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Home >> Toyota >> 2020 >> Mirai >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (2 Of 3) >> Airbag System >> DTC B1800-51: Short in Driver Side Squib Circuit [06/2015 - ] >> Description

DTC B1800-51: Short in Driver Side Squib Circuit [06/2015 - ]: Description

The driver side squib circuit consists of the airbag sensor assembly, spiral cable sub-assembly and horn button assembly.

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

DTC B1800/51 is stored when a line short is detected in the driver side squib circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1800/51 Short in Driver Side Squib Circuit
  • The airbag sensor assembly detects a line short in the driver side squib circuit during primary check.
  • Spiral cable sub-assembly malfunction
  • Driver side squib malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • Spiral cable sub-assembly
  • Driver side squib (Horn button assembly)
  • Airbag sensor assembly
Applies to check mode