DTC B15C0: GPS Antenna Connection Malfunction(short); DTC B15C1: GPS Antenna Connection Malfunction(break) [11/2018 - 10/2022]: Procedure

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CHECK DTC

Clear the DTCs.
Refer to DTC CHECK / CLEAR [11/2018 - 10/2019] , or refer to DTC CHECK / CLEAR [10/2019 - 10/2022]

Body Electrical > Navigation System > Clear DTCs

Recheck for DTCs and check that no DTCs are output.

Refer to DTC CHECK / CLEAR [11/2018 - 10/2019] , or refer to DTC CHECK / CLEAR [10/2019 - 10/2022]

Body Electrical > Navigation System > Trouble Codes

No DTCs are output.

Result

Proceed to
OK
NG

Result:

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]

Result:

See step 2

INSPECT NAVIGATION ANTENNA ASSEMBLY

Remove the navigation antenna assembly.
Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022]

Inspect the navigation antenna assembly.

Refer to INSPECTION [11/2018 - 10/2022]

Result

Proceed to
OK
NG

Result:

REPLACE NAVIGATION ANTENNA ASSEMBLY. Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022]

Result:

See step 3

CHECK ANTENNA CORD SUB-ASSEMBLY

Disconnect the antenna connector from the navigation antenna assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

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

Standard Resistance

Tester Connection	Condition	Specified Condition
A-3 - B-6	Always	Below 1 Ω
A-3a - B-6a	Always	Below 1 Ω
A-3 - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPLACE ANTENNA CORD SUB-ASSEMBLY. Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022]

Result:

See step 4

CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

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

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

Disconnect the antenna connector from the navigation ECU.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
B-6 - C-1 (GPS)	Always	Below 1 Ω
B-6a - C-1a	Always	Below 1 Ω
B-6 - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPLACE NAVIGATION ECU. Refer to REMOVAL [11/2018 - 10/2019] , or refer to REMOVAL [10/2019 - 10/2022]

Result:

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY. Refer to REMOVAL [11/2018 - 10/2019] , or refer to REMOVAL [10/2019 - 10/2022]