DTC B15C1-11: GNSS Antenna Circuit Short to Ground; DTC B15C113: GNSS Antenna Circuit Open [07/2022 - ]: Procedure

1. Turn the ignition switch to ON and wait for 10 seconds or more.
2. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

3. Check for DTCs and check that no DTCs are output.

   Body Electrical > Telematics > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

Result: 

NG 

See step  2

1. Disconnect the I telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (No. 5 Antenna Cord Sub-assembly))

2. Disconnect the H telephone and GPS antenna cord (No. 4 antenna cord sub-assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (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
   I-2 - H-3	Always	Below 1 Ω
   I-2 or H-3 - Body ground	Always	10 kΩ or higher
   I-2a - H-3a	Always	Below 1 Ω
   I-2a or H-3a - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 4 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [07/2022 - ] 

Result: 

OK 

See step  3

1. Disconnect the G telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))

2. Disconnect the F telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly))

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

   Standard Resistance

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [07/2022 - ] 

Result: 

OK 

See step  4

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly))

2. Disconnect the B telephone and GPS antenna cord (antenna cord sub-assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (Antenna Cord Sub-assembly))

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

   Standard Resistance

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [07/2022 - ] 

Result: 

OK 

See step  5

1. Replace the telephone and GPS antenna assembly (for Roof Side) with a new or known good one.

   Refer to REMOVAL [10/2018 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

2. Recheck for DTCs and check that no DTCs are output.

   Body Electrical > Telematics > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

See step  7

1. Replace the DCM (telematics transceiver) with a new one.

   Refer to REMOVAL [07/2022 - ]

   NOTE:

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

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [07/2022 - ]