Toyota Tacoma (2015-2018) Service Manual: Radio Broadcast cannot be Received or Poor Reception
PROCEDURE
|
1. |
CHECK NAVIGATION RECEIVER ASSEMBLY |
(a) Check the radio automatic station search function.
(1) Check the radio automatic station search function by activating it.
Result|
Result |
Proceed to |
|---|---|
|
Automatic station search function does not stop |
A |
|
Automatic station search function stops on a station |
B |
| B | .gif) |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
.gif)
|
2. |
CHECK OPTIONAL COMPONENTS |
(a) Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.
Result|
Result |
Proceed to |
|---|---|
|
Optional components are not installed |
A |
|
Optional components are installed |
B |
NOTICE:
Do not remove optional components without the permission of the customer.
| B | |
REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) |
|
|
3. |
CHECK NAVIGATION RECEIVER ASSEMBLY |
|
(a) Preparation for check (1) Remove the antenna connector from the navigation receiver assembly. |
|
.png)
(b) Check for noise
(1) Turn the ignition switch to ACC with the navigation receiver assembly connector connected.
(2) Turn the radio on and tune into AM mode.
(3) Place a screwdriver, thin wire or other metal object on the navigation receiver assembly antenna jack and check that noise can be heard from the speakers.
OK:
Noise can be heard from the speakers.
| NG | |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
|
4. |
INSPECT NAVIGATION RECEIVER ASSEMBLY |
|
(a) Disconnect the navigation receiver assembly connector. |
|
.png)
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
RA-5 (ANT+) - Body ground |
Ignition switch ACC. Radio switch on and FM or AM selected |
11 to 14 V |
|
*a |
Component without harness connected (Navigation Receiver Assembly) |
| NG | |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
|
5. |
REPLACE ANTENNA CORD SUB-ASSEMBLY |
(a) Replace the antenna cord sub-assembly and check if radio broadcasts can be
received normally (See page .gif)
).
OK:
Radio broadcasts can be received normally.
| OK | |
END |
|
|
6. |
REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY |
(a) Replace the antenna assembly with assembly and check if radio broadcasts
can be received normally (See page ).
OK:
Radio broadcasts can be received normally.
| OK | |
END |
|
|
7. |
REPLACE ANTENNA ASSEMBLY WITH HOLDER |
(a) Replace the roof antenna assembly and check if radio broadcasts can be received
normally (See page ).
OK:
Radio broadcasts can be received normally.
| OK | |
END |
| NG | |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
CD Sound Skips
PROCEDURE
1.
CHECK CD
(a) Check that the CD is not deformed or cracked.
OK:
No deformation or cracks on the CD
...
Display does not Dim when Light Control Switch is Turned ON
PROCEDURE
1.
CHECK IMAGE QUALITY SETTING
(a) Display the "Display Settings" screen.
(b) Turn the light control switch to the tail or head position.
(c) Ch ...
Other materials:
ACC Signal Circuit
DESCRIPTION
This circuit detects whether the ignition switch is ACC or off, and sends this
information to the main body ECU (multiplex network body ECU).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing
the fo ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY
(a) Check the operation.
(1) Apply battery voltage between the terminals and check that the plunger
operates.
Text in Illustration
*a
Component without harness con ...
Acceleration Sensor Internal Circuit (C1419,C1435)
DESCRIPTION
The skid control ECU (master cylinder solenoid) receives signals from the yaw
rate and acceleration (airbag sensor assembly) via the CAN communication system.
The airbag sensor assembly has a built-in yaw rate and acceleration sensor and
detects the vehicle's condition using 2 ...
