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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System (VDC/TCS/Abs) (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> C1109 Power And Ground System >> DTC Description

DTC Description

DTC DETECTION LOGIC 

DTC No. CONSULT screen terms(Trouble diagnosis content) DTC detection condition
C1109-16 BATTERY VOLTAGE [VB-HIGH](Battery voltage [high]) Diagnosis condition When ignition switch is ON.
Signal (terminal) Ignition power supply
Threshold When ignition power supply voltage out of range.
Diagnosis delay time 5 second or more
C1109-17 BATTERY VOLTAGE [ABNORMAL](Battery voltage [abnormal]) Diagnosis condition When ignition switch is ON.
Signal (terminal) Ignition power supply
Threshold When ignition power supply voltage out of range.
Diagnosis delay time 5 second or more

POSSIBLE CAUSE 

NOTE: SYMBOL Confirm if DTC is PAST or CRNT. If DTC is CRNT, proceed with Diagnosis Procedure. If DTC is PAST, clear the DTC. Do not replace the ABS actuator and electric unit (control unit) for a PAST DTC.
PAST DTC CRNT DTC
  • Harness or connector
  • ABS actuator and electric unit (control unit) power supply system
  • Fuse
  • Fusible link
  • Battery
  • Charge system
  • Harness or connector
  • ABS actuator and electric unit (control unit)
  • Fuse block J/B
  • ABS actuator and electric unit (control unit) power supply system
  • Fuse
  • Fusible link
  • Battery
  • Charge system

FAIL-SAFE 

The following systems are suspended: