FixVault

DTC Detection Logic

DTC CONSULT screen items
(Trouble diagnosis content)
DTC detecting condition Possible cause
B0021-09 CURTAIN A/B MODULE LH
[Left Curtain Deployment Control 1 (Subfault)]
[SHORT] Curtain air bag module LH circuits are shorted to each other
  • Connection malfunction or short circuit of harness and connector
  • Internal malfunction of curtain air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit
B0021-11 [GND-SHORT] Curtain air bag module LH circuit is shorted to ground
  • Connection malfunction or short circuit to ground of harness and connector
  • Internal malfunction of curtain air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit
B0021-12 [VB-SHORT] Curtain 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 curtain air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit
B0021-13 [OPEN] Curtain air bag module LH circuit is open
  • Connection malfunction or open circuit of harness and connector
  • Internal malfunction of curtain air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit
B0021-1A [SHORT] Curtain air bag module LH circuits are shorted to each other
  • Connection malfunction or short circuit of harness and connector
  • Internal malfunction of curtain air bag module LH
  • Internal malfunction of air bag diagnosis sensor unit