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:

TC and CG Terminal Circuit
DESCRIPTION Connecting terminals TC and CG of the DLC3 causes the ECU to display the DTC by blinking the ABS warning and slip indicator lights. WIRING DIAGRAM CAUTION / NOTICE / HINT HINT: When the warning lights continue to blink, a ground short in t ...

No Sound can be Heard from Speakers
PROCEDURE 1. CHECK AUDIO SETTINGS (a) In sound setting mode, set volume, fader and balance to the initial values and check that the sound is normal. OK: Audio system returns to normal. HINT: Sound quality adjustment mea ...

Canceling the power back door system (vehicles with power back door)
Turn the main switch to disable the power back door system. 1. Inoperative 2. Operative The back door cannot be operated even with the wireless remote control or power back door switch. A buzzer will sound twice if the power back door switch is pressed ...