Toyota Tundra Service Manual: Navigation Voice Circuit

Toyota Tundra Service Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System / Navigation Voice Circuit

DESCRIPTION

This circuit is used when the voice guidance in the navigation system is on or an incoming cellular phone voice in the "Bluetooth" hands-free system is heard.

Using this circuit, the navigation receiver assembly sends the signals to the stereo component amplifier assembly.

WIRING DIAGRAM

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY- STEREO COMPONENT AMPLIFIER ASSEMBLY)

(a) Disconnect the J134 navigation receiver assembly connector.

(b) Disconnect the J141 stereo component amplifier connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J141-23 (II1+) - J134-2 (RL+)

Always

Below 1 Ω

J141-22 (II1-) - J134-6 (RL-)

Always

Below 1 Ω

J141-23 (II1+) - Body ground

Always

10 kΩ or higher

J141-22 (II1-) - Body ground

Always

10 kΩ or higher

J141-6 (SLD) - Body ground

Always

10 kΩ or higher
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
    Navigation Receiver Assembly Power Source Circuit

    No Sound can be Heard from Speakers

    See More:

    Toyota Tundra Service Manual > Navigation System: Cursor or Map Rotates when Vehicle Stopped
    PROCEDURE 1. CHECK CONDITION (a) Check with the customer if the vehicle has been turned by a turntable. OK: Vehicle has not been turned by a turntable. HINT: If the vehicle is turned on a turntable with the ignition switch to ON, the system may store the angular velocity. As a result, the vehicle po ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2025 Copyright www.ttundra.com
    0.0324