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DTC B1790 Center Airbag Sensor Assembly Communication Circuit Malfunction: Description

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

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

DTC DETECTION CONDITION CHART

DTC No. DTC Detecting 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 for 2 seconds.
  • Center airbag sensor assembly malfunction
  • Occupant classification ECU malfunction
  • Occupant classification ECU
  • Center airbag sensor assembly
  • Floor wire ((1))
  • Instrument panel wire No. 3 ((2))
(1) w/ Side and curtain shield airbag
(2) w/o Side and curtain shield airbag
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