Engine Ignition

2010 Ford Transit Connect Van CargoSECTION Engine Ignition

The Electronic Ignition (EI) system is a coil-on-plug ignition system. The coil-on-plug ignition system consists of the:

  • Camshaft Position (CMP) sensor.
  • Crankshaft Position (CKP) sensor.
  • ignition-coil-on plug.
  • spark plugs.

The CMP  sensor:

  • is a Hall-effect sensor.
  • is mounted in the valve cover.
  • provides camshaft rotational location information to the PCM.

The CKP  sensor:

  • is a variable reluctance sensor.
  • is mounted on the engine front cover.
  • is triggered by a 36-minus-1 tooth trigger wheel located on the crankshaft pulley and damper.
  • provides ignition timing and crankshaft speed (RPM) to the PCM.

The ignition-coil-on-plugs:

  • change low-voltage signals from the PCM to high-voltage pulses.
  • produce the high-voltage pulses to the spark plugs.
  • are connected directly to each spark plug.
  • have replaceable coil boots.

The spark plugs:

  • change high-voltage pulses into a spark which ignites the fuel and air mixture.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.