Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: HD Radio Tuner Malfunction (B1551,B15A0,B15B3-B15B5,B15B7,B15F9)

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System (for 12.3 Inch Display) / HD Radio Tuner Malfunction (B1551,B15A0,B15B3-B15B5,B15B7,B15F9)

DESCRIPTION

These DTCs are stored when a malfunction occurs in the radio receiver assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B1551	HD Radio Tuner Malfunction	When any of the following conditions is met: "HD Radio" tuner decoder malfunction "HD Radio" tuner audio output section malfunction "HD Radio" tuner decoder RF/IF malfunction	Radio receiver assembly
B15A0	LAN Master Malfunction	When either of the following conditions is met: Bus malfunction EEPROM error	Radio receiver assembly
B15B3	Radio Tuner Malfunction	When any of the following conditions is met: AM tuner PLL is unlocked FM tuner PLL is unlocked Tuner malfunction	Radio receiver assembly
B15B4	CD Changer Malfunction	When any of the following conditions is met: Mechanism drive signal malfunction Load/Eject malfunction Read mechanism malfunction Mechanical malfunction	Radio receiver assembly
B15B5	DVD Changer Malfunction	When any of the following conditions is met: Mechanism drive signal malfunction Load/Eject malfunction Read mechanism malfunction Mechanical malfunction	Radio receiver assembly
B15B7	Bluetooth Module Malfunction	"Bluetooth" module malfunction	Radio receiver assembly
B15F9	UART Communication Malfunction(for A/C)	When either of the following conditions is met: Open in UART communication line is detected during radio receiver assembly startup routine Open in UART communication line is detected based on communication error	Radio receiver assembly

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

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PROCEDURE

CHECK DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

USE SIMULATION METHOD TO CHECK

REPLACE RADIO RECEIVER ASSEMBLY

Extension Module Disconnected 2 (B1543)

DESCRIPTION If the radio receiver assembly cannot detect the navigation ECU for a certain period of time (90 seconds) after the engine switch is turned on (ACC) and the radio receiver assembly confirm ...

Extension Module Malfunction 2 (B1556)

DESCRIPTION This DTC is stored when a malfunction occurs in the Navigation ECU. DTC No. Detection Item DTC Detection Condition Trouble Area B1556 Extension Module Malfunction 2 When a ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Terminals Of Ecu
TERMINALS OF ECU HINT: Check from the rear of the connector while it is connected to the components. RADIO RECEIVER ASSEMBLY Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J151-1 (VMTF) - J148-1 (GND1) Y - W-B Visual mute signal Engine swi ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Air Cooled Oil Cooler: Installation
INSTALLATION PROCEDURE 1. INSTALL OIL COOLER BRACKET HINT: Perform this procedure only when replacement of the oil cooler bracket is necessary. (a) Install the oil cooler bracket to the vehicle body with the bolt and nut. Torque: 5.5 N·m {56 kgf·cm, 49 in·lbf} NOTICE: Tightening order: Tempor ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: HD Radio Tuner Malfunction (B1551,B15A0,B15B3-B15B5,B15B7,B15F9)

Extension Module Disconnected 2 (B1543)

Extension Module Malfunction 2 (B1556)

Other materials:

Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual