DTC B15FE: XM Tuner Antenna Disconnected; DTC B15FF: XM Tuner Antenna Short [11/2020 - 12/2022]: Procedure

1. Check if the telephone antenna assembly cable is securely connected to the radio and display receiver assembly.

   OK

   Telephone antenna assembly cable is securely connected.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

SECURELY CONNECT TELEPHONE ANTENNA ASSEMBLY CABLE 

Result: 

OK 

See step  2

Pre-procedure1

1. Clear the DTCs.

   Body Electrical > Navigation System > Clear DTCs 

   Procedure1

2. Recheck for DTCs and check that no DTCs are output.

   Body Electrical > Navigation System > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

   Post-procedure1

3. None

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - ] 

Result: 

B 

See step  3

Pre-procedure1

1. Disconnect the antenna connector from the telephone antenna assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Telephone Antenna Assembly)
   *b	Front view of wire harness connector (to Antenna Cord Sub-assembly)

2. Disconnect the antenna connector from the antenna cord sub-assembly.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A-3 - B-1	Always	Below 1 Ω
   A-3a - B-1a	Always	Below 1 Ω
   A-3 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [11/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 12/2022] 

Result: 

OK 

See step  4

Pre-procedure1

1. Disconnect the antenna connector from the No. 2 antenna cord sub-assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to No. 2 Antenna Cord Sub-assembly)
   *b	Front view of wire harness connector (to Radio and Display Receiver Assembly)

2. Disconnect the antenna connector from the radio and display receiver assembly.

   Post-procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B-1 - XM-1 (SXM)	Always	Below 1 Ω
   B-1a - XM-1a	Always	Below 1 Ω
   B-1 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Procedure1

4. None

Result: 

NG 

REPLACE ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [11/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 12/2022] 

Result: 

OK 

See step  5

1. Replace the telephone antenna assembly with a new or known good one and check if the same problem occurs again.

   HINT: 

   Refer to REMOVAL [11/2020 - 11/2021] , or refer to REMOVAL [11/2021 - 12/2022]

   OK

   Malfunction disappears.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (TELEPHONE ANTENNA ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [11/2020 - 12/2022]