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

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Navigation / Multi Info Display / Navigation 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 navigation receiver assembly dropping temporarily.

DTC No.	DTC Detection Condition	Trouble Area
B158F	A video or audio signal is interrupted when the battery voltage drops.	Navigation receiver assembly Harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

After replacing the navigation receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.
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) Check 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 if the same DTC are output again.

OK:

No DTCs are output.

USE SIMULATION METHOD TO CHECK

REPLACE NAVIGATION RECEIVER ASSEMBLY

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

(a) Disconnect the G6 navigation receiver assembly connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
G6-4 (B) - Body ground	Always	11 to 14 V

REPLACE NAVIGATION RECEIVER ASSEMBLY

REPAIR OR REPLACE HARNESS AND CONNECTOR

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