DTC B15C1-11: GNSS Antenna Circuit Short to Ground; DTC B15C1-13: GNSS Antenna Circuit Open [10/2022 - ]: Procedure

Pre-procedure1

1. Turn the ignition switch to ON and wait for 10 seconds.

   Procedure1

2. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

   Result

   Proceed to
   NEXT

   Post-procedure1

3. None

Result: 

NEXT 

See step  2

1. Check for DTCs.

   Body Electrical > Telematics > 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 [11/2018 - ] 

Result: 

B 

See step  3

Refer to INSPECTION [10/2022 - ]

Result

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA (NAVIGATION ANTENNA ASSEMBLY). Refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

OK 

See step  4

Pre-procedure1

1. Disconnect the antenna connector from the telephone and GPS antenna (navigation antenna assembly).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of antenna cord sub-assembly connector (to Telephone and GPS Antenna [Navigation Antenna Assembly])
   *b	Front view of antenna cord sub-assembly connector (to Telephone and GPS Antenna Cord [No. 2 Antenna Cord Sub-assembly])

2. Disconnect the antenna connector from the telephone and GPS antenna cord (No. 2 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 TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

OK 

See step  5

Pre-procedure1

1. Disconnect the antenna connector from the telephone and GPS antenna cord (antenna cord sub-assembly).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Telephone and GPS Antenna Cord [Antenna Cord Sub-assembly])
   *b	Front view of wire harness connector (to DCM [Telematics Transceiver])

2. Disconnect the antenna connector from the DCM (telematics transceiver) connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B-1 - ANT2-1	Always	Below 1 Ω
   B-1a - ANT2-1a	Always	Below 1 Ω
   B-1 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [10/2022 - ] 

Result: 

OK 

See step  6

1. Replace the DCM (telematics transceiver).

   HINT: 

   Refer to REMOVAL [10/2022 - ]

   NOTE:

   • The ignition switch must be off.
   • Do not exchange the DCM (telematics transceiver) with one from another vehicle.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [10/2022 - ]