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

Toyota Tacoma (2015-2018) Service Manual / 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 Code	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:

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 NAVIGATION RECEIVER ASSEMBLY

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

(a) Disconnect the navigation receiver assembly connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
N24-4 (+B1) - Body ground	Always	11 to 14 V

Text in Illustration

*a	Front view of wire harness connector (to Navigation Receiver Assembly)

REPLACE NAVIGATION RECEIVER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

SD Card Communication Malfunction (B158C)

DESCRIPTION The navigation receiver assembly stores this DTC when the SD card cannot be mounted when inserted into the SD card slot. DTC Code DTC Detection Condition ...

Stereo Component Amplifier Malfunction (B15A3)

DESCRIPTION This DTC is stored when a malfunction occurs in the stereo component amplifier assembly. DTC No. DTC Detection Condition Trouble Area ...

Other materials:

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for Automatic Air Conditioning) (See page ) 2. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for Manual Air Conditioning) (See page ) 3. CHECK AIR CONDITIONING CONTROL ASSEMBLY (for Automatic Air Conditioning) (See page ) 4. CHECK ...

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" column of the table. Check each symptom by check ...

Removal
REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE FRONT WHEEL 2. REMOVE NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY 3. SEPARATE FRONT STABILIZER LINK ASSEMBLY LH ...