The engine cranks but does not start for an extended period of time. The engine does eventually run, or may start but immediately stops.
Perform the Diagnostic system check - engine controls.
Perform the Fuel supply pump functional inspection.
Verify that the driver is using the correct starting procedure.
Ensure that the ground of the ECM is free of dirt and is fixed securely in the correct position.
Inspect whether the harness connector is properly connected.
Inspect the fuel type and quality.
Verify the injector ID code of each cylinder.
Check the scan tool data list.
Check for related Service Bulletins.
Compare the Engine Coolant Temperature (ECT), Intake Air Temperature (IAT), and Fuel Temperature parameters while the engine is cold. If the difference between the temperature values is 5°C {9°F} or more when the engine is cold, inspect for high resistance in each circuit and for sensor failure.
{When the ignition switch is turned ON, the MAF sensor is heated, and as a result, the IAT shows a higher value than the normal intake air temperature.}
Observe the Fuel Rail Pressure (FRP) Sensor parameter on the scan tool. It is normal if the Fuel Rail Pressure (FRP) Sensor parameter shows 0.9 to 1.0 V when the ignition switch is turned ON without starting the engine after 30 seconds or more have passed since the stop of engine operation. If not, inspect for high resistance in each circuit and for any sensor failure.
The CKP sensor is securely installed, and the flywheel is not damaged.
The CMP sensor is securely installed, and the sensor rotor is not damaged.
Inspect for air in the fuel system.
Inspect for water in the fuel.
Inspect whether the fuel is frozen.
Inspect whether the fuel filter warning light illuminates intermittently or frequently.
Inspect the fuel filter for clogging.
Inspect for external fuel leakage and excessive engine oil.
Inspect for fuel leakage from the pressure limiter and injector.
Inspect for collapsing, twisting, improper tightening, cracking, or clogging in the fuel system between the fuel tank and the fuel supply pump.
Inspect the vent valve and hose of the fuel tank for clogging.
{The piping may be clogged due to foreign material from the fuel tank entering the fuel system.}
Inspect the operation of the fuel supply pump.
{The fuel supply pump must be timed with the engine, and the adjusted value should be learned by the ECM.}
Perform the Cylinder Balance with a scan tool.
Perform the Injector Forced Drive with a scan tool.
Observe the Fuel Rail Pressure (FRP) Regulator Valve Feedback Current parameter on the scan tool.
Inspect the air cleaner, air intake duct, and intercooler for clogging, holes, or leakage.
Inspect for any condition that restricts flow within the turbocharger intake duct.
Inspect for a stuck intake throttle valve.
Inspect the inlet cover for clogging or leakage.
Inspect whether the exhaust system flow is restricted.
Inspect the compression pressure of the engine.
Inspect for improper idle gear timing.
Inspect the valve clearance.
Inspect the valve spring for breakage and fatigue.
Inspect the camshaft for wear.
Inspect the ring gear for wear.
Inspect the internal engine for seizure.
Inspect the glow plug control system operation.
Inspect the cranking speed.
Inspect the battery for deterioration.