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.
Fusion 2.5L,
KA 1.0L,
Motorhome / Stripped Chassis / Step Van, and
Transit Connect 2.5L, GO to JB10 .
For all others, INSTALL a new COP.
Clear the PCM DTCs. REPEAT the self-test.
JB9 CHECK FOR SPARK AT ALL CYLINDERS
• 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 at each cylinder 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 at each cylinder while cranking the engine.
Is a bluish-white spark consistent between all cylinders?
Yes | No |
|---|---|
GO to JB13 . | RECORD the cylinders with inconsistent spark. For E-Series, EcoSport 2.0L, Edge 3.5L, Escape/Kuga 2.5L, F-150 3.5L TiVCT, F-650 / F-750, F-Series Super Duty, Fusion 2.5L, KA 1.0L, Motorhome / Stripped Chassis / Step Van, and Transit Connect 2.5L, GO to JB10 . For all others, INSTALL a new COP. |
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.