DTC B1547-11: GNSS Antenna Circuit Short to Ground; DTC B1547-13: GNSS Antenna Circuit Open [09/2022 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 300h, 2024 Lexus ES 250, 2023 Lexus ES 350, and 2023 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT NAVIGATION ANTENNA ASSEMBLY
Refer to INSPECTION [08/2021 - ]

Result

Proceed to

OK

NG

Result:

NG

REPLACE NAVIGATION ANTENNA ASSEMBLY. Refer to REMOVAL [09/2022 - ]

Result:

OK

See step 2

INSPECT ANTENNA CORD SUB-ASSEMBLY

Disconnect the navigation antenna assembly connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Front view of antenna cord sub-assembly connector (to Navigation Antenna Assembly)

Disconnect the radio receiver assembly connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Front view of antenna cord sub-assembly connector (to Radio Receiver assembly)

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

Standard Resistance

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

Result

Proceed to
OK
NG

Result:

REPLACE RADIO RECEIVER ASSEMBLY. Refer to REMOVAL [09/2022 - ]

Result:

REPLACE ANTENNA CORD SUB-ASSEMBLY. Refer to REMOVAL [09/2022 - ]