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Home >> Lexus >> 2021 >> LS 500h RWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (W/O Advanced Park) - Diagnostic Codes (3 Of 3) >> AIRBAG SYSTEM (w/o Advanced Park) >> DTC B1880: Short in Rear Seat Cushion Squib RH Circuit; DTC B1881: Open in Rear Seat Cushion Squib RH Circuit; DTC B1882: Short to GND in Rear Seat Cushion Squib RH Circuit; DTC B1883: Short to B+ in Rear Seat Cushion Squib RH Circuit [10/2020 - 10/2023] >> Description

DTC B1880: Short in Rear Seat Cushion Squib RH Circuit; DTC B1881: Open in Rear Seat Cushion Squib RH Circuit; DTC B1882: Short to GND in Rear Seat Cushion Squib RH Circuit; DTC B1883: Short to B+ in Rear Seat Cushion Squib RH Circuit [10/2020 - 10/2023]: Description

The rear seat cushion squib RH circuit consists of the airbag ECU assembly and rear seat cushion airbag assembly RH.

The circuit instructs the SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the rear seat cushion squib RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1880 Short in Rear Seat Cushion Squib RH Circuit One of the following conditions is met:
  • The airbag ECU assembly detects a line short circuit signal 5 times in the rear seat cushion squib RH circuit during the primary check.
  • A rear seat cushion airbag assembly RH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Rear seat wire RH
  • Rear seat cushion airbag assembly RH
  • Airbag ECU assembly
Comes on Applicable
B1881 Open in Rear Seat Cushion Squib RH Circuit One of the following conditions is met:
  • The airbag ECU assembly detects an open circuit signal in the rear seat cushion squib RH circuit for 2 seconds.
  • A rear seat cushion airbag assembly RH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Rear seat wire RH
  • Rear seat cushion airbag assembly RH
  • Airbag ECU assembly
Comes on Applicable
B1882 Short to GND in Rear Seat Cushion Squib RH Circuit One of the following conditions is met:
  • The airbag ECU assembly detects a short circuit to ground signal in the rear seat cushion squib RH circuit for 0.5 seconds.
  • A rear seat cushion airbag assembly RH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Rear seat wire RH
  • Rear seat cushion airbag assembly RH
  • Airbag ECU assembly
Comes on Applicable
B1883 Short to B+ in Rear Seat Cushion Squib RH Circuit One of the following conditions is met:
  • The airbag ECU assembly detects a short circuit to B+ signal in the rear seat cushion squib RH circuit for 0.5 seconds.
  • A rear seat cushion airbag assembly RH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Rear seat wire RH
  • Rear seat cushion airbag assembly RH
  • Airbag ECU assembly
Comes on Applicable