DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (7 Of 7) & Symptom Tests >> Airbag System >> DTC B1860: Short in Knee Airbag (D Side) Squib Circuit; DTC B1861: Open in Knee Airbag (D Side) Squib Circuit; DTC B1862: Short in Knee Airbag (D Side) Squib Circuit (to Ground); DTC B1863: Short in Knee Airbag (D Side) Squib Circuit (to +B) [12/2019 - 11/2023] >> Description

DTC B1860: Short in Knee Airbag (D Side) Squib Circuit; DTC B1861: Open in Knee Airbag (D Side) Squib Circuit; DTC B1862: Short in Knee Airbag (D Side) Squib Circuit (to Ground); DTC B1863: Short in Knee Airbag (D Side) Squib Circuit (to +B) [12/2019 - 11/2023]: Description

The driver side knee airbag squib circuit consists of the airbag sensor assembly and lower No. 1 instrument panel airbag assembly.

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

These DTCs are stored when a malfunction is detected in the driver side knee airbag squib circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1860 Short in Knee Airbag (D Side) Squib Circuit
  • The airbag sensor assembly detects a line short in the driver side knee airbag squib during the primary check.
  • Driver side knee airbag squib malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • Driver side knee airbag squib (Lower No. 1 instrument panel airbag assembly)
  • Airbag sensor assembly
Comes on Applies to check mode
B1861 Open in Knee Airbag (D Side) Squib Circuit
  • The airbag sensor assembly detects an open in the driver side knee airbag squib.
  • Driver side knee airbag squib malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • Driver side knee airbag squib (Lower No. 1 instrument panel airbag assembly)
  • Airbag sensor assembly
Comes on Applies to check mode
B1862 Short in Knee Airbag (D Side) Squib Circuit (to Ground)
  • The airbag sensor assembly detects a short to ground in the driver side knee airbag squib.
  • Driver side knee airbag squib malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • Driver side knee airbag squib (Lower No. 1 instrument panel airbag assembly)
  • Airbag sensor assembly
Comes on Applies to check mode
B1863 Short in Knee Airbag (D Side) Squib Circuit (to +B)
  • The airbag sensor assembly detects a short to B+ in the driver side knee airbag squib.
  • Driver side knee airbag squib malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • Driver side knee airbag squib (Lower No. 1 instrument panel airbag assembly)
  • Airbag sensor assembly
Comes on Applies to check mode