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.

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

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Navigation Receiver Assembly Power Source Circuit

No Sound can be Heard from Speakers

See More:

Toyota Tundra Owners Manual > Do-it-yourself maintenance: Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections. Items Parts and tools Battery condition Warm water Baking soda Grease Conventional wrench (for terminal clamp bolts) Brake fluid level FMVSS No.116 DOT 3 or SAE J1703 brake fluid Rag o ...