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Home >> Toyota >> 2021 >> Avalon TRD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (B1660-U0154) & Symptom Tests (Except Hybrid) >> AIRBAG SYSTEM (for Gasoline Model) >> DTC B1835: Short in Curtain Shield Airbag (LH) Squib Circuit; DTC B1836: Open in Curtain Shield Airbag (LH) Squib Circuit; DTC B1837: Short in Curtain Shield Airbag (LH) Squib Circuit (to Ground); DTC B1838: Short in Curtain Shield Airbag (LH) Squib Circuit (to +B) [04/2018 -] >> Description

DTC B1835: Short in Curtain Shield Airbag (LH) Squib Circuit; DTC B1836: Open in Curtain Shield Airbag (LH) Squib Circuit; DTC B1837: Short in Curtain Shield Airbag (LH) Squib Circuit (to Ground); DTC B1838: Short in Curtain Shield Airbag (LH) Squib Circuit (to +B) [04/2018 -]: Description

The curtain shield squib LH circuit consists of the airbag ECU assembly and curtain shield airbag assembly LH.

The airbag ECU assembly uses this circuit to deploy the airbag when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the curtain shield squib LH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1835 Short in Curtain Shield Airbag (LH) Squib Circuit
  • The airbag ECU assembly detects a line short in the curtain shield squib LH circuit during the primary check.
  • Curtain shield squib LH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Curtain shield squib LH (Curtain shield airbag assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
B1836 Open in Curtain Shield Airbag (LH) Squib Circuit
  • The airbag ECU assembly detects an open in the curtain shield squib LH circuit.
  • Curtain shield squib LH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Curtain shield squib LH (Curtain shield airbag assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
B1837 Short in Curtain Shield Airbag (LH) Squib Circuit (to Ground)
  • The airbag ECU assembly detects a short to ground in the curtain shield squib LH circuit.
  • Curtain shield squib LH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Curtain shield squib LH (Curtain shield airbag assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
B1838 Short in Curtain Shield Airbag (LH) Squib Circuit (to +B)
  • The airbag ECU assembly detects a short to B+ in the curtain shield squib LH circuit.
  • Curtain shield squib LH malfunction
  • Airbag ECU assembly malfunction
  • Floor wire
  • Curtain shield squib LH (Curtain shield airbag assembly LH)
  • Airbag ECU assembly
 Comes on Applies to check mode
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