Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: Radio Receiver Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the radio and display receiver assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)

(a) Disconnect the radio and display receiver assembly connectors.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

R30-7 (GND1) - Body ground

Always

Below 1 Ω

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

R30-4 (+B1) - R30-7 (GND1)

Always

11 to 14 V

R30-3 (ACC1) - R30-7 (GND1)

Ignition switch ACC

11 to 14 V

R31-1 (IG) - R30-7 (GND1)

Ignition switch ON

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Microphone Circuit between Microphone and Radio Receiver
DESCRIPTION The radio and display receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines. Using this circuit, the ra ...

Front Door Speaker
...

Other materials:

If your vehicle overheats
The following may indicate that your vehicle is overheating. ● The needle of the engine coolant temperature gauge (→P. 155) enters the red zone or a loss of engine power is experienced. (For example, the vehicle speed does not increase.) ● Steam comes out from under the hood. ...

Off-road precautions (4WD models and PreRunner)
This vehicle has higher ground clearance and narrower tread in relation to the height of its center of gravity to make it capable of performing in a wide variety of off-road applications. Off-road vehicle feature ● Specific design characteristics give it a higher center of gravity than o ...

System Diagram
SYSTEM DIAGRAM HINT: Each tire pressure warning valve and transmitter sends its transmitter ID, temperature and tire pressure information to the tire pressure warning ECU and receiver. Transmitting ECU (Transmitter) Receiving ECU Signal Communicat ...

© 2011-2024 Copyright www.ttguide.net