Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
Are DTCs P0301, P0302 or P0303 present?
Yes | No |
|---|---|
GO to JB7 . | GO to JB8 . |
JB7 CONFIRM COMPONENTS FOR CYLINDER MISFIRE
• Remove the suspect coil (as determined from the table) for the appropriate DTC. For additional information, refer to the Workshop Manual Section 303-07, Engine Ignition.
• Remove the suspect spark plug (as determined from the table) for the appropriate DTC. For additional information, refer to the Workshop Manual Section 303-07, Engine Ignition.
• Remove the suspect fuel injector (as determined from the table) for the appropriate DTC. For additional information, refer to the Workshop Manual Section 303-04, Fuel Charging and Controls.
• Remove opposite bank coil. For additional information, refer to the Workshop Manual Section 303-07, Engine Ignition.
• Remove the opposite bank spark plug. For additional information, refer to the Workshop Manual Section 303-07, Engine Ignition.
• Remove the opposite bank fuel injector. For additional information, refer to the Workshop Manual Section 303-04, Fuel Charging and Controls.
• Install removed components from bank 1 on the opposite cylinder in bank 2 and install the components removed from bank 2 in bank 1.
• Make sure the vehicle is correctly reassembled.
• Drive the vehicle to determine if the misfire is still present.
• Carry out the PCM self-test.
Does the misfire move from the suspect cylinder in bank 1 to the opposite cylinder in bank 2?
Yes | No |
|---|---|
GO to JB8 . | GO to JB15 . |
JB8 CHECK FOR SPARK AT THE CYLINDERS INDICATED BY THE DTCS
• Ignition OFF.
• Remove the fuel pump fuse to disable the fuel pump.
• Disconnect the ignition coils from the spark plugs.
• Connect the Adjustable Ignition Spark Tester THX458 or equivalent to the ignition coil boot.
• Observe the spark tester while cranking the engine.
• For the 6.2L engine,
• Connect the ignition coils to the spark plugs.
• Disconnect the exhaust spark plug wires from the spark plugs.
• Connect the Adjustable Ignition Spark Tester THX458 or equivalent to the exhaust spark plug wire.
• Observe the spark tester while cranking the engine.
Is a bluish-white spark present?
Yes | No |
|---|---|
GO to JB13 . | For E-Series, EcoSport 2.0L, Edge 3.5L, Escape/Kuga 2.5L, F-150 3.5L TiVCT, |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.