Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B1415: GPS Antenna Shorted To Ground
| DTC Description | DTC |
|---|---|
| B1415 GPS Antenna Shorted to Ground |
DTC (Telematics System)
Check the connectors for poor connections or loose terminals.
- Problem verification
- 1. Clear the DTCs with the HDS.
- 2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
- 3. Check for DTCs with the HDS.
DTC Description DTC B1415 GPS Antenna Shorted to Ground Is DTC B1415 indicated?
YES
The failure is duplicated, go to step 2.
NO
Intermittent failure, the system is OK at this time.
- Determine possible failure area (GPS antenna, others)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
GPS (Telematics) antenna 2P connector - 3. Turn the vehicle to the ON mode.
- 4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode GPS (Telematics) antenna 2P connector: disconnected Test point 1 GPS (Telematics) antenna 2P connector No. 1 Test point 2 Body ground Is there about 5.0 V?
YES
Replace the GPS (Telematics) antenna .
NO
Go to step 3.
- Shorted wire check (GPS ANT line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Telematics control unit connector C (4P) - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode GPS (Telematics) antenna 2P connector: disconnected Telematics control unit connector C (4P): disconnected Test point 1 Telematics control unit connector C (4P) No. 2 - Refer to: Telematics Control Unit Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) , or Telematics Control Unit Connector for Inputs and Outputs (Without Auto Idle Stop System) (2015-17), or Telematics Control Unit Connector for Inputs and Outputs (2018-19) Test point 2 Body ground Is there continuity?
YES
There is a short to body ground in the wire between the GPS (Telematics) antenna and the telematics control unit. Replace the affected antenna lead.
NO
The GPS ANT wire is not shorted to ground. Go to step 4.
- Shorted wire check (GPS ANT line to GPS SH line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode GPS (Telematics) antenna 2P connector: disconnected Telematics control unit connector C (4P): disconnected Test point 1 Telematics control unit connector C (4P) No. 2 - Refer to: Telematics Control Unit Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) , or Telematics Control Unit Connector for Inputs and Outputs (Without Auto Idle Stop System) (2015-17), or Telematics Control Unit Connector for Inputs and Outputs (2018-19) Test point 2 Telematics control unit connector C (4P) No. 4 - Refer to: Telematics Control Unit Connector For Inputs And Outputs (With Auto Idle Stop System) (2015-17) , or Telematics Control Unit Connector for Inputs and Outputs (Without Auto Idle Stop System) (2015-17), or Telematics Control Unit Connector for Inputs and Outputs (2018-19) Is there continuity?
YES
There is a short in the wires between the GPS (Telematics) antenna and the telematics control unit. Replace the affected antenna lead.
NO
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.