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Home >> Toyota >> 2016 >> RAV4 Limited, FWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes & Circuit Tests) (Except 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 [12/2012 - ] >> 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 [12/2012 - ]: Description

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

This circuit instructs the SRS to deploy 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
B1900/73 Short in Front Pretensioner Squib RH Circuit One of the following conditions is met:
  • The airbag sensor assembly detects a line short circuit signal 5 times in the front pretensioner squib RH circuit during the primary check.
  • A front pretensioner squib RH malfunction.
  • An airbag sensor assembly malfunction.
  • Floor wire
  • Front seat outer belt assembly RH (Front pretensioner squib RH)
  • Airbag sensor assembly
B1901/73 Open in Front Pretensioner Squib RH Circuit One of the following conditions is met:
  • The airbag sensor assembly detects an open circuit signal in the front pretensioner squib RH circuit for 2 seconds.
  • A front pretensioner squib RH malfunction.
  • An airbag sensor assembly malfunction.
  • Floor wire
  • Front seat outer belt assembly RH (Front pretensioner squib RH)
  • Airbag sensor assembly
B1902/73 Short to GND in Front Pretensioner Squib RH Circuit One of the following conditions is met:
  • The airbag sensor assembly detects a short circuit to ground signal in the front pretensioner squib RH circuit for 0.5 seconds.
  • A front pretensioner squib RH malfunction.
  • An airbag sensor assembly malfunction.
  • Floor wire
  • Front seat outer belt assembly RH (Front pretensioner squib RH)
  • Airbag sensor assembly
B1903/73 Short to B+ in Front Pretensioner Squib RH Circuit One of the following conditions is met:
  • The airbag sensor assembly detects a short circuit to B+ signal in the front pretensioner squib RH circuit for 0.5 seconds.
  • A front pretensioner squib RH malfunction.
  • An airbag sensor assembly malfunction.
  • Floor wire
  • Front seat outer belt assembly RH (Front pretensioner squib RH)
  • Airbag sensor assembly
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