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P0303-CYLINDER 3 MISFIRE (CONTINUED) 13. FUEL PUMP INLET STRAINER Turn the ignition off. WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or ser- Is the Fuel Inlet Strainer plugged? Yes >> Replace the Fuel Pump Inlet Strainer. PerformPOWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Before continuing, check the Fuel Pump Module harness connector terminals for corrosion, damage, or terminal push out. Make sure the ground circuit is functional. Repair as necessary. Replace the Fuel Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 14. IGNITION COIL Disconnect the No.3 Ignition Coil harness connector. Remove the Fuel Pump Relay. Using a 12-volt test light connected to 12-volts, probe the (K18) Coil Crank the engine for 5 seconds while observing the test light. NOTE: The primary resistance of the 3.7L and 4.7L Ignition coil is Does the test light brightly blink/flicker? Yes >> Replace the Ignition Coil. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 No >> Go To 15 9 - 298 ENGINE ELECTRICAL DIAGNOSTICS ND |