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Home >> Scion >> 2014 >> iQ EV >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes B1693/81 - B1907/74 & Symptom Tests) (Electric) >> Airbag System >> DTC B1875/67: Short in Passenger Side Front Seat Cushion Squib Circuit; DTC B1876/67: Open in Passenger Side Front Seat Cushion Squib Circuit; DTC B1877/67: Short to GND in Passenger Side Front Seat Cushion Squib Circuit; DTC B1878/67: Short to B+ in Passenger Side Front Seat Cushion Squib Circuit >> Description

DTC B1875/67: Short in Passenger Side Front Seat Cushion Squib Circuit; DTC B1876/67: Open in Passenger Side Front Seat Cushion Squib Circuit; DTC B1877/67: Short to GND in Passenger Side Front Seat Cushion Squib Circuit; DTC B1878/67: Short to B+ in Passenger Side Front Seat Cushion Squib Circuit: Description

The seat cushion squib circuit consists of the airbag ECU assembly and the front seat airbag sub-assembly RH.

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

These DTCs are recorded when a malfunction is detected in the seat cushion squib circuit.

DTC No. DTC Detection Condition Trouble Area
B1875/67
  • The airbag ECU assembly receives a line short circuit signal 5 times in the seat cushion squib circuit during primary check.
  • Seat cushion squib malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front seat airbag sub-assembly RH (Seat cushion squib RH)
  • Airbag ECU assembly
B1876/67
  • The airbag ECU assembly receives an open circuit signal in the seat cushion squib circuit for 2 seconds.
  • Seat cushion squib malfunction
  • Airbag ECU assembly malfunction
B1877/67
  • The airbag ECU assembly receives a short circuit to ground signal in the seat cushion squib circuit for 0.5 seconds.
  • Seat cushion squib malfunction
  • Airbag ECU assembly malfunction
B1878/67
  • The airbag ECU assembly receives a short circuit to B+ signal in the seat cushion squib circuit for 0.5 seconds.
  • Seat cushion squib malfunction
  • Airbag ECU assembly malfunction