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Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 82 (Audio, Visual & Navigation System (Base Audio Without Navigation) (DTC/Circuit Diagnosis)) >> DTC / Circuit Diagnosis >> DTC U1300: Av Comm Circuit >> Description >> Self-Diagnosis Results Display Item

Self-Diagnosis Results Display Item

WARNING: This page is about a different car, the 2016 Infiniti QX50. However, it is still accessible from the selected car via links, so may be relevant.
DTC Display contents of CONSULT DTC detection condition Possible malfunction factor
U1300
U1240
  • AV COMM CIRCUIT [U1300]
  • SWITCH CONN [U1240]
 When either one of the following items is detected:
  • multifunction switch power supply and ground circuits are malfunctioning.
  • AV communication circuits between AV control unit and multifunction switch are malfunctioning.
  • Multifunction switch power supply and ground circuits.
  • AV communication circuits between AV control unit and multifunction switch.
U1300
U1256
  • AV COMM CIRCUIT [U1300]
  • HAND FREE CONN [U1256]
 When either one of the following items is detected:
  • TEL adapter unit power supply and ground circuits are malfunctioning.
  • AV communication circuits between multifunction switch and TEL adapter unit are malfunctioning.
  • TEL adapter unit power supply and ground circuits.
  • AV communication circuits between multifunction switch and TEL adapter unit.
U1300
U1240
U1256
  • AV COMM CIRCUIT [U1300]
  • SWITCH CONN [U1240]
  • HAND FREE CONN [U1256]
 Malfunction is detected in AV communication circuits between AV control unit and multifunction switch. AV communication circuits between AV control unit and multifunction switch.
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