Toyota Tundra Service Manual: HD Radio Tuner Malfunction (B1551,B15A0,B15AD,B15B0,B15B3,B15B4,B15B7)

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 of the conditions 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:

• Mechanical communication error
• Load/Eject malfunction
• Read malfunction
• Mechanical malfunction

B15B7

"Bluetooth" module malfunction

1.

CHECK FOR DTC

OK

A

NG (for Column Shift Type)

B

NG (for Floor Shift Type)

C

USE SIMULATION METHOD TO CHECK

REPLACE NAVIGATION RECEIVER ASSEMBLY

REPLACE NAVIGATION RECEIVER ASSEMBLY