Toyota Tacoma (2015-2018) Service Manual: HD Radio Tuner Malfunction (B1551,B15A0,B15AD,B15B0,B15B3,B15B4,B15B7)

Toyota Tacoma (2015-2018) Service Manual / Navigation / Multi Info Display / Navigation System / HD Radio Tuner Malfunction (B1551,B15A0,B15AD,B15B0,B15B3,B15B4,B15B7)

DESCRIPTION

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

DTC No.	DTC Detection Condition	Trouble Area
B1551	When one of the conditions below is met: "HD Radio" tuner decoder malfunction "HD Radio" tuner audio output section malfunction "HD Radio" tuner decoder RF/IF malfunction	Navigation receiver assembly
B15A0	When either condition below is met: Bus malfunction EEPROM error
B15AD	When one of the conditions below is met: Short to ground or +B, or open occurs in gyro signal circuit Gyro sensor malfunction GPS receiver malfunction
B15B0	Picture circuit (TFT unit) malfunction
B15B3	When one of the conditions below is met: AM tuner PLL is unlocked FM tuner PLL is unlocked Tuner malfunction
B15B4	When one of the conditions below is met: Mechanism drive signal malfunction Load/Eject malfunction Read mechanism malfunction Mechanical malfunction
B15B7	"Bluetooth" module malfunction

PROCEDURE

CHECK DTC

(a) Clear the DTCs (See page (b) Recheck for DTCs and check if the same DTC is output again. ).

(b) Recheck for DTCs and check if the same DTC is output again.

OK:

No DTCs are output.

USE SIMULATION METHOD TO CHECK

REPLACE NAVIGATION RECEIVER ASSEMBLY

LVDS Signal Malfunction (from Extension Module) (B1532,B156C)

DESCRIPTION DTC Code DTC Detection Condition Trouble Area B1532 When one of the conditions below is met: Video signal (digit ...

Extension Module Malfunction (B1552,B158A,B15BA)

DESCRIPTION These DTCs are stored when a malfunction occurs in the extension module. DTC Code DTC Detection Condition Trouble Area B1552 ...

Other materials:

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE GENERATOR PULLEY (a) Mount the generator assembly in the vise between aluminum plates. NOTICE: Do not overtighten the vise. (b) Install SST 1-A to the generator pulley shaft. Text in Illustration *a Hold Turn ...

Power Source Circuit
DESCRIPTION This circuit provides power to operate the blind spot monitor sensor. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following inspection procedure. PROCEDURE 1. CHECK HARNESS AN ...

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each sy ...