Toyota Tacoma (2015-2018) Service Manual: 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. |
|
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.
| NG | .gif) |
GO TO STEP 3 |
|
.gif)
|
2. |
CHECK FOR DTC |
(a) Clear the DTCs (See page .gif)
).
(b) Check for DTCs (See page ).
OK:
No DTCs are output.
| OK | |
USE SIMULATION METHOD TO CHECK |
| NG | |
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 |
|
*a |
Front view of wire harness connector (to Radio and Display Receiver Assembly) |
| OK | |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
| NG | |
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:
Data List / Active Test
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful because intermittent conditions or sig ...
Cargo Light Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) receives a cargo light information
signal from the deck light switch assembly and door courtesy light switch, and illuminates
the cargo light.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits r ...
Portable Player cannot be Connected Manually/Automatically
CAUTION / NOTICE / HINT
HINT:
Some versions of "Bluetooth" compatible audio players may not function, or the
function may be limited using the navigation receiver assembly, even if the portable
audio player itself can play files (See page ).
PROCEDURE
1.
CHE ...
