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Home >> Infiniti >> 2017 >> QX70 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 211 (Brake Control System (Diagnostic Trouble Codes (DTCS) C1AC0-U1511 And Circuit Diagnosis) (Hybrid)) >> DTC / Circuit Diagnosis >> DTC U1511: Brake Power Supply Backup Unit Communication >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
DTC Display item
(Trouble diagnosis content)		 Malfunction detection condition
U1511 POWER SUPPLY BACKUP UNIT COMM
(Power supply backup unit communication)		 Signals from power backup communications line* are not sent or received continuously for 4 seconds or more.

* : Communications line between electrically-driven intelligent brake unit and brake power supply backup unit.

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