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Home >> Toyota >> 2021 >> Avalon Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 158 (Supplemental Restraint System - Diagnostic Codes (B1656-U0154) & Symptom Tests (Hybrid)) >> AIRBAG SYSTEM (for HV Model) >> DTC B1865: Short in Knee Airbag (P Side) Squib Circuit; DTC B1866: Open in Knee Airbag (P Side) Squib Circuit; DTC B1867: Short in Knee Airbag (P Side) Squib Circuit (to Ground); DTC B1868: Short in Knee Airbag (P Side) Squib Circuit (to +B) [04/2018 -] >> Description

DTC B1865: Short in Knee Airbag (P Side) Squib Circuit; DTC B1866: Open in Knee Airbag (P Side) Squib Circuit; DTC B1867: Short in Knee Airbag (P Side) Squib Circuit (to Ground); DTC B1868: Short in Knee Airbag (P Side) Squib Circuit (to +B) [04/2018 -]: Description

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

The front passenger side knee airbag squib circuit consists of the airbag ECU assembly and lower No. 2 instrument panel airbag assembly.

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 front passenger side knee airbag squib circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1865 Short in Knee Airbag (P Side) Squib Circuit
  • The airbag ECU assembly detects a line short in the front passenger side knee airbag squib during the primary check.
  • Front passenger side knee airbag squib malfunction
  • Airbag ECU assembly malfunction
  • Instrument panel wire
  • Front passenger side knee airbag squib (Lower No. 2 instrument panel airbag assembly)
  • Airbag ECU assembly
Comes on Applies to check mode
B1866 Open in Knee Airbag (P Side) Squib Circuit
  • The airbag ECU assembly detects an open in the front passenger side knee airbag squib.
  • Front passenger side knee airbag squib malfunction
  • Airbag ECU assembly malfunction
  • Instrument panel wire
  • Front passenger side knee airbag squib (Lower No. 2 instrument panel airbag assembly)
  • Airbag ECU assembly
Comes on Applies to check mode
B1867 Short in Knee Airbag (P Side) Squib Circuit (to Ground)
  • The airbag ECU assembly detects a short to ground in the front passenger side knee airbag squib.
  • Front passenger side knee airbag squib malfunction
  • Airbag ECU assembly malfunction
  • Instrument panel wire
  • Front passenger side knee airbag squib (Lower No. 2 instrument panel airbag assembly)
  • Airbag ECU assembly
Comes on Applies to check mode
B1868 Short in Knee Airbag (P Side) Squib Circuit (to +B)
  • The airbag ECU assembly detects a short to B+ in the front passenger side knee airbag squib.
  • Front passenger side knee airbag squib malfunction
  • Airbag ECU assembly malfunction
  • Instrument panel wire
  • Front passenger side knee airbag squib (Lower No. 2 instrument panel airbag assembly)
  • Airbag ECU assembly
Comes on Applies to check mode