No Fire 2005 Ford Escape Ignition

Getting no fire to the spark plugs. I have changed two coil packs and spark plugs along with the crankshaft position sensor. What else could cause this issue?

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RESPONSE

• PCM Fuse
• PCM
• Ignition Transformer Capacitor
• Wiring Harness
• Camshaft Position Sensor

Engine Ignition – No Fire

The electronic ignition (EI) system is a coil-on-plug ignition system. The coil-on-plug ignition system consists of the following components:

• Coil-on-plugs
• Spark plugs
• Crankshaft position (CKP) sensor
• Camshaft position (CMP) sensor

The coil-on-plugs:

• change low voltage signals from the powertrain control module (PCM) to high voltage pulses.
• supply the high voltage pulses to the spark plugs.
• are connected directly to each spark plug.

The spark plugs:

• change high voltage pulses into a spark which ignites the fuel and air mixture.

The CKP sensor:

• is a variable reluctance sensor.
• is triggered by a 36-minus-1 tooth trigger wheel mounted on the crankshaft.
• provides base timing and crankshaft speed (rpm) to the PCM.

The CMP sensor:

• is a variable reluctance sensor.
• provides camshaft rotational location information to the PCM.

Ignition Coil wiring diagram 2005 Ford Escape

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