DTC B1547-11: GNSS Antenna Circuit Short to Ground; DTC B1547-13: GNSS Antenna Circuit Open [11/2024 - ]: Procedure

1. Check vehicle specification.

   Result

   Result	Proceed to
   w/o Telematics System	A
   w/ Telematics System	B

Result: 

B 

See step  4

Result: 

A 

See step  2

Refer to INSPECTION [11/2024 - ]

Result

Result: 

NG 

REPLACE NAVIGATION ANTENNA ASSEMBLY 

Refer to REMOVAL [11/2023 - ]

Result: 

OK 

See step  3

1. Disconnect the navigation antenna assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of No. 2 antenna cord sub-assembly connector (to Navigation Antenna Assembly)

2. Disconnect the radio and display receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of No. 2 antenna cord sub-assembly connector (to Radio and Display Receiver assembly)

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

   Standard Resistance

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

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

Refer to REMOVAL [11/2023 - ]

Result: 

NG 

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY 

Refer to REMOVAL [11/2024 - ]

Refer to INSPECTION [11/2024 - ]

Result

Result: 

NG 

REPLACE NAVIGATION ANTENNA ASSEMBLY 

Refer to REMOVAL [11/2023 - ]

Result: 

OK 

See step  5

1. Disconnect the navigation antenna assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of No. 2 antenna cord sub-assembly connector (to Navigation Antenna Assembly)

2. Disconnect the radio and display receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of No. 2 antenna cord sub-assembly connector (to Radio and Display Receiver assembly)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D-2 - A-1	Always	Below 1 Ω
   D-2a - A-1a	Always	Below 1 Ω
   D-2a or A-1a - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

Refer to REMOVAL [11/2023 - ]

Result: 

NG 

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY 

Refer to REMOVAL [11/2024 - ]