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 navigation 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 stereo component amplifier assembly, navigation receiver assembly or speakers.
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) |
(a) Disconnect the N25 navigation 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 |
|---|---|---|
|
N25-25 (ADPG) - N3-8 (AUXO) |
Always |
Below 1 Ω |
|
N25-26 (VAR+) - N3-5 (ARO) |
Always |
Below 1 Ω |
|
N25-28 (VAL+) - N3-6 (ALO) |
Always |
Below 1 Ω |
|
N25-27 (VA-) - N3-7 (ASGN) |
Always |
Below 1 Ω |
|
N25-11 (AGND) - N3-9 (AGND) |
Always |
Below 1 Ω |
|
N25-25 (ADPG) - Body ground |
Always |
10 kΩ or higher |
|
N25-26 (VAR+) - Body ground |
Always |
10 kΩ or higher |
|
N25-28 (VAL+) - Body ground |
Always |
10 kΩ or higher |
|
N25-27 (VA-) - Body ground |
Always |
10 kΩ or higher |
|
N25-11 (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 |
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 ...
Data Signal Circuit between Navigation Receiver Assembly and Extension Module
DESCRIPTION
The stereo component tuner assembly sends the sound data signal or image data
signal from a device to the navigation receiver assembly via this circuit.
WIRING DIAGRAM
CAUTION / NOT ...
Other materials:
Hydraulic Test
HYDRAULIC TEST
1. PERFORM HYDRAULIC TEST
(a) Measure the line pressure.
CAUTION:
The line pressure test should always be performed with at least 2 people. One
person should observe the condition of the wheels and wheel chocks while the other
is performing the test.
NOTICE:
Perform ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT COOLER CONDENSER ASSEMBLY
(a) If the fins of the cooler condenser assembly are dirty, clean them with water
and dry them with compressed air.
NOTICE:
Do not damage the fins of the condenser assembly.
(b) If the fins of the cooler condenser assembly ...
Pressure Control Solenoid "A" Circuit Open (P074513)
DESCRIPTION
Changing from 1st to 6th is performed by the ECM turning shift solenoid valves
SL1, SL2, SL3 and SL4 on and off. If an open or short circuit occurs in any of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valves
to allow the vehicle to be operated ...
