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GS-2900 (TTU-2900) Troubleshooting Guide

Basic Troubleshooting Steps for the CalAmp TTU-2900 (GS-2900)

Updated over 2 months ago

This guide is intended to help diagnose and resolve common issues with the GS-2900 device. Follow the steps below in order, and contact FleetWatcher Support if problems persist after troubleshooting.


Step 1: Check Device Indicator Lights

  1. Press the power/status button on the GS-2900.

    • Allow 5 to 10 seconds for the indicator lights to respond.

  2. Observe the green LED:

    • Blinking Green Light: Device is operating correctly and detecting engine running.

    • Solid Green Light: Indicates loss of communication — either cellular signal or GPS satellites are unavailable.

    • No Light: Proceed to Step 2 to investigate power and charging.


Step 2: If Green Light is Blinking but No Engine Packets Are Transmitting

  1. Power cycle the device:

    • Turn off the GS-2900.

    • Wait 30 to 60 seconds.

    • Turn it back on.

  2. Recheck the LED light and confirm if engine packets are being transmitted.

  3. If the issue persists:

    • Proceed to Step 4 to contact FleetWatcher Support.


Step 3: If No Lights Are Displayed

This may indicate a power or charging issue.

  1. Verify recent charging:

    • Has the device been charged within the last 1–2 days?

  2. Check the charging method and connection:

    • Was the correct charging port used on the device?

    • Inspect the CLA (Cigarette Lighter Adapter):

      • Is the red indicator light on the CLA illuminated?

    • Try charging the device using a 110V wall outlet and the provided AC wall adapter.

  3. Check the solar panel (if used):

    • Is the solar panel damaged in any way?

    • Is it installed in a location with direct access to sunlight throughout the day?

  4. If the device still shows no lights after confirming power and charging:

    • Proceed to Step 4.


Step 4: Contact FleetWatcher Support

If you've completed the troubleshooting steps above and the GS-2900 is still not functioning as expected, please contact FleetWatcher Support for further assistance.

  • Information to Provide:

    • Device Serial Number

    • Description of the issue

    • Steps already taken

    • Charging method used (solar, CLA, wall outlet)

    • Whether the red CLA indicator light is on

    • Photos of device/sensor installation, if applicable


Quick Reference: LED Behavior

LED Status

Meaning

Blinking Green

Engine running; device operating normally

Solid Green

Lost signal (cellular or GPS)

No Light

Possible power or charging issue

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