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Home >> Infiniti >> 2017 >> QX70 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 225 (Audio, Visual & Navigation System (INFINITI INTOUCH) (Diagnostic Trouble Codes (DTCS) B1F10-U1725 And Circuit Diagnosis) (Hybrid)) >> DTC / Circuit Diagnosis >> DTC U1249: Audio H/U Conn >> 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 Trouble diagnosis
(Trouble diagnosis contents)		 Detecting condition
U1249 AUDIO H/U CONN
(Audio head unit connection error)
  • AV control unit power supply and ground circuits are malfunctioning.
  • AV communication circuit between display control unit and AV control unit is malfunctioning.
NOTE:

DTC U1249 is displayed with DTC U1300.

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