DTC B15C1-11: GNSS Antenna Circuit Short to Ground; DTC B15C1-13: GNSS Antenna Circuit Open [09/2020 - ]: Procedure

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and wait for 10 seconds or more.
4. Turn the Techstream on.
5. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

6. 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 [09/2020 - 01/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [01/2023 - ] 

Result: 

NG 

See step  2

1. Disconnect the I telephone and GPS antenna cord (No. 5 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. 5 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))

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I-2 - H-5	Always	Below 1 Ω
   I-2 or H-5 - Body ground	Always	10 kΩ or higher
   I-2a - H-5a	Always	Below 1 Ω
   I-2a or H-5a - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 5 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [09/2014 - ] 

Result: 

OK 

See step  3

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly))

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (No. 2 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-5 - K-2	Always	Below 1 Ω
   G-5 or K-2 - Body ground	Always	10 kΩ or higher
   G-5a - K-2a	Always	Below 1 Ω
   G-5a or K-2a - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY). Refer to  REMOVAL [09/2014 - ] 

Result: 

OK 

See step  4

1. Disconnect the O137 telephone and GPS antenna cord (floor wire) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (Foor Wire))

2. Disconnect the O180 telephone and GPS antenna cord (floor wire) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Telephone and GPS Antenna Cord (Foor Wire))

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O137-2 (GPS) - O180-1 (GPS)	Always	Below 1 Ω
   O137-2 (GPS) or O180-1 (GPS) - Body ground	Always	10 kΩ or higher
   O137-2a - O180-1a	Always	Below 1 Ω
   O137-2a or O180-1a - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA CORD (FLOOR WIRE). Refer to  REMOVAL [09/2014 - ] 

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 [09/2014 - ]

   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 [09/2020 - ]

   NOTE:

   • The engine 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 [09/2020 - ]