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Home >> Toyota >> 2020 >> Prius Limited >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (5 Of 5) & Symptom Tests >> Airbag System >> DTC B1875: Short in Passenger Side Front Seat Cushion Squib Circuit; DTC B1876: Open in Passenger Side Front Seat Cushion Squib Circuit; DTC B1877: Short to GND in Passenger Side Front Seat Cushion Squib Circuit; DTC B1878: Short to B+ in Passenger Side Front Seat Cushion Squib Circuit [12/2018 - 08/2019] >> Description

DTC B1875: Short in Passenger Side Front Seat Cushion Squib Circuit; DTC B1876: Open in Passenger Side Front Seat Cushion Squib Circuit; DTC B1877: Short to GND in Passenger Side Front Seat Cushion Squib Circuit; DTC B1878: Short to B+ in Passenger Side Front Seat Cushion Squib Circuit [12/2018 - 08/2019]: Description

The passenger side front seat cushion squib circuit consists of the airbag ECU assembly and front seat cushion airbag assembly RH.

The airbag ECU assembly uses this circuit to deploy the airbag when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the passenger side front seat cushion squib circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1875 Short in Passenger Side Front Seat Cushion Squib Circuit
  • The airbag ECU assembly detects a line short in the passenger side front seat cushion squib circuit during the primary check.
  • Passenger side front seat cushion squib malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Passenger side front seat cushion squib (Front seat cushion airbag assembly RH)
  • Airbag ECU assembly
 Applies to check mode
B1876 Open in Passenger Side Front Seat Cushion Squib Circuit
  • The airbag ECU assembly detects an open in the passenger side front seat cushion squib circuit.
  • Passenger side front seat cushion squib malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Passenger side front seat cushion squib (Front seat cushion airbag assembly RH)
  • Airbag ECU assembly
 Applies to check mode
B1877 Short to GND in Passenger Side Front Seat Cushion Squib Circuit
  • The airbag ECU assembly detects a short to ground in the passenger side front seat cushion squib circuit.
  • Passenger side front seat cushion squib malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Passenger side front seat cushion squib (Front seat cushion airbag assembly RH)
  • Airbag ECU assembly
 Applies to check mode
B1878 Short to B+ in Passenger Side Front Seat Cushion Squib Circuit
  • The airbag ECU assembly detects a short to B+ in the passenger side front seat cushion squib circuit.
  • Passenger side front seat cushion squib malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Passenger side front seat cushion squib (Front seat cushion airbag assembly RH)
  • Airbag ECU assembly
 Applies to check mode
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