2545

Possible Causes

• •Active event/fault code 781 at the base board
• •CAN Datalink Failure
• •CAN datalink failure
• •Event/fault code 781 (CAN Data Link Failure) active at the base board
• •Event/fault code 781 CAN Data Link Failure active at the base board
• •Event/fault code 781 active at the base board
• •Faulty relay providing power to the Keyswitch
• •Faulty terminating resistors
• •Incorrect terminating resistor resistance

Suggested Actions

1. 1Check terminating resistors: With connectors J11 and J26 removed, measure resistance between pins J11-19 and J11-20 (60 ohms is satisfactory).
2. 2Check the normally open relay providing power to the Keyswitch; replace if faulty.
3. 3Check the normally open relay that provides power to the Keyswitch and replace if faulty.
4. 4Enable the Keyswitch through the operator panel (Go to Test > Output > Engine > Keyswitch Driver Override Enable, set to Enable).
5. 5Reference the troubleshooting procedure for event/fault code 781 in the engine service manual.
6. 6Reset the Keyswitch manually
7. 7Reset the Keyswitch manually: Put the generator set control in the OFF position and press the Reset button on the operator panel to clear shutdown faults and reset the Keyswitch.
8. 8Reset the Keyswitch manually: Put the generator set control in the OFF position and press the Reset button on the operator panel to clear shutdown faults. Enable the Keyswitch through the operator panel via Test > Output > Engine > Keyswitch Driver Override Enable (set to Enable).
9. 9Reset the base board and PCC controls: Push Emergency Stop in, wait 30 seconds, disconnect battery terminals, wait 10-15 seconds, reconnect battery terminals correctly, pull Emergency Stop out, and press the Fault Reset button.
10. 10Reset the base board and PCC controls: Push the Emergency Stop button in, wait 30 seconds, disconnect the battery terminals, wait 10-15 seconds, reconnect the battery cables correctly, pull the Emergency Stop button out, and press the Fault Reset button.

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