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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 B1810/53: Short in Driver Side Squib 2nd Step Circuit; DTC B1811/53: Open in Driver Side Squib 2nd Step Circuit; DTC B1812/53: Short to GND in Driver Side Squib 2nd Step Circuit; DTC B1813/53: Short to B+ in Driver Side Squib 2nd Step Circuit >> Description

DTC B1810/53: Short in Driver Side Squib 2nd Step Circuit; DTC B1811/53: Open in Driver Side Squib 2nd Step Circuit; DTC B1812/53: Short to GND in Driver Side Squib 2nd Step Circuit; DTC B1813/53: Short to B+ in Driver Side Squib 2nd Step Circuit: Description

The driver side squib 2nd step circuit consists of the center airbag sensor assembly, spiral cable sub-assembly and horn button assembly.

The circuit instructs the SRS to deploy when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the driver side squib 2nd step circuit.

DTC Code DTC Detection Condition Trouble Area
B1810/53 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 2nd step circuit during the primary check.
  • A driver side squib 2nd step 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 2nd step)
  • Center airbag sensor assembly
B1811/53 One of the following conditions is met:
  • The center airbag sensor assembly detects an open circuit signal in the driver side squib 2nd step circuit for 2 seconds.
  • A driver side squib 2nd step malfunction.
  • A spiral cable sub-assembly malfunction.
  • A center airbag sensor assembly malfunction.
B1812/53 One of the following conditions is met:
  • The center airbag sensor assembly detects a short circuit to ground signal in the driver side 2nd step circuit for 0.5 seconds.
  • A driver side squib 2nd step malfunction.
  • A spiral cable sub-assembly malfunction.
  • A center airbag sensor assembly malfunction.
B1813/53 One of the following conditions is met:
  • The center airbag sensor assembly detects a short circuit to B+ signal in the driver side squib 2nd step circuit for 0.5 seconds.
  • A driver side squib 2nd step malfunction.
  • A spiral cable sub-assembly malfunction.
  • A center airbag sensor assembly malfunction.
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