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Home >> Scion >> 2012 >> tC Automatic Trans >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes & Symptom Tests) >> Airbag System >> DTC B1860/64: Short in Driver Side Knee Airbag Squib Circuit; DTC B1861/64: Open in Driver Side Knee Airbag Squib Circuit; DTC B1862/64: Short to GND in Driver Side Knee Airbag Squib Circuit; DTC B1863/64: Short to B+ in Driver Side Knee Airbag Squib Circuit >> Description

DTC B1860/64: Short in Driver Side Knee Airbag Squib Circuit; DTC B1861/64: Open in Driver Side Knee Airbag Squib Circuit; DTC B1862/64: Short to GND in Driver Side Knee Airbag Squib Circuit; DTC B1863/64: Short to B+ in Driver Side Knee Airbag Squib Circuit: Description

The driver side knee squib circuit consists of the center airbag sensor and lower No. 1 instrument panel airbag.

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

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

DTC Code DTC Detection Condition Trouble Area
B1860/64 One of the following conditions is met:
  • The center airbag sensor detects a line short circuit signal 5 times in the driver side knee squib circuit during the primary check.
  • A driver side knee squib malfunction.
  • A center airbag sensor malfunction.
  • Instrument panel wire
  • Lower No. 1 instrument panel airbag assembly (Driver side knee squib)
  • Center airbag sensor assembly
B1861/64 One of the following conditions is met:
  • The center airbag sensor detects an open circuit signal in the driver side knee squib circuit for 2 seconds.
  • A driver side knee squib malfunction.
  • A center airbag sensor malfunction.
  • Instrument panel wire
  • Lower No. 1 instrument panel airbag assembly (Driver side knee squib)
  • Center airbag sensor assembly
B1862/64 One of the following conditions is met:
  • The airbag sensor center detects a short circuit to ground signal in the driver side knee squib circuit for 0.5 seconds.
  • A driver side knee squib malfunction.
  • A center airbag sensor malfunction.
  • Instrument panel wire
  • Lower No. 1 instrument panel airbag assembly (Driver side knee squib)
  • Center airbag sensor assembly
B1863/64 One of the following conditions is met:
  • The airbag sensor center detects a short circuit to B+ signal in the driver side knee squib circuit for 0.5 seconds.
  • A driver side knee squib malfunction.
  • A center airbag sensor malfunction.
  • Instrument panel wire
  • Lower No. 1 instrument panel airbag assembly (Driver side knee squib)
  • Center airbag sensor assembly