Toyota 4Runner: AV Signal Stoppage (Low Battery Voltage) (B158F)

Toyota 4Runner Service Manual / Audio / Visual / Telematics / 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.	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:

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 (See page ).

(b) Measure the battery voltage.

Standard Voltage:

11 to 14 V

GO TO STEP 3

CHECK DTC

(a) Clear the DTCs (See page ).

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

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 G48 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
G48-4 (B) - Body ground	Always	11 to 14 V

Text in Illustration

*a	Front view of wire harness connector (to Radio and Display Receiver Assembly)

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

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