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Home >> Lexus >> 2021 >> LC 500 2D Coupe >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (Coupe) (1 Of 5) >> Airbag System >> DTC B1630: Curtain Shield Airbag Sensor (RH); DTC B1632: Curtain Shield Airbag Sensor Lost Communication (RH); DTC B1635: Curtain Shield Airbag Sensor (LH); DTC B1637: Curtain Shield Airbag Sensor Lost Communication (LH) [05/2023 - ] >> Description

DTC B1630: Curtain Shield Airbag Sensor (RH); DTC B1632: Curtain Shield Airbag Sensor Lost Communication (RH); DTC B1635: Curtain Shield Airbag Sensor (LH); DTC B1637: Curtain Shield Airbag Sensor Lost Communication (LH) [05/2023 - ]: Description

The rear airbag sensor LH or RH consists of a lateral deceleration sensor, etc.

If the airbag ECU assembly receives signals from the lateral deceleration sensor, it determines whether the SRS should be activated.

DTC B1630, B1632, B1635 or B1637 is stored when a malfunction is detected in the rear airbag sensor LH or RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1630 Curtain Shield Airbag Sensor (RH) Either condition is met:
  • A rear airbag sensor RH malfunction.
  • An airbag ECU assembly malfunction.
  • Rear airbag sensor RH
  • Airbag ECU assembly
Comes on Not applicable
B1632 Curtain Shield Airbag Sensor Lost Communication (RH) Either condition is met:
  • A rear airbag sensor RH malfunction.
  • An airbag ECU assembly malfunction.
  • Rear airbag sensor RH
  • Airbag ECU assembly
Comes on Not applicable
B1635 Curtain Shield Airbag Sensor (LH) Either condition is met:
  • A rear airbag sensor LH malfunction.
  • An airbag ECU assembly malfunction.
  • Rear airbag sensor LH
  • Airbag ECU assembly
Comes on Not applicable
B1637 Curtain Shield Airbag Sensor Lost Communication (LH) Either condition is met:
  • A rear airbag sensor LH malfunction.
  • An airbag ECU assembly malfunction.
  • Rear airbag sensor LH
  • Airbag ECU assembly
Comes on Not applicable