Faults & The Solutions - Coban GPS-303 User Manual

8. Faults & the Solutions
Faults
Fail to turn it on
No GSM signal
No GPS
No reply to SMS command Password wrong or the SMS format is wrong
Call without SMS reply or
cannot receive alarm SMS
Stop engine fail
fail
Remote Controller
Siren fail
27
Solution
Please check if built-in battery is charged, and power wires connected well.

Please check if SIM card installed correctly.

Please check if SIM card is WCDMA/GSM network.

Don't turn on the PIN code

no calls can be diverted
Installed location should be unblocked to ensure to receive GPS signals.
Authorized number is wrong or without setting any authorized number
Check the relay for engine cut is right connected.
Remove external power , turn on the device and program again
Siren's voltage is DC12V/24V/1A. Siren can't be activated if it is negative
triggered.