Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001ATR8
Model Year Start: 2019 Model: Avalon Prod Date Range: [04/2018 -           ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Gasoline Model): B158F; AV Signal Stoppage (Low Battery Voltage); 2019 - 2022 MY Avalon [04/2018 -        ]

DTC

B158F

AV Signal Stoppage (Low Battery Voltage)

DESCRIPTION

This DTC is stored when a video or audio signal is interrupted due to battery voltage input to the radio and display receiver assembly dropping temporarily.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B158F

AV Signal Stoppage (Low Battery Voltage)

A video or audio signal is interrupted when the battery voltage drops
  • Radio and display receiver assembly
  • Harness or connector

WIRING DIAGRAM

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.

    Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Gasoline Model): PRECAUTION 2022 MY Avalon [08/2021 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Gasoline Model): PRECAUTION

  • When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC may be stored.
    • The radio and display receiver assembly may not operate normally.
  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK VEHICLE SIGNAL (OPERATION CHECK)

(a) Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check.

Click here 2019 - 2020 MY Avalon [04/2018 - 08/2020]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Gasoline Model): OPERATION CHECK 2021 - 2022 MY Avalon [08/2020 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Gasoline Model): OPERATION CHECK

(b) Measure the battery voltage.

Standard Voltage:

11 to 14 V

HINT:

This display is updated once per second.

NG

GO TO STEP 3

OK

2.

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.

OK

END
NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

3.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY POWER SOURCE)

(a) Disconnect the G3 radio and display receiver assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

G3-4 (+B1) - Body ground

Always

11 to 14 V
OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR