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TI_DCA_Generators_ECU800_Diagnostic_Mode.docx 1 08/31/2017
This bulletin is provided for technical reference and service related updates. If you have any questions, comments or do not wish to receive these e-mails, please reply to this e-mail or call
the Service Technical Support Group 800 478-1244.
Product Group: Generators
Model: DCA Generators
ECU800 SERIES CONTROLLER DIAGNOSTIC MODE
Diagnostic Mode is used to power the ECU 800 Series Controller, the engine ECM (but does not initiate
cranking) and all DM1 messaging is streamed to the Control allowing full monitoring.
It can be used to retrieve a Diagnostic Trouble Code (DTC) without starting the engine. Allows connection with
engine diagnostic tools for expanded engine diagnosis and monitoring. It can also be used for checking the
level of the Diesel Exhaust Fluid (DEF) tank, because the engine ECM must be on to retrieve that information.
DO NOT ATTEMPT ANY MECHANICAL MAINTENANCE ON THE ENGINE IN THIS MODE SINCE THE
ENGINE CAN ACCIDENTALLY START UP. ALWAYS REMOVE THE BATTERY CONNECTIONS PRIOR TO
ENGINE SERVICE ACTIVITIES.
To enter in Diagnostic mode
•While holding the HOUR CHECK BUTTON, turn the OFF/RESET toggle switch to
MANUAL position then release the HOUR CHECK BUTTON.
