Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

Toyota Tacoma (2015-2018) Service Manual / Navigation / Multi Info Display / Navigation System / 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

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

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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