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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 B1633: Curtain Shield Airbag Sensor Initialization Error (RH) [02/2019 - 08/2020] >> Description

DTC B1633: Curtain Shield Airbag Sensor Initialization Error (RH) [02/2019 - 08/2020]: Description

WARNING: This page is about a different car, the 2020 Toyota RAV4 and 2019 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

The side collision sensor RH circuit consists of the airbag ECU assembly, side airbag pressure sensor RH and No. 2 side airbag sensor assembly RH.

The No. 2 side airbag sensor assembly RH detects impacts to the vehicle and send signals to the airbag ECU assembly to determine if the SRS should be deployed.

DTC B1633 is stored when a malfunction is detected in the circuit for the side collision sensor RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1633 Curtain Shield Airbag Sensor Initialization Error (RH) One of the following conditions is met:
  • The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side collision sensor RH for 2 seconds.
  • A No. 2 side airbag sensor assembly RH malfunction.
  • An airbag ECU assembly malfunction.
  • Floor wire
  • Front door wire RH
  • No. 2 side airbag sensor assembly RH
  • Airbag ECU assembly
Comes on Not applicable