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Home >> Lexus >> 2021 >> UX 200 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> (Navigation System) (Diagnostic Codes (2 Of 2) & Symptom Tests (1 Of 2)) >> (Navigation System) >> DTC B15D9: Operation Panel Disconnected [10/2018 - 10/2019] >> Description

DTC B15D9: Operation Panel Disconnected [10/2018 - 10/2019]: Description

The switch and volume assembly and radio receiver assembly are connected by an AVC-LAN communication line. When an AVC-LAN communication error occurs between the radio receiver assembly and switch and volume assembly, these DTCs will be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15D9 Operation Panel Disconnected A device that is listed in the AVC-LAN connected device record of the master unit is missing.
  • Switch and volume assembly power source circuit
  • AVC-LAN circuit
  • Switch and volume assembly
  • Radio receiver assembly
  • Harness or connector

HINT: 

For the AVC-LAN communication line, the radio receiver assembly is the master unit.