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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 B1612/83: Lost Communication with Front Airbag Sensor RH; DTC B1613/83: Front Airbag Sensor RH Initialization Incomplete [10/2017 - 09/2019] >> Description

DTC B1612/83: Lost Communication with Front Airbag Sensor RH; DTC B1613/83: Front Airbag Sensor RH Initialization Incomplete [10/2017 - 09/2019]: Description

The front airbag sensor RH circuit consists of the airbag sensor assembly and front airbag sensor RH.

The front airbag sensor RH detects impacts to the vehicle and sends signals to the airbag sensor assembly to determine if the airbags and pretensioners should be deployed.

These DTCs are stored when a malfunction is detected in the front airbag sensor RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1612/83 Lost Communication with Front Airbag Sensor RH Any of the following conditions is met:
  • The airbag sensor assembly detects a line short in the front airbag sensor RH circuit.
  • The airbag sensor assembly detects a short to ground in the front airbag sensor RH circuit.
  • The airbag sensor assembly detects a short to B+ in the front airbag sensor RH circuit.
  • The airbag sensor assembly detects an open in the front airbag sensor RH circuit.
  • Front airbag sensor RH malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • Engine room main wire
  • Front airbag sensor RH
  • Airbag sensor assembly
Does not apply to test/check mode
B1613/83 Front Airbag Sensor RH Initialization Incomplete Any of the following conditions is met:
  • The airbag sensor assembly detects a line short in the front airbag sensor RH circuit.
  • The airbag sensor assembly detects a short to ground in the front airbag sensor RH circuit.
  • The airbag sensor assembly detects a short to B+ in the front airbag sensor RH circuit.
  • The airbag sensor assembly detects an open in the front airbag sensor RH circuit.
  • Front airbag sensor RH malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • Engine room main wire
  • Front airbag sensor RH
  • Airbag sensor assembly
Does not apply to test/check mode
DTC DETECTION CONDITIONS (B1612/83):

  Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6
Diagnosis Condition Ignition switch ON
Malfunction Status The airbag sensor assembly detects a line short in the front airbag sensor RH circuit - - - - -
The airbag sensor assembly detects a short to ground in the front airbag sensor RH circuit - - - - -
The airbag sensor assembly detects a short to B+ in the front airbag sensor RH circuit - - - - -
The airbag sensor assembly detects an open in the front airbag sensor RH circuit - - - - -
Front airbag sensor RH malfunction - - - - -
Airbag sensor assembly malfunction - - - - -
Detection Time - - - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip 1 trip 1 trip
DTC DETECTION CONDITIONS (B1613/83):

  Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6
Diagnosis Condition Ignition switch ON
Malfunction Status The airbag sensor assembly detects a line short in the front airbag sensor RH circuit - - - - -
The airbag sensor assembly detects a short to ground in the front airbag sensor RH circuit - - - - -
The airbag sensor assembly detects a short to B+ in the front airbag sensor RH circuit - - - - -
The airbag sensor assembly detects an open in the front airbag sensor RH circuit - - - - -
Front airbag sensor RH malfunction - - - - -
Airbag sensor assembly malfunction - - - - -
Detection Time - - - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip 1 trip 1 trip

HINT: 

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