GUARD GP 4173655 - Caterpillar

Table 1
Event Code    
Description    Conditions which Activate the Code    System Response    
E264(3) Emergency Stop Activated     The "Emergency Stop" button is pressed.     The Electronic Control Module (ECM) commands the gas shutoff valve to close and the ECM terminates the ignition. The shutdown output is activated. The code is logged.    
E269(3) Customer Shutdown Requested     The engine is either cranking or running. The input for the stop is set for 200 ms.     The fuel is shut off. The shutdown output is activated. The code is logged.    Probable Causes
The "Emergency Stop" button is pressed.
The customer's stop switch is pressed.
The circuit for the emergency stop or the customer's stop switch is faulty.
Either switch is activated by excessive vibration.Recommended Actions
Emergency Stop Shutdown or Customer Shutdown
Ask the operator if the stop was intentional. Make sure that the reason for the stop has been corrected. Reset the control system. Resume normal operation.If the stop was accidental, reset the control system. Resume normal operation.Check the Circuit for the Stop Switches
Note: The circuit for the customer's stop switch and the circuit for the emergency stop switch must remain closed in order for the engine to run. The normal stop is not the customer's stop switch.Inspect the wiring between the switches and the connector of the ECM. Look for damage and/or for corrosion. Refer to Troubleshooting, "Electrical Connectors - Inspect".Troubleshoot the engine control switch according to Troubleshooting, "Electrical Power Supply - Test".Inspect the Stop Switches
Inspect the stop switches for evidence of damage that has been caused by vibration. Disassemble the switches. Inspect the components for looseness, cracks, and abrasion. Use an ohmmeter and toggle the switches in order to check for proper electrical operation.Replace any faulty components.