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 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. |
|
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 |
|
.png)
(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 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 |
|
*a |
Front view of wire harness connector (to Navigation Receiver Assembly) |
| OK | |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
| NG | |
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:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
VSC System
DTC Code
Detection Item
See page
C1201
Engine Control System Malfunction
C1203
ECM Communication Circuit Malfunction
C120B
...
Clearance Warning Ecu
Components
COMPONENTS
ILLUSTRATION
Installation
INSTALLATION
PROCEDURE
1. INSTALL CLEARANCE WARNING ECU ASSEMBLY
(a) Connect the connector.
(b) Engage the 2 guides to install the clearance warning ECU assembly.
(c) Install the 2 screws.
2. INSTALL AIR CONDITIONING CONTROL ASSEMBLY (f ...
Road Test
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the
symptoms. If the problem is that the transmission does not shift up or down, or
that the shift point is too high or too low, conduct the following road test referring
to t ...
