Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Stereo Jack Adapter Light does not Illuminate

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System (for 12.3 Inch Display) / Stereo Jack Adapter Light does not Illuminate

DESCRIPTION

Power is supplied to the No. 1 stereo jack adapter assembly illumination from the radio receiver assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

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PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (NO. 1 STEREO JACK ADAPTER ASSEMBLY ILLUMINATION POWER SOURCE)

(a) Disconnect the J170 and J152 No. 1 stereo jack adapter assembly connectors.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

J170-1 (UPI) - Body ground

Engine switch on (ACC)

5 V

J152-8 (ACC) - Body ground

Engine switch on (ACC)

11 to 14 V

*a

Front view of wire harness connector

(to No. 1 Stereo Jack Adapter Assembly)
OK

REPLACE NO. 1 STEREO JACK ADAPTER ASSEMBLY

NG

2.

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

(a) Disconnect the J169 radio receiver assembly connector.

(b) Disconnect the J170 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

J170-1 (UPI) - J169-1 (USV1)

Always

Below 1 Ω

J170-1 (UPI) or J169-1 (USV1) - Body ground

Always

10 kΩ or higher

*a

Front view of wire harness connector

(to Radio Receiver Assembly)

*b

Front view of wire harness connector

(to No. 1 Stereo Jack Adapter Assembly)
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

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

(a) Disconnect the J148 radio receiver assembly connector.

(b) Disconnect the J152 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

J148-16 (ACC) - J152-8 (ACC)

Always

Below 1 Ω

J148-16 (ACC) or J152-8 (ACC) - Body ground

Always

10 kΩ or higher
OK

REPLACE RADIO RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
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