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Home >> Toyota >> 2012 >> FJ Cruiser 4WD, Part Time T/Case Control >> Repair and Diagnosis (Single Page) >> Restraints >> Restraints Control Systems >> Supplemental Restraint System (Diagnostic Codes & Symptom Tests) >> Airbag System >> DTC B1820/55: Short in Front Driver Side - Side Squib Circuit; DTC B1821/55: Open in Front Driver Side - Side Squib Circuit; DTC B1822/55: Short to GND in Front Driver Side - Side Squib Circuit; DTC B1823/55: Short to B+ in Front Driver Side - Side Squib Circuit >> Description
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DTC B1820/55: Short in Front Driver Side - Side Squib Circuit; DTC B1821/55: Open in Front Driver Side - Side Squib Circuit; DTC B1822/55: Short to GND in Front Driver Side - Side Squib Circuit; DTC B1823/55: Short to B+ in Front Driver Side - Side Squib Circuit: Description

The driver side - side squib circuit consists of the center airbag sensor assembly and the front seat side airbag assembly LH.

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

These DTCs are recorded when a malfunction is detected in the driver side - side squib circuit.

DTC No. Detection Condition Trouble Area
B1820/55
  • Center airbag sensor assembly detects line short circuit signal in driver side - side squib circuit 5 times during primary check.
  • Driver side - side squib malfunction
  • Center airbag sensor assembly malfunction
  • No. 2 floor wire
  • Front seat side airbag assembly LH (Driver side - side squib)
  • Center airbag sensor assembly
B1821/55
  • Center airbag sensor assembly detects open circuit signal in driver side - side squib circuit for 2 seconds.
  • Driver side - side squib malfunction
  • Center airbag sensor assembly malfunction
  • No. 2 floor wire
  • Front seat side airbag assembly LH (Driver side - side squib)
  • Center airbag sensor assembly
B1822/55
  • Center airbag sensor assembly detects short circuit to ground signal in driver side - side squib circuit for 0.5 seconds.
  • Driver side - side squib malfunction
  • Center airbag sensor assembly malfunction
  • No. 2 floor wire
  • Front seat side airbag assembly LH (Driver side - side squib)
  • Center airbag sensor assembly
B1823/55
  • Center airbag sensor assembly detects short circuit to B+ signal in driver side - side squib circuit for 0.5 seconds.
  • Driver side - side squib malfunction
  • Center airbag sensor assembly malfunction
  • No. 2 floor wire
  • Front seat side airbag assembly LH (Driver side - side squib)
  • Center airbag sensor assembly