Lexus NX: XM Tuner Antenna Disconnected (B15FE,B15FF)

DESCRIPTION

These DTCs are stored when a malfunction occurs in the roof antenna assembly which is connected to the radio receiver assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15FE

XM Tuner Antenna Disconnected

The roof antenna assembly is not connected.

  • No. 1 antenna cord sub-assembly
  • No. 2 antenna cord sub-assembly
  • No. 4 antenna cord sub-assembly
  • Roof antenna assembly
  • Radio receiver assembly

B15FF

XM Tuner Antenna Short

A short occurs in the roof antenna assembly.

  • No. 1 antenna cord sub-assembly
  • No. 2 antenna cord sub-assembly
  • No. 4 antenna cord sub-assembly
  • Roof antenna assembly
  • 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 Navigation System.

Click here

PROCEDURE

1.

CHECK CONNECTION OF ANTENNA CABLE

(a) Check if the roof antenna assembly cable is securely connected to the radio receiver assembly.

OK:

Roof antenna assembly cable is securely connected.

NG

SECURELY CONNECT ROOF ANTENNA ASSEMBLY CABLE

OK

2.

CHECK DTC

(a) Clear the DTCs.

Click here

Body Electrical > Navigation System > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Click here

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

3.

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

4.

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

5.

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

6.

CHECK ROOF ANTENNA ASSEMBLY

(a) Replace the roof antenna assembly with a new or known good one.

Click here

(b) Clear the DTCs.

Click here

Body Electrical > Navigation System > Clear DTCs

(c) Recheck for DTCs and check that no DTCs are output.

Click here

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

END (ROOF ANTENNA ASSEMBLY IS DEFECTIVE)

NG

REPLACE RADIO RECEIVER ASSEMBLY

READ NEXT:

 Camera ECU Malfunction (C1610)

DESCRIPTION This DTC is stored when a malfunction occurs in the park assist/monitoring section. DTC No. Detection Item DTC Detection Condition Trouble Area C1610 Camera ECU Malfunction

 Sending Malfunction (Navigation to APGS) (U0073,U0100,U0129,U0140,U0155,U0164,U0198,U023B,U0265,U0293,U1110)

DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit. DTC No. Detection Item DTC Detection Condition Trouble Area U0073 Sending Malfunction (Navi

 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

SEE MORE:

 Certification ECU Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Certification ECU Communication Stop Mode Any of the following conditions are met: Communication stop for "Certification (Smart)" is indicated on the "Communication Bus Check" screen of the Techstream. Click here Communication sys

 Buzzer Circuit Short to Ground or Open (C1A4A14)

DESCRIPTION If the forward recognition camera detects an open or short to ground in the buzzer circuit, it will store DTC C1A4A14. DTC No. Detection Item DTC Detection Condition Trouble Area C1A4A14 Buzzer Circuit Short to Ground or Open The forward recognition camera detects an ope

© 2016-2024 Copyright www.lexunx.com