For a complete wiring diagram Refer to Section 8WPossible CausesINTAKE SYSTEM RESTRICTIONECM CODES PRESENTECT SENSORFUEL INJECTOR LOW-SIDE CONTROL CIRCUIT SHORTED TO VOLTAGEENGINE CONTROL MODULEENGINE DRIVE BELTFUEL PRESSURE SENSORFUEL SUPPLY CONTAMINATIONSUPPLY SIDE FUEL SYSTEM PRESSUREFUEL SYSTEM RESTRICTIONGLOW PLUGSSKREEM CODES PRESENT1. ECM CODES PRESENTThe ECM must have proper power and ground connections for the following tests to be valid. Refer to Checking the ECM Power and Grounds in the symptom list.Turn the ignition on.With the scan tool, read the ECM DTCs.Does the scan tool display any ECM DTCs?YesRefer to symptom list for problems related to ECM DTC.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo To 22. SKREEM CODES PRESENTWith the scan tool, read the SKREEM DTCs.Does the scan tool display any SKREEM DTCs?YesRefer to symptom list for problems related to SKREEM DTC.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo To 3 3. CHECK FOR INTAKE SYSTEM RESTRICTIONSTurn the ignition off.Ensure vehicle has adequate fuel supply in fuel tank.Inspect all air intake and turbocharger related hoses/tubes and connections.Inspect the air filter for excessive dirt, soiling or other problems that may cause restricted air flow.Were any problems found?YesRepair or replace as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo to 44. ECT SENSORUsing a temperature probe, check the vehicle temperature near the ECT Sensor.Turn the ignition on.With the scan tool in Sensors, read the ECT Sensor temperature. Compare the temperature probe reading with the scan tool reading.Are the two readings within 10°C of each other?YesGo To 5 NoRepair as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)5. GLOW PLUGSPrior to performing this test, be sure to check the Glow Plug operation. Refer to CHECKING GLOW PLUG OPERATION for the related symptom(s).Refer to the Service Information and check the Glow Plugs for proper operation.Are the Glow Plugs operating properly?YesGo To 6 NoRepair as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)6. FUEL SYSTEM RESTRICTIONInspect the fuel system lines for restrictions, leaks or other problems.Refer to the Service Information to ensure that the fuel system is properly primed. A non-primed system or excessive air in the supply system will cause a no-start condition.Is there any evidence of problems?YesRepair as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo To 77. FUEL CONTAMINATIONInspect the fuel supply for contamination.Is the fuel contaminated?YesRefer to the Service Information to remove and replace fuel throughout the fuel system.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo To 88. SUPPLY SIDE FUEL SYSTEM PRESSURERefer to and perform the Checking the Low Pressure Fuel Delivery System Test in this section.Is the fuel pressure within specification?YesGo To 9NoRepair as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)9. FUEL PRESSURE SENSORTurn the ignition on, engine off. With the scan tool, read the Fuel Pressure Sensor volts.Is the Fuel Pressure Sensor voltage 0.45 and 0.60 volt?YesGo To 10NoRefer to the Service Information Wiring to check Fuel Pressure Sensor circuits. If no problems are found, replace the Fuel Pressure Sensor.10. CHECK FUEL PRESSURE AT ENGINE CRANKINGWith the scan tool, read the Fuel Pressure Sensor signal while cranking the engine.Does the Fuel Pressure Sensor signal increase to above 4300 psi (300 bar) within a few seconds after engine cranking begins?YesGo To 11NoGo To 1311. FUEL INJECTOR LOW-SIDE CONTROL CIRCUIT(S) SHORTED TO VOLTAGETurn the ignition off.Disconnect the each Fuel Injector harness connector.Disconnect the ECM harness connectors.Remove the ASD Relay from the TIPM.Connect a jumper wire between cavity 30 and cavity 87 of the ASD Relay Connector.Turn the ignition on.Measure the voltage of each Fuel Injector Low-Side Control circuit in the Fuel Injector harness connectors.Is there any voltage present?YesRepair the Fuel Injector Low-Side Control circuit(s) for a short to voltage.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo to 1212. ENGINE DRIVE BELTRefer to the Service Information to ensure the Engine Drive Belt is installed correctly and the camshaft and crankshaft gears are timed correctly.Were any problems found?YesRepair as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoReplace and program the Engine Control Module in accordance with the Service Information.13. FUEL PRESSURE SOLENOIDTurn the ignition off.Refer to the Service Information and replace the Fuel Pressure Solenoid.Turn the ignition on. With the scan tool, erase the ECM DTC's.Attempt to start the vehicle.Does the vehicle start and run?YesRepair is complete.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoRefer to the Service Information and replace the Fuel Injection Pump assembly.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)