Lexus NX: Stereo Jack Adapter Light does not Illuminate

Lexus NX Service Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System / 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:

When replacing the radio receiver assembly, always replace it with a new one.

If a radio receiver assembly which was installed to another vehicle is used, the following may occur:

  • A communication malfunction DTC may be stored.
  • The radio receiver assembly may not operate normally.

HINT:

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.

Click here

PROCEDURE

1.

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

(a) Disconnect the I166 and I155 No. 1 stereo jack adapter assembly connectors.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

I166-1 (UP1) - Body ground

Power switch on (ACC)

5 V

I155-8 (ACC) - Body ground

Power 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 I151 and I179 radio receiver assembly connectors.

(b) Disconnect the I155 and I166 No. 1 stereo jack adapter assembly connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I151-16 (ACC) - I155-8 (ACC)

Always

Below 1 Ω

I179-1 (USV1) - I166-1 (UP1)

Always

Below 1 Ω

I151-16 (ACC) or I155-8 (ACC) - Body ground

Always

10 kΩ or higher

I179-1 (USV1) or I166-1 (UP1) - Body ground

Always

10 kΩ or higher

OK

REPLACE RADIO RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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