Toyota Tacoma (2015-2018) Service Manual: Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION
The navigation receiver assembly sends a sound signal to the stereo component amplifier assembly via this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assembly, and then is sent to the speakers.
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 stereo component amplifier assembly or speakers.
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) |
(a) Disconnect the N23 and N24 navigation receiver assembly connector.
(b) Disconnect the S23 stereo component amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S23-3 (L+) - N24-2 (FL+) |
Always |
Below 1 Ω |
|
S23-2 (L-) - N24-6 (FL-) |
Always |
Below 1 Ω |
|
S23-5 (R+) - N24-1 (FR+) |
Always |
Below 1 Ω |
|
S23-4 (R-) - N24-5 (FR-) |
Always |
Below 1 Ω |
|
S23-3 (L+) - Body ground |
Always |
10 kΩ or higher |
|
S23-2 (L-) - Body ground |
Always |
10 kΩ or higher |
|
S23-5 (R+) - Body ground |
Always |
10 kΩ or higher |
|
S23-4 (R-) - Body ground |
Always |
10 kΩ or higher |
|
N23-4 (SLD2) - 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 stereo component amplifier assembly*1
or navigation receiver assembly*2 detects it and stops output to the speakers.
Thus sound cannot be ...
Data Signal Circuit between Stereo Jack Adapter and Extension Module
DESCRIPTION
The No. 1 stereo jack adapter assembly sends the sound data signal or image data
signal from a USB device to the navigation receiver assembly via this circuit.
WIRING DIAGRAM
PROCED ...
Other materials:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is displayed during the DTC check, inspect the trouble areas
listed for that code. For details of the code, refer to the "See page" below.
Seat Heater System
DTC Code
Detection Item
See page
...
Installation
INSTALLATION
PROCEDURE
1. INSTALL FRONT BUMPER ASSEMBLY
(a) w/ Fog Light:
(1) Connect the 2 connectors.
(b) Engage the 3 claws and guide to install the front bumper assembly.
(c) Remove the protective tape.
(d) Install the 6 clips.
(e) Engage the clamp.
(f) Connect the connector.
(g) Insta ...
Road Test
ROAD TEST
PROBLEM SYMPTOM CONFIRMATION
HINT:
The dynamic radar cruise control system has 2 cruise control modes:
constant speed control mode and vehicle-to-vehicle distance control mode.
Vehicle-to-vehicle distance control mode is selected by default when
the dyna ...
