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Home >> Toyota >> 2013 >> Prius Plug-in >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 131 (Occupant Classification System (Diagnostic Codes & Symptom Tests) (Except Plug-In)) >> Occupant Classification System >> DTC B1790: Center Airbag Sensor Assembly Communication Circuit Malfunction >> Description
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DTC B1790: Center Airbag Sensor Assembly Communication Circuit Malfunction: Description

WARNING: This page is about a different variant/trim than selected.

The center airbag sensor assembly communication circuit consists of the occupant classification ECU and center airbag sensor assembly.

DTC B1790 is stored when a malfunction is detected in the center airbag sensor assembly communication circuit.

DTC No. DTC Detection Condition Trouble Area
B1790
  • The occupant classification ECU receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the center airbag sensor assembly communication circuit.
  • Occupant classification ECU malfunction
  • Center airbag sensor assembly malfunction
  • No. 2 floor wire
  • Front seat wire RH
  • Occupant classification ECU
  • Center airbag sensor assembly

HINT: 

When DTC B1650/32 is detected as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant classification ECU. When DTC B1790 is output, perform troubleshooting for the DTC.