Toyota Tacoma (2015-2018) Service Manual: AV Signal Stoppage (Low Battery Voltage) (B158F)

Toyota Tacoma (2015-2018) 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 Code	DTC Detection Condition	Trouble Area
B158F	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) Check that the battery voltage.

Standard voltage:

11 to 14 V

HINT:

This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

GO TO STEP 3

2.	CHECK FOR DTC

(a) Clear the DTCs (See page (b) Check for DTCs (See page ). ).

(b) Check for DTCs (See page OK: ).

OK:

No DTCs are output.

USE SIMULATION METHOD TO CHECK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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

(a) Disconnect the 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
R30-4 (+B1) - 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

USB Device Malfunction (B1585)

DESCRIPTION This DTC is stored when a malfunction occurs in a connected device. DTC No. DTC Detection Condition Trouble Area B1585 USB De ...

Short in GPS Antenna (B15C0,B15C1)

DESCRIPTION These DTCs are stored when a malfunction occurs in the navigation antenna assembly. DTC No. DTC Detection Condition Trouble Area B15C0 ...

Other materials:

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CONNECT TECHSTREAM (a) Warm up the engine. (b) Turn the ignition switch to off. (c) Connect the Techstream to the DLC3. (d) Turn the ignition switch to ON. (e) Turn the Techstream on. (f) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test. 2. ...

Rear Differential Lock Control SW Stuck ON (P17CC)
DESCRIPTION This DTC is output when a malfunction of the differential lock switch is detected. DTC No. Detection Item DTC Detection Condition Trouble Area P17CC Rear Differential Lock Control SW Stuck ON ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT CURTAIN SHIELD AIRBAG ASSEMBLY (for Vehicle not Involved in Collision) (a) Perform a diagnostic system check (See page ). (b) With the curtain shield airbag assembly installed on the vehicle, perform a visual check. If there are any def ...