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Home >> Toyota >> 2021 >> C-HR LE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (B1627-B1656) >> Airbag System >> DTC B162B/85: Side Airbag Sensor Assembly No. 2 Lost Communication (RH); DTC B162C/85: Side Airbag Sensor Assembly No. 2 Initialization Error (RH) [02/2017 - 10/2017] >> Description

DTC B162B/85: Side Airbag Sensor Assembly No. 2 Lost Communication (RH); DTC B162C/85: Side Airbag Sensor Assembly No. 2 Initialization Error (RH) [02/2017 - 10/2017]: Description

The side collision sensor RH circuit (bus 2) consists of the airbag sensor assembly and floor side airbag sensor RH.

The floor side 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 side collision sensor RH circuit (bus 2).

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B162B/85 Side Airbag Sensor Assembly No. 2 Lost Communication (RH) Any of the following conditions is met:
  • The airbag sensor assembly detects a line short in the side collision sensor RH circuit (bus 2).
  • The airbag sensor assembly detects a short to ground in the side collision sensor RH circuit (bus 2).
  • The airbag sensor assembly detects a short to B+ in the side collision sensor RH circuit (bus 2).
  • The airbag sensor assembly detects an open in the side collision sensor RH circuit (bus 2).
  • Floor side airbag sensor RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Floor side airbag sensor RH
  • Airbag sensor assembly
Does not apply to test/check mode
B162C/85 Side Airbag Sensor Assembly No. 2 Initialization Error (RH) Any of the following conditions is met:
  • The airbag sensor assembly detects a line short in the side collision sensor RH circuit (bus 2).
  • The airbag sensor assembly detects a short to ground in the side collision sensor RH circuit (bus 2).
  • The airbag sensor assembly detects a short to B+ in the side collision sensor RH circuit (bus 2).
  • The airbag sensor assembly detects an open in the side collision sensor RH circuit (bus 2).
  • Floor side airbag sensor RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Floor side airbag sensor RH
  • Airbag sensor assembly
Does not apply to test/check mode
DTC DETECTION CONDITIONS (B162B/85):

  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 side collision sensor RH circuit (bus 2) - - - - -
The airbag sensor assembly detects a short to ground in the side collision sensor RH circuit (bus 2) - - - - -
The airbag sensor assembly detects a short to B+ in the side collision sensor RH circuit (bus 2) - - - - -
The airbag sensor assembly detects an open in the side collision sensor RH circuit (bus 2) - - - - -
Floor side 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 (B162C/85):

  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 side collision sensor RH circuit (bus 2) - - - - -
The airbag sensor assembly detects a short to ground in the side collision sensor RH circuit (bus 2) - - - - -
The airbag sensor assembly detects a short to B+ in the side collision sensor RH circuit (bus 2) - - - - -
The airbag sensor assembly detects an open in the side collision sensor RH circuit (bus 2) - - - - -
Floor side 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.