Page Comparison

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