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Home >> Infiniti >> 2014 >> QX50 Journey, AWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> SRS Airbag Control System >> DTC/Circuit Diagnosis >> DTC B0020: Side Air Bag Module >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC CONSULT screen items (Trouble diagnosis content) DTC detecting condition Possible cause
B0020 SIDE A/B MODULE LH [Left Side Airbag Deployment Control (Subfault)] [OPEN] Side air bag module LH circuit is open
  • Connection malfunction or open circuit of harness and connector
  • Internal malfunction of side air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit
[VB-SHORT] Side air bag module LH circuit is shorted to power supply circuit
  • Connection malfunction or short circuit to power supply of harness and connector
  • Internal malfunction of side air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit
[GND-SHORT] Side air bag module LH circuit is shorted to ground
  • Connection malfunction or short circuit to ground of harness and connector
  • Internal malfunction of side air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit
[SHORT] Side air bag module LH circuits are shorted to each other
  • Connection malfunction or short circuit of harness and connector
  • Internal malfunction of side air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit