GPS module is likely to cease to function when it is connected to an unstable or wrong power source. GPs module is also likely to fail to turn on if incorrect connection is made at one of its I/O port such as TX, RX and 3D-Fix pins.

Double check with our reference design included in the respected data sheet and makes sure the power and configuration is correct.

If the GPS module still remains unresponsive, you can try reviving the GPS module with the force flash method. Please see question “3.14 Firmware cannot be flashed successfully using GlobalTop GPS tool, what’s wrong?” for instruction on force flashing the GPS module. Please contact GlobalTop technical support for more details.