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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes & Vehicle Control History (Hybrid) >> Airbag System >> DTC B1815/54: Short in Front Passenger Side Squib 2nd Step Circuit; DTC B1816/54: Open in Front Passenger Side Squib 2nd Step Circuit; DTC B1817/54: Short to GND in Front Passenger Side Squib 2nd Step Circuit; DTC B1818/54: Short to B+ in Front Passenger Side Squib 2nd Step Circuit [02/2014 - ] >> Description

DTC B1815/54: Short in Front Passenger Side Squib 2nd Step Circuit; DTC B1816/54: Open in Front Passenger Side Squib 2nd Step Circuit; DTC B1817/54: Short to GND in Front Passenger Side Squib 2nd Step Circuit; DTC B1818/54: Short to B+ in Front Passenger Side Squib 2nd Step Circuit [02/2014 - ]: Description

The front passenger side squib 2nd step circuit consists of the airbag sensor assembly and instrument panel passenger 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 front passenger side squib 2nd step circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1815/54 Short in Front Passenger Side Squib 2nd Step Circuit
  • The airbag sensor assembly detects a line short in the front passenger side squib 2nd step circuit during primary check.
  • Front passenger side squib 2nd step malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • No. 2 instrument panel wire
  • Front passenger side squib 2nd step (Instrument panel passenger airbag assembly)
  • Airbag sensor assembly
 Applies to check mode
B1816/54 Open in Front Passenger Side Squib 2nd Step Circuit
  • The airbag sensor assembly detects an open in the front passenger side squib 2nd step circuit.
  • Front passenger side squib 2nd step malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • No. 2 instrument panel wire
  • Front passenger side squib 2nd step (Instrument panel passenger airbag assembly)
  • Airbag sensor assembly
 Applies to check mode
B1817/54 Short to GND in Front Passenger Side Squib 2nd Step Circuit
  • The airbag sensor assembly detects a short to ground in the front passenger side squib 2nd step circuit.
  • Front passenger side squib 2nd step malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • No. 2 instrument panel wire
  • Front passenger side squib 2nd step (Instrument panel passenger airbag assembly)
  • Airbag sensor assembly
 Applies to check mode
B1818/54 Short to B+ in Front Passenger Side Squib 2nd Step Circuit
  • The airbag sensor assembly detects a short to B+ in the front passenger side squib 2nd step circuit.
  • Front passenger side squib 2nd step malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • No. 2 instrument panel wire
  • Front passenger side squib 2nd step (Instrument panel passenger airbag assembly)
  • Airbag sensor assembly
 Applies to check mode
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