Lexus ES manuals

Lexus ES: Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System (for Hv Model) / Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

The radio receiver assembly sends a sound signal to the stereo component amplifier assembly via this circuit.

The sound signal that has been sent is amplified by the stereo component amplifier 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 stereo component amplifier assembly or speakers.

WIRING DIAGRAM

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)

(a) Disconnect the G7 radio receiver assembly connector.

(b) Disconnect the G9 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

G7-1 (FR+) - G9-5 (R+)

Always

Below 1 Ω

G7-6 (FR-) - G9-4 (R-)

Always

Below 1 Ω

G7-2 (FL+) - G9-3 (L+)

Always

Below 1 Ω

G7-7 (FL-) - G9-2 (L-)

Always

Below 1 Ω

G9-6 (SLD) - Body ground

Always

10 kΩ or higher

G7-1 (FR+) or G9-5 (R+) - Body ground

Always

10 kΩ or higher

G7-6 (FR-) or G9-4 (R-) - Body ground

Always

10 kΩ or higher

G7-2 (FL+) or G9-3 (L+) - Body ground

Always

10 kΩ or higher

G7-7 (FL-) or G9-2 (L-) - 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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