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Home >> Toyota >> 2021 >> C-HR XLE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (B1000-B1620) >> Airbag System >> DTC B1620/21: Side Airbag Sensor RH Circuit Malfunction [02/2017 - 09/2019] >> Description

DTC B1620/21: Side Airbag Sensor RH Circuit Malfunction [02/2017 - 09/2019]: Description

The side collision sensor RH circuit (bus 1) consists of the airbag sensor assembly, door side airbag sensor RH, No. 1 side airbag sensor RH and No. 2 side airbag sensor RH.

The door side airbag sensor RH, No. 1 side airbag sensor RH and No. 2 side airbag sensor RH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbags and pretensioners should be deployed.

DTC B1620/21 is stored when a malfunction is detected in the No. 1 side airbag sensor RH.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1620/21 Side Airbag Sensor RH Circuit Malfunction Any of the following conditions is met:
  • No. 1 side airbag sensor RH malfunction
  • Airbag sensor assembly malfunction
  • No. 1 side airbag sensor RH
  • Airbag sensor assembly
Does not apply to test/check mode
DTC DETECTION CONDITIONS:

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Ignition switch ON ◦ ◦
Malfunction Status No. 1 side airbag sensor RH malfunction ◦ -
Airbag sensor assembly malfunction - ◦
Detection Time - -
Number of Trips 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.