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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 >> U1002 System Comm (Can) >> DTC Description

DTC Description

DTC DETECTION LOGIC 

DTC No. CONSULT screen item(Trouble diagnosis content) DTC detected condition
U1002-01 SYSTEM COMM (CAN) (CAN system communication) Diagnosis condition
  • When ignition switch is ON.
  • When power supply voltage is normal.
Signal (terminal) CAN communication signal
Threshold When ABS actuator and electric unit (control unit) is not transmitting or receiving CAN communication signal.
Diagnosis delay time 2 seconds or less

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
  • CAN communication line
  • Harness or connector
  • CAN communication line
  • ABS actuator and electric unit (control unit)
  • Steering angle sensor

FAIL-SAFE 

The following systems are suspended: