Toyota Tacoma (2015-2018) Service Manual: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION
The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio and display receiver assembly via this circuit.
If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the radio and display receiver assembly, or speakers.
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) |
(a) Disconnect the R31 radio and display receiver assembly connector.
(b) Disconnect the N3 No. 1 stereo jack adapter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R31-25 (ADPG) - N3-8 (AUXO) |
Always |
Below 1 Ω |
|
R31-26 (VAR+) - N3-5 (ARO) |
Always |
Below 1 Ω |
|
R31-28 (VAL+) - N3-6 (ALO) |
Always |
Below 1 Ω |
|
R31-27 (VA-) - N3-7 (ASGN) |
Always |
Below 1 Ω |
|
R31-11 (AGND) - N3-9 (AGND) |
Always |
Below 1 Ω |
|
R31-25 (ADPG) - Body ground |
Always |
10 kΩ or higher |
|
R31-26 (VAR+) - Body ground |
Always |
10 kΩ or higher |
|
R31-28 (VAL+) - Body ground |
Always |
10 kΩ or higher |
|
R31-27 (VA-) - Body ground |
Always |
10 kΩ or higher |
|
R31-11 (AGND) - Body ground |
Always |
10 kΩ or higher |
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Speaker Circuit
DESCRIPTION
If there is a short in a speaker circuit, the radio and display receiver
assembly detects it and stops output to the speakers.
Thus sound cannot be heard from the speakers ...
Data Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION
The No. 1 stereo jack adapter assembly sends the sound data signal or image data
signal from a USB device to the radio and display receiver assembly via this circuit.
WIRING DIAGRAM
...
Other materials:
Data List / Active Test
DATA LIST / ACTIVE TEST
1. 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 signals ...
HD Radio Tuner Malfunction (B1551,B15A0,B15AD,B15B0,B15B3,B15B4,B15B7)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the navigation receiver assembly.
DTC No.
DTC Detection Condition
Trouble Area
B1551
When one of the conditions below is met:
"HD Radio" tuner decoder ...
System Description
SYSTEM DESCRIPTION
1. FRONT SEAT HEATER
(a) By operating the seat heater switch on the air conditioning control assembly,
the temperature can be controlled within the range of 36 to 42.2°C (96 to 108°F).
(b) The on/off status and heater level of each seat heater are indicated by the
respect ...
