Engine Cranks But Will Not Start

Engine cranks but will not start
If the engine is cranking it means that the ECM is enabled with respect to the PATS. If PATS was disabled the ECM would not engage the starter. This could be confirmed by verifying the PATS LED prove out (illuminated solid for 3 seconds) or by reading DTC's from the IC and ECM. In this case, the fuel pump circuit should be verified. A fuel pump module, which is controlled by the ECM supplies the fuel pump. In all cases of suspected PATS non-start issues, the most logical failure modes should be eliminated first. Check all relevant supplies and grounds to the IC and ECM, check that the starter relay has a permanent 12v supply, check that the relay has a 12v supply and ground across the coil whilst the ignition is in the crank position.