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:
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Check for DTCs, and then write them down.
(f) Check the details of the DTCs (See page ...
Removal
REMOVAL
PROCEDURE
1. REMOVE AIR CONDITIONING CONTROL ASSEMBLY (for Automatic Air Conditioning System)
(See page )
2. REMOVE INTEGRATION PANEL SUB-ASSEMBLY (for Manual Cooler System)
(See page )
3. REMOVE TRANSFER POSITION SWITCH
(a) Detach the 2 claws to remove the transfer pos ...
Meter Illumination does not Dim at Night
DESCRIPTION
In this circuit, the combination meter assembly auto dimmer signals from the
main body ECU using the CAN communication system (CAN V1 Bus). When the combination
meter assembly an auto dimmer signal, it dims the meter illumination (warning and
indicator lights). The main body ECU ( ...
