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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 53 (Supplemental Restraint System - Diagnostic Codes (B1160-B1653) (Hybrid)) >> AIRBAG SYSTEM (for HV Model) >> DTC B1632: Curtain Shield Airbag Sensor Lost Communication (RH); DTC B1633: Curtain Shield Airbag Sensor Initialization Error (RH) [04/2018 -] >> Description

DTC B1632: Curtain Shield Airbag Sensor Lost Communication (RH); DTC B1633: Curtain Shield Airbag Sensor Initialization Error (RH) [04/2018 -]: Description

WARNING: This page is about a different variant/trim than selected.

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

The side airbag pressure sensor RH and side No. 2 airbag sensor RH detect impacts to the vehicle and send signals to the airbag ECU 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 1).

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1632 Curtain Shield Airbag Sensor Lost Communication (RH)
  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit (bus 1).
  • Side airbag pressure sensor RH malfunction
  • Side No. 2 airbag sensor RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front door wire RH
  • Side airbag pressure sensor RH
  • Side No. 2 airbag sensor RH
  • Airbag ECU assembly
Comes on Does not apply to test/check mode
B1633 Curtain Shield Airbag Sensor Initialization Error (RH)
  • The airbag ECU assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit (bus 1).
  • Side airbag pressure sensor RH malfunction
  • Side No. 2 airbag sensor RH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Front door wire RH
  • Side airbag pressure sensor RH
  • Side No. 2 airbag sensor RH
  • Airbag ECU assembly
Comes on Does not apply to test/check mode