RIM 5T5795 - Caterpillar

Recommended Actions
Diagnostic Codes and Event Codes
Certain diagnostic codes and/or event codes may prevent the engine from starting. Connect the Caterpillar Electronic Technician (ET) and check for active codes and/or logged codes. Troubleshoot any codes that are present before continuing with this procedure.Fuel Level
Visually check the fuel level. Do not rely on the fuel gauge only. If necessary, add fuel.Oil Level
Check the engine oil level. If necessary, add oil.Note: Engine oil supplies the injection actuation pressure circuit. Proper engine oil level is necessary for fuel injection.Remote Shutdown Switch
Make sure that the remote shutdown switch is run position. Use Cat ET to verify the status of the shutdown switch. If a problem with the remote shutdown switch is suspected, check the electrical circuit for the switch.Electrical Connectors
Check for correct installation of the following connectors:
J1/P1 ECM connector
J2/P2 ECM connector
J20/P20 Engine speed/timing sensor connector
J44/P44 Engine speed/timing sensor connector
Unit injector connectorsRefer to Troubleshooting, "Electrical Connectors - Inspect".Circuit Breakers
Check the circuit breakers. if a circuit breaker is tripped, reset the circuit breaker.Flash File
Verify that the correct flash file is installed in the ECM.Note: If a new ECM has been installed, the ECM will need to be programmed before the engine will run. Also, the ECM will not communicate with Cat ET if the ECM has not been programmed.Engine Speed/Timing
Crank the engine and observe the engine speed on the status screen in Cat ET. If Cat ET indicates 0 rpm, troubleshoot the circuit for the engine speed/timing sensor.
Ensure that the timing reference gear is installed correctly. The engine will not start if the gear was installed backward. Check for proper orientation between the crankshaft and camshaft drive gears. Correct the orientation and/or replace the drive gear, if necessary. Refer to the engine's Disassembly and Assembly manual.Injection Actuation Pressure
The following criteria must be meet for injection to be enabled. If this criteria is not met, then there should be error for "Injection Disabled".
Engine speed in the range of 100 to 250 rpm
The ECM determining correct timing between the primary speed sensors and the HEUI fuel pump drive train
Minimum injection actuation pressure of 6205 kPa (900 psi)
Desired and Actual Injection Actuation Pressure (IAP) within 1379 kPa (200 psi)
Check the engine oil level. if necessary, add oil. Verify that the pressure for the lube oil system is accurate.Note: Engine oil supplies the injection actuation pressure circuit. proper engine oil level is necessary for fuel injection.
Crank the engine while you observe the injection actuation pressure on the Cat ET status screen. if the injection actuation pressure is at least 5000 200 kPa (725 29 psi), the problem is not in the injection actuation pressure control system.
Check the seals on the injection actuation pressure control valve. if the seals are faulty, replace the seals and repeat Step 1.
Check the wiring harness to the injection actuation pressure control valve for opens and/or shorts.
Measure the coil resistance on the injection actuation pressure control valve. If the coil resistance is not between 5.0 Ohms and 15.0 Ohms, replace the injection actuation