Lexus NX: Satellite Radio Broadcast cannot be Received

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Some satellite radio broadcasts require payment. A contract must be made between a satellite radio company and the user. If the contract expires, it will not be possible to listen to the broadcast.
  • 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 SURROUNDINGS

(a) Check if the vehicle is in an environment where reception is difficult due to something blocking the area above the vehicle.

HINT:

If the area above the vehicle is blocked, such as when in a building or tunnel, reception may not be possible.

*a

Example

*b

In a tunnel

*c

In a building

*d

Under an overpass

*e

On a forest or tree-lined path

*f

Between tall buildings

*g

Under a cliff or overhang

-

-

OK:

Area above vehicle is not blocked.

NG

END (MOVE VEHICLE TO LOCATION WHERE RECEPTION IS BETTER)

OK

2.

CHECK RADIO RECEIVER ASSEMBLY

(a) Check if CH001 (free broadcast) can be received.

OK:

CH001 can be received.

NG

GO TO STEP 6

OK

3.

CHECK DISPLAY SETTING

(a) Check the display screen.

Result

Proceed to

"UNAUTH" is displayed

A

"-----" is displayed

B

None of the displays above are shown

C

B

THERE IS NO SONG/PROGRAM TITLE OR ARTIST NAME/FEATURE ASSOCIATED WITH CHANNEL AT THAT TIME

C

GO TO STEP 6

A

4.

CHECK CONTRACT CONDITIONS

(a) Check if the pay-type contract has been extended, or if the contract period has ended.

OK:

Pay-type contract is valid.

NG

TO RECEIVE PAY-TYPE BROADCASTS, CONTRACT MUST BE MADE WITH SATELLITE RADIO TUNER COMPANY

OK

5.

PERFORM ACTIVATION REFRESH

(a) Perform activation refresh by referring to the satellite radio service website (http://www.siriusxm.com).

HINT:

The Sirius XM radio ID that is necessary to perform activation refresh can be displayed when CH000 is selected on the satellite radio.

OK:

Malfunction disappears.

OK

END

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

6.

CHECK DISPLAY

(a) Check the display screen.

Result

Proceed to

"ANTENNA" is displayed

A

"NO SIGNAL" is displayed

B

"LOADING" is displayed

"OFF AIR" is displayed

C

After "CH UNAVL" is displayed, display automatically switches to CH001

D

None of the displays above are shown

E

B

END (MOVE VEHICLE TO LOCATION WHERE RECEPTION IS BETTER)

C

CHANNEL IS CURRENTLY NOT BEING BROADCAST. BROADCAST CAN BE LISTENED TO OR VIEWED WHEN IT IS BACK ON AIR (CONFIRM WITH RADIO STATION)

D

CHANNEL BROADCAST HAS ENDED (CONFIRM WITH RADIO STATION)

E

GO TO STEP 11

A

7.

CHECK NO. 4 ANTENNA CORD SUB-ASSEMBLY

(a) Disconnect the antenna connector from the roof antenna assembly.

*a

Front view of wire harness connector

(to Roof Antenna Assembly)

*b

Front view of wire harness connector

(to No. 2 Antenna Cord Sub-assembly)

(b) Disconnect the antenna connector from the No. 2 antenna cord sub-assembly.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A-3 - B-3

Always

Below 1 Ω

A-3a - B-3a

Always

Below 1 Ω

A-3 - Body ground

Always

10 kΩ or higher

A-3a - Body ground

Always

10 kΩ or higher

NG

REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY

OK

8.

CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

(a) Disconnect the antenna connector from the No. 4 antenna cord sub-assembly.

*a

Front view of wire harness connector

(to No. 4 Antenna Cord Sub-assembly)

*b

Front view of wire harness connector

(to No. 1 Antenna Cord Sub-assembly)

(b) Disconnect the antenna connector from the No. 1 antenna cord sub-assembly.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

B-3 - C-3

Always

Below 1 Ω

B-3a - C-3a

Always

Below 1 Ω

B-3 - Body ground

Always

10 kΩ or higher

B-3a - Body ground

Always

10 kΩ or higher

NG

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY

OK

9.

CHECK NO. 1 ANTENNA CORD SUB-ASSEMBLY

(a) Disconnect the antenna connector from the No. 2 antenna cord sub-assembly.

*a

Front view of wire harness connector

(to No. 2 Antenna Cord Sub-assembly)

*b

Front view of wire harness connector

(to Radio Receiver Assembly)

(b) Disconnect the antenna connector from the radio receiver assembly.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C-3 - D-1 (SXM)

Always

Below 1 Ω

C-3a - D-1a

Always

Below 1 Ω

C-3 - Body ground

Always

10 kΩ or higher

C-3a - Body ground

Always

10 kΩ or higher

NG

REPLACE NO. 1 ANTENNA CORD SUB-ASSEMBLY

OK

10.

CHECK ROOF ANTENNA ASSEMBLY

(a) Replace the roof antenna assembly with a new or known good one and check if the same problem occurs again.

Click here

OK:

Malfunction disappears.

OK

END (ROOF ANTENNA ASSEMBLY IS DEFECTIVE)

NG

REPLACE RADIO RECEIVER ASSEMBLY

11.

CONFIRM CURRENTLY SELECTED CHANNEL

(a) Confirm if CH000 is currently selected.

OK:

CH000 is selected

OK

END (CH000 HAS NO SOUND. SELECT ANOTHER CHANNEL)

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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