Toyota Avalon Service & Repair Manual: Input / Output Signal Circuit

DESCRIPTION

The stereo component equalizer assembly uses this circuit to send and receive signals to and from the stereo component assembly.

WIRING DIAGRAM

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT EQUALIZER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)

(a) Disconnect the G68 stereo component equalizer assembly connector.

(b) Disconnect the G69 stereo component amplifier assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G68-12 (CH1+) - G69-8 (AN1+)

Always

Below 1 Ω

G68-26 (CH1-) - G69-16 (AN1-)

Always

Below 1 Ω

G68-11 (CH2+) - G69-7 (AN2+)

Always

Below 1 Ω

G68-25 (CH2-) - G69-15 (AN2-)

Always

Below 1 Ω

G68-10 (CH3+) - G69-6 (AN3+)

Always

Below 1 Ω

G68-24 (CH3-) - G69-14 (AN3-)

Always

Below 1 Ω

G69-13 (ASG1) - Body ground

Always

10 kΩ or higher

G68-17 (ACNT) - G69-3 (ACNT)

Always

Below 1 Ω

G68-12 (CH1+) or G69-8 (AN1+) - Body ground

Always

10 kΩ or higher

G68-26 (CH1-) or G69-16 (AN1-) - Body ground

Always

10 kΩ or higher

G68-11 (CH2+) or G69-7 (AN2+) - Body ground

Always

10 kΩ or higher

G68-25 (CH2-) or G69-15 (AN2-) - Body ground

Always

10 kΩ or higher

G68-10 (CH3+) or G69-6 (AN3+) - Body ground

Always

10 kΩ or higher

G68-24 (CH3-) or G69-14 (AN3-) - Body ground

Always

10 kΩ or higher

G68-17 (ACNT) or G69-3 (ACNT) - 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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