Toyota Tundra Service Manual: Sound Signal Circuit between Navigation Receiver Assembly and Stereo Jack Adapter

Toyota Tundra Service Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System / Sound Signal Circuit between Navigation Receiver Assembly 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.

The sound signal that has been sent is amplified by the navigation receiver 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 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 J135 navigation receiver assembly connector.

(b) Disconnect the J100 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

J135-25 (ADPG) - J100-9 (AUXO)

Always

Below 1 Ω

J135-26 (VAR+) - J100-6 (ARO)

Always

Below 1 Ω

J135-28 (VAL+) - J100-7 (ALO)

Always

Below 1 Ω

J135-27 (VA-) - J100-8 (ASGN)

Always

Below 1 Ω

J135-11 (AGND) - J100-10 (AGND)

Always

Below 1 Ω

J135-25 (ADPG) - Body ground

Always

10 kΩ or higher

J135-26 (VAR+) - Body ground

Always

10 kΩ or higher

J135-28 (VAL+) - Body ground

Always

10 kΩ or higher

J135-27 (VA-) - Body ground

Always

10 kΩ or higher

J135-11 (AGND) - 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
    Sound Signal Circuit between Navigation Receiver Assembly and Stereo Component Amplifier

    Speaker Circuit

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