Upon installation and registration of the DiagnosticLink Standard package installer, the legacy tool Detroit Diesel Diagnostic Link (DDDL 6.x) will be installed and accessible from Start menu programs.ĭiagnosticLink Professional provides ECU information, diagnostic fault codes, instrumentation information, service routines, the ability to run system tests, edit ECU parameters, and the ability to reprogram engine controllers. Diagnosticlink Standard provides ECU information, diagnostic fault codes, instrumentation information, service routines, the ability to run system tests, and edit ECU parameters.