If an asset will not start using the T3 keypad, follow the troubleshooting steps below to identify whether the issue is related to the keypad, wiring, installation, or the asset itself.
Before You Begin
Before troubleshooting, verify the following:
Your asset battery is charged.
The asset is otherwise operating normally.
The keypad is securely mounted and does not appear damaged.
Step 1: Check the Keypad
Press any button on the keypad and observe the lights.
Scenario: The Keypad Does Not Light Up
Verify the asset battery is charged and at the recommended voltage.
Check the light above the 1 key.
Red, Blue, Red, Red Flashing Lights
If lights are showing red, blue, red, red across the top of numbers 1-4 this is a communication error within the keypad
This is most commonly a bad ECM01 but could be any part of the install. Recommendation is to replace the ECM01 and possibly any part of the install related to CAN communication within the install.
Possible Bad Components Of Installation.
ECM01
Keypad
Harness
CAN resistors
Main Harness for install
If the Light Above the 1 Key Is Solid Red
A solid red light may indicate that the keypad is:
Stuck in bootloader mode
Receiving insufficient voltage
Missing a proper ground connection
To attempt a reset:
Disconnect both the keypad and the ECM01 (if accessible).
Leave both disconnected for 5 minutes.
Reconnect both components.
Test the keypad again.
If the keypad still does not power on, continue to Step 3.
If the Light Above the 1 Key Is Not Solid Red
Continue to Step 3 for additional electrical troubleshooting.
Scenario: The Keypad Lights Up Normally
Press every button on the keypad.
Verify that each button illuminates the blue backlight when pressed.
If every button responds correctly, continue to Step 2.
Step 2: Test the Starting System
Enter your asset code and observe what happens.
Scenario: The Asset Does Not Start
Verify all machine safety requirements have been met (for example, the machine is in park, the parking brake is engaged, and any required safety interlocks are satisfied).
Enter your code again and attempt to start the asset.
Verify voltage is present on the brown wire at both the ECM01 and the key switch adapter harness. This confirms the T3 system is sending power to the starting circuit.
If the asset still does not start, continue with the troubleshooting section below that matches your installation.
Step 3: Check the Installation
If the asset still will not start, inspect the electrical installation.
Verify the following:
Asset Battery
Confirm the battery is fully charged and holding the correct voltage.
Fuses
Check all ignition and starting system fuses for damage or failure.
Power
Verify the red wire on the harness is supplying the correct voltage to the keypad, ECM01, and tracker (if installed).
Ground
Verify the black wire provides a proper ground to all installed components.
Harness Connections
Ensure all keypad, ECM01, relay, and harness connections are fully seated.
Inspect wiring for loose connectors, damaged insulation, or pinched wires.
Relay (if installed)
Verify the relay is securely connected and does not appear damaged.
Reconnect any loose connections and attempt to start the asset again.
If the Issue Persists
If the asset still will not start after completing these troubleshooting steps, contact T3 Customer Support using the chat icon in the bottom-right corner of T3.
To help speed up troubleshooting, provide:
Asset ID
A description of the issue
The troubleshooting steps already completed
If T3 Customer Support determines additional investigation is required, the issue will be escalated to an Installation Engineer for further diagnosis.
For more information on connected keypads, see Installing EquipmentShare's Connected Keypad System.