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Home >> Lexus >> 2020 >> LC 500 >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Navigation System - Diagnostic Codes (Coupe) (2 Of 2) & Symptom Tests (1 Of 2) >> Navigation System >> DTC B15DB: Telematics Transceiver Disconnected [04/2020 - 05/2023] >> Description

DTC B15DB: Telematics Transceiver Disconnected [04/2020 - 05/2023]: Description

If the radio receiver assembly cannot detect the DCM (telematics transceiver) for a certain period of time (90 seconds) after the engine switch is turned on (IG) and the radio receiver assembly confirms that the information is missing by checking past DCM (telematics transceiver) recognition information (registered information), this DTC will be stored.

HINT: 

The LEXUS Enform system uses USB communication between devices. If an open, short, short to +B or short to ground occurs in the USB circuit, communication is interrupted and the LEXUS Enform system will not operate normally.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15DB Telematics Transceiver Disconnected DCM (telematics transceiver) disconnected
  • Harness or connector
  • DCM (telematics transceiver)
  • Radio receiver assembly
  • Navigation ECU

HINT: 

This DTC may be stored due to environmental reasons such as electrical noise or interference.