T373A & T373B User Manual
8.Common Problems
8.1 Device connected with car but no working.
Check the OBDII interface of car if has power output and with sufficient
voltage.
Check if device connected with Car OBD II port stability.
Check if the device in “Power down” status caused by “Power down”
parameter of the device set error.
8.2 3G/WCDMA network cannot registration
Check if the device at a 3G/WCDMA/GSM network signal area.
Check the USIM card insert done or overdue payment.
Check if closed 3G module function.
8.3 GPS cannot positioning
Check if the device at a good GPS signal area.
Check opened AGPS function and GPSR or WIFI enable to connect with
Internet.
Check GPS module is in power save status.
Using OBDII extended cable to move device to a good GPS signal area and
keep the GPS antenna upward.
8.4 OBD cannot connect
Check if car support OBDII standard .
Check if OBD function closed.
Check if car engine is working, if it’s not, it’ll no OBD signal.
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