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DTC Detection Logic

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
DTC Display Item Malfunction detected condition Possible causes
C1109 BATTERY VOLTAGE [ABNORMAL]
  • When ignition voltage is 10 V or less.
  • When ignition voltage is 16 V or more.
  • Harness or connector
  • ABS actuator and electric unit (control unit)
  • Fuse
  • Ignition power supply system
  • Battery
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