FixVault

DTC Detection Logic

DTC Display Item Malfunction detected condition Possible causes
C1109 BATTERY VOLTAGE [ABNORMAL] When power switch ON power supply voltage is in following state.
  • Power switch ON power supply voltage: 10 V ≥ Power switch ON power supply voltage.
  • Power switch ON power supply voltage: 16 V ≤ Power switch ON power supply voltage.
  • Harness or connector
  • ABS actuator and electric unit (control unit)
  • Fuse
  • Power switch ON power supply system
  • 12V battery