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Home >> Lexus >> 2013 >> GS 450h >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes (B1692/81 - B1928/78) & Symptom Tests) >> Airbag System >> DTC B1800/51: Short in Driver Side Squib Circuit; DTC B1801/51: Open in Driver Side Squib Circuit; DTC B1802/51: Short to GND in Driver Side Squib Circuit; DTC B1803/51: Short to B+ in Driver Side Squib Circuit >> Description

DTC B1800/51: Short in Driver Side Squib Circuit; DTC B1801/51: Open in Driver Side Squib Circuit; DTC B1802/51: Short to GND in Driver Side Squib Circuit; DTC B1803/51: Short to B+ in Driver Side Squib Circuit: Description

  1. The driver side squib circuit consists of the center airbag sensor assembly, spiral cable sub-assembly and horn button assembly.
  2. The circuit instructs the SRS to deploy when deployment conditions are met.
  3. These DTCs are stored when a malfunction is detected in the driver side squib circuit.
DTC Code DTC Detection Condition Trouble Area
B1800/51 One of the following conditions is met:
  • The center airbag sensor assembly detects a line short circuit signal 5 times in the driver side squib circuit during the primary check.
  • A driver side squib malfunction.
  • A spiral cable sub-assembly malfunction.
  • A center airbag sensor assembly malfunction.
  • Instrument panel wire
  • Spiral cable sub-assembly
  • Horn button assembly (Driver side squib)
  • Center airbag sensor assembly
B1801/51 One of the following conditions is met:
  • The center airbag sensor assembly detects an open circuit signal in the driver side squib circuit for 2 seconds.
  • A driver side squib malfunction.
  • A spiral cable sub-assembly malfunction.
  • A center airbag sensor assembly malfunction.
B1802/51 One of the following conditions is met:
  • The center airbag sensor assembly detects a short circuit to ground signal in the driver side squib circuit for 0.5 seconds.
  • A driver side squib malfunction.
  • A spiral cable sub-assembly malfunction.
  • A center airbag sensor assembly malfunction.
B1803/51 One of the following conditions is met:
  • The center airbag sensor assembly detects a short circuit to B+ signal in the driver side squib circuit for 0.5 seconds.
  • A driver side squib malfunction.
  • A spiral cable sub-assembly malfunction.
  • A center airbag sensor assembly malfunction.