DTC B15FE-11: XM Tuner Antenna Circuit Short to Ground; DTC B15FE-13: XM Tuner Antenna Circuit Open [10/2022 - ]: Procedure

1. Check if the roof antenna assembly cable is securely connected to the radio receiver assembly.

   OK

   Roof antenna assembly cable is securely connected.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

SECURELY CONNECT ROOF ANTENNA ASSEMBLY CABLE 

Result: 

OK 

See step  2

1. Clear the DTCs.

   Body Electrical > Navigation System > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check for DTCs.

   Body Electrical > Navigation System > Trouble Codes 

   Result

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

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

Result: 

B 

See step  4

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Roof Antenna Assembly)
   *b	Front view of wire harness connector (to No. 4 Antenna Cord Sub-assembly)

2. Disconnect the antenna connector from the No. 4 antenna cord sub-assembly.
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
   A-3a - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ANTENNA CORD SUB-ASSEMBLY (FLOOR). Refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

OK 

See step  5

1. Disconnect the antenna connector from the antenna cord sub-assembly (floor).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Antenna Cord Sub-assembly [Floor])
   *b	Front view of wire harness connector (to Radio Receiver Assembly)

2. Disconnect the antenna connector from the radio receiver assembly.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

OK 

See step  6

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

   Refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Clear the DTCs.

   Body Electrical > Navigation System > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

1. Check for DTCs.

   Body Electrical > Navigation System > Trouble Codes 

   Result

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

Result: 

A 

END (ROOF ANTENNA ASSEMBLY IS DEFECTIVE) 

Result: 

B 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2022 - ]