Circuit; DTC B1903/73: Short to B+ in Front Pretensioner Squib RH Circuit [02/2014 - ] >> Description

DTC B1900/73: Short in Front Pretensioner Squib RH Circuit; DTC B1901/73: Open in Front Pretensioner Squib RH Circuit; DTC B1902/73: Short to GND in Front Pretensioner Squib RH Circuit; DTC B1903/73: Short to B+ in Front Pretensioner Squib RH Circuit [02/2014 - ]: Description

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

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 front pretensioner squib RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1900/73 Short in Front Pretensioner Squib RH Circuit
  • The airbag sensor assembly detects a line short in the front pretensioner squib RH circuit during primary check.
  • Front pretensioner squib RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front pretensioner squib RH (Front seat outer belt assembly RH)
  • Airbag sensor assembly
Applies to check mode
B1901/73 Open in Front Pretensioner Squib RH Circuit
  • The airbag sensor assembly detects an open in the front pretensioner squib RH circuit.
  • Front pretensioner squib RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front pretensioner squib RH (Front seat outer belt assembly RH)
  • Airbag sensor assembly
Applies to check mode
B1902/73 Short to GND in Front Pretensioner Squib RH Circuit
  • The airbag sensor assembly detects a short to ground in the front pretensioner squib RH circuit.
  • Front pretensioner squib RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front pretensioner squib RH (Front seat outer belt assembly RH)
  • Airbag sensor assembly
Applies to check mode
B1903/73 Short to B+ in Front Pretensioner Squib RH Circuit
  • The airbag sensor assembly detects a short to B+ in the front pretensioner squib RH circuit.
  • Front pretensioner squib RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front pretensioner squib RH (Front seat outer belt assembly RH)
  • Airbag sensor assembly
Applies to check mode