Toyota Venza: AV Signal Stoppage (Low Battery Voltage) (B158F)

Toyota Venza Service Manual / Audio / Video / Audio And Visual System / AV Signal Stoppage (Low Battery Voltage) (B158F)

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.	DTC Detection Condition	Trouble Area
B158F	A video or audio signal is interrupted when the battery voltage drops	Radio and display receiver assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.	CHECK VEHICLE SIGNAL (OPERATION CHECK)

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

(b) Measure the battery voltage.

Standard Voltage:

11 to 14 V

HINT:

This display is updated once per second.

GO TO STEP 3

CHECK DTC

(a) Clear the DTCs (See page ).

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

OK:

No DTCs are output.

END

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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

(a) Disconnect the E4 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
E4-4 (+B1) - Body ground	Always	11 to 14 V

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

XM Tuner Malfunction (B15BA)

DESCRIPTION These DTCs are stored when a malfunction occurs in the stereo component tuner assembly. DTC No. DTC Detection Condition Trouble Area B ...

Voice Recognition Microphone Disconnected (B1579)

DESCRIPTION The radio and display receiver assembly and inner rear view mirror assembly (amplifier microphone assembly) are connected to each other using the microphone connection detection signa ...

Other materials about Toyota Venza:

Lost Communication with Front Airbag Sensor RH (B1612/83,B1613/83)
DESCRIPTION The front airbag sensor RH circuit consists of the center airbag sensor assembly and front airbag sensor RH. The front airbag sensor RH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the ...

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" ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the ''See page'' below. Front Power Seat Control System (w/ Memory) ...