HOSE AS 3668018 - Caterpillar

probable root causes are listed below:
Battery voltage to the primary Electronic Control Module (ECM)
Open circuit and/or short circuit condition
Primary ECM personality module
Injector solenoid
Circuit breaker
Turn the Engine Control Switch (ECS) to the OFF/RESET position. Wait for 15 seconds. Start the engine. Observe the status screen on the Caterpillar Electronic Technician (ET). Verify the position of the ECS. If the position is indicated incorrectly, perform the diagnostic functional test Troubleshooting, "Engine Control Switch (ECS)".
Check the connectors and wiring for the following problems: damage, abrasion, corrosion and incorrect attachment. Refer to the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors".
Refer to the diagnostic functional test Troubleshooting, "Secondary ECM/Personality Module".
Use Cat ET to determine if any active diagnostic codes are present for the injector solenoids. Use Cat ET to determine if any logged diagnostic codes are present for the injector solenoids. Perform the "Injector Solenoid Test". Observe that the injector solenoids are being energized on Cat ET. Perform the "Cylinder Cutout Test". Locate the misfiring cylinder. Refer to the diagnostic functional test Troubleshooting, "Injector Solenoids".
Check the circuit breaker for the ECM. Reset the circuit breaker.