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 / Audio / Video / Audio And Visual 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 radio and display 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 radio and display receiver assembly, or speakers.

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

(a) Disconnect the R31 radio and display 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

R31-25 (ADPG) - N3-8 (AUXO)

Always

Below 1 Ω

R31-26 (VAR+) - N3-5 (ARO)

Always

Below 1 Ω

R31-28 (VAL+) - N3-6 (ALO)

Always

Below 1 Ω

R31-27 (VA-) - N3-7 (ASGN)

Always

Below 1 Ω

R31-11 (AGND) - N3-9 (AGND)

Always

Below 1 Ω

R31-25 (ADPG) - Body ground

Always

10 kΩ or higher

R31-26 (VAR+) - Body ground

Always

10 kΩ or higher

R31-28 (VAL+) - Body ground

Always

10 kΩ or higher

R31-27 (VA-) - Body ground

Always

10 kΩ or higher

R31-11 (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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