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Diagnostics & Information🔗

The Diagnostics & Information window can be used to view and clear Diagnostic Trouble Codes (DTCs).

Reading DTC's🔗

  1. Physically connect your laptop to the ECU with an Ethernet cable.

  2. Open VCM Live.

  3. Turn the vehicle ignition to a position other than OFF. (The engine can be running or stopped. But, the vehicle must supply power to the ECU.)

  4. Click the icon in the toolbar to open a data connection to the ECU.

  5. Click . The Diagnostics & Information window appears.

    New_Diagnostic_Menu

  6. Click Read DTCs. VCM Live will query the ECU for diagnostic information. When finished, any DTCs detected will be listed at the top of the window.

Clearing DTC's🔗

  1. Establish a data connection to the ECU.

  2. Click . The Diagnostics & Information window appears.

  3. Click Clear DTCs to tell the ECU to clear the reported DTCs.

Critical DTC's🔗

Whenever a critical DTC is detected by the ECU it will send the car into limp mode if you are driving reducing the power to 20%. If a critical DTC is detected by the ECU while the engine is off all fuel and spark will be shut off until all critical DTCs are resolved.

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