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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 B1603/83: Front Satellite Sensor Bus RH Initialization Incomplete; DTC B1612/83: Lost Communication with Front Airbag Sensor RH; DTC B1613/83: Front Airbag Sensor RH Initialization Incomplete >> Description
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DTC B1603/83: Front Satellite Sensor Bus RH Initialization Incomplete; DTC B1612/83: Lost Communication with Front Airbag Sensor RH; DTC B1613/83: Front Airbag Sensor RH Initialization Incomplete: Description

The front airbag sensor RH consists of parts including the diagnostic circuit and the frontal deceleration sensor.

When the center airbag sensor assembly receives signals from the frontal deceleration sensor, it determines whether or not the SRS should be activated.

DTC B1603/83, B1612/83 or B1613/83 is set when a malfunction is detected in the front airbag sensor RH circuit.

DTC No. Detection Condition Trouble Area
B1603/83
B1612/83
B1613/83
  • Center airbag sensor assembly detects line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in front airbag sensor RH circuit for 2 seconds.
  • Front airbag sensor RH malfunction
  • Center airbag sensor assembly malfunction
  • Instrument panel wire
  • Engine room main wire
  • Front airbag sensor RH
  • Center airbag sensor assembly