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Home >> Lexus >> 2014 >> GS 450h >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes (B1692/81-B1928/78) & Symptom Tests)) >> Airbag System >> DTC B1865/65, B1866/65, B1867/65, B1868/65: Short in Front Passenger Side Knee Airbag Squib Circuit; Open in Front Passenger Side Knee Airbag Squib Circuit; Short to GND in Front Passenger Side Knee Airbag Squib Circuit; Short to B+ in Front Passenger Side Knee Airbag Squib Circuit [09/2013 - ] >> Description

DTC B1865/65, B1866/65, B1867/65, B1868/65: Short in Front Passenger Side Knee Airbag Squib Circuit; Open in Front Passenger Side Knee Airbag Squib Circuit; Short to GND in Front Passenger Side Knee Airbag Squib Circuit; Short to B+ in Front Passenger Side Knee Airbag Squib Circuit [09/2013 - ]: Description

The front passenger side knee squib circuit consists of the center airbag sensor assembly and lower No. 2 instrument panel airbag assembly.

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

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

DTC Code DTC Detection Condition Trouble Area
B1865/65 One of the following conditions is met:
  • The center airbag sensor assembly detects a line short circuit signal 5 times in the front passenger side knee squib circuit during the primary check.
  • A front passenger side knee squib malfunction.
  • A center airbag sensor assembly malfunction.
  • Instrument panel wire
  • Lower No. 2 instrument panel airbag assembly (Front passenger side knee squib)
  • Center airbag sensor assembly
B1866/65 One of the following conditions is met:
  • The center airbag sensor assembly detects an open circuit signal in the front passenger side knee squib circuit for 2 seconds.
  • A front passenger side knee squib malfunction.
  • A center airbag sensor assembly malfunction.
B1867/65 One of the following conditions is met:
  • The center airbag sensor assembly detects a short circuit to ground signal in the front passenger side knee squib circuit for 0.5 seconds.
  • A front passenger side knee squib malfunction.
  • A center airbag sensor assembly malfunction.
B1868/65 One of the following conditions is met:
  • The center airbag sensor assembly detects a short circuit to B+ signal in the front passenger side knee squib circuit for 0.5 seconds.
  • A front passenger side knee squib malfunction.
  • A center airbag sensor assembly malfunction.