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How do I troubleshoot my M-Series device?

This troubleshooting article is designed for M-series devices that are no longer functioning properly.

Updated this week

When your M-Series device stops functioning correctly, follow the steps below to identify and resolve the issue.

Common Issues & Fixes

Problem / Symptom

Probable cause

Corrective action required

1. Device not checking in / not on the map

1.a. Device not activated

Contact your account administrator to confirm the device is activated

1.b. Device not powering on

Turn off the machine’s engine and wait for all LED indicators to power down, then restart the engine, and let it run uninterrupted for at least 30 minutes

Check the device's power connections and wiring for damage or disconnection

Refer to the Installation Guide for correct wiring setup

(If installed) Check the in-line fuses and replace if blown

Ensure the B+ power connection is always on (unswitched)

Verify the Engine Run (White) wire receives:

  • 12V to 24V DC (on combustion engines)

  • up to 48V on electric machines

1.c. Device is damaged

Replace the device

1.d. GPS signal is obstructed

Move the asset outdoors and ensure that the antenna has an unobstructed view of the sky

Avoid mounting the device near heavy metals

Check the external antenna to ensure wiring is intact and correctly connected

2. In-line fuse always blows

2.a. Electrical short wiring harness

Replace the wiring harness

2.b. Device shorting out

Replace the device


CANbus® Troubleshooting

The following table outlines solutions to CANbus issues on M-series Devices.

Problem / Symptom

Probable cause

Corrective action required

1. No CANbus values

1.a. CANbus not communicating

Check CANbus wiring. You may need to reverse CAN (+) and CAN (-) signal wires. Refer to the Installation Guide

1.b. Missing termination resistance

Ensure the terminal plug is installed and measures 120 ohms

1.c. Control panel issue

Check the settings in the machine’s control panel guide

2. Incomplete CANbus data

Incorrect device configuration / Customer ECU issue

Contact your account administrator

3. Engine is running, but the data says otherwise

Engine data not transmitting / No CANbus data

Check the CANbus connections. Consider reversing the CAN (+) and CAN (-) wires. Refer to the installation guide

LED Indicators Guide

All M-series devices have two status LEDs:

  • COM "Cellular" LED (Orange)

  • GPS LED (Green)

Please refer to the tables below to interpret their behavior.


COM “Cellular” LED (Orange):

Condition

LED

Modem off

Off

Modem on and searching

Slow flashing

Network available

Fast flashing

Registered, no inbound acknowledgement

Alternates from solid to fast flash every second

Registered and received inbound acknowledgement

Solid (not flashing)


GPS LED (Green):

Condition

LED

GPS off

Off

GPS on/No GPS fix

Slow flashing

GPS time sync

Fast flashing

GPS fix

Solid (not flashing)

Solving issues with the LED indicators

If you find that the LEDs on your M6, M7 or M8 devices are not working:

  • Check wiring to ensure all connections are connected correctly, intact, and in good condition

  • Run the machine’s engine uninterrupted for at least 30 minutes to allow the device battery to charge and exit sleep mode

💡 Tip: If issues persist, please contact our Customer Support team and include the following:

  • Asset Number

  • Device Serial Number

Use the Messenger at the bottom-left of this page to create a support ticket



💡 Tip:

Need more help?

Click on the Messenger icon in the lower left corner to get in touch with Customer Support.


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