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Home >> Toyota >> 2022 >> RAV4 LE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 77 (Airbag System (W/ OCS) - Diagnostic Codes (2 Of 4)) >> AIRBAG SYSTEM (w/ Occupant Classification System) >> DTC B163B: Side Airbag Sensor Assembly No. 2 Lost Communication (LH); DTC B163C: Side Airbag Sensor Assembly No. 2 Initialization Error (LH) [02/2019 - 08/2020] >> Description

DTC B163B: Side Airbag Sensor Assembly No. 2 Lost Communication (LH); DTC B163C: Side Airbag Sensor Assembly No. 2 Initialization Error (LH) [02/2019 - 08/2020]: Description

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The side collision sensor LH circuit consists of the airbag ECU assembly and floor side airbag sensor LH.

The floor side airbag sensor LH detects impacts to the vehicle and send signals to the airbag ECU assembly to determine if the SRS should be deployed.

These DTCs are stored when a malfunction is detected in the No. 2 side collision sensor LH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B163B Side Airbag Sensor Assembly No. 2 Lost Communication (LH) One of the following conditions is met:
  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor LH circuit.
  • A floor side airbag sensor LH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Floor side airbag sensor LH
  • Airbag ECU assembly
Comes on Not applicable
B163C Side Airbag Sensor Assembly No. 2 Initialization Error (LH) One of the following conditions is met:
  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor LH circuit.
  • A floor side airbag sensor LH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Floor side airbag sensor LH
  • Airbag ECU assembly
Comes on Not applicable