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All LEDs remain off when the device is connected to power

  • Check power supply, check ON/OFF switch

PWR LED flashing

  • The device is in standby mode

  • Ensure the standby signal is connected to a supply greater than 7 VDC.

  • Ensure the supply voltage is greater than 7 VDC.

  • Device configuration has put the device into standby mode based on low ignition state detected by device

PWR LED ON all other LED OFF

  • Device is powering on

SIM1/2 LED flashing

  • SIM card is not detected, check that SIM(s) is inserted properly

GNSS LED flashing

  • No valid GPS fixes. The GPS antenna requires a clear view of the sky to obtain a valid GPS fix.  The time to fix can vary from a few seconds to 2-3 minutes depending on conditions.

  • GPS LED flashing has no impact on cellular connectivity.

  • Verify GPS antenna is physically connected to the CTM-500

Connection/Cellular LED OFF

 

  • RF signal may not be available; Device is in an area of no cellular signal.

  • Cellular device is not registered on the network; make sure radio module/device/SIM has been activated on the network.

  • Device configuration has disabled Cellular connectivity or configuration is incorrect.

  • Verify Cellular antennas are physically connected to the CTM-500

 

Connection/Cellular LED (flashing RED)

 

  • CTM-500 is registered on the network and is in an area of 5G/LTE coverage, but device has not obtained an IP address

 

No internet access after connecting to CTM-500

  • Verify packet forwarding is enabled in the configuration of the modem

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