Practice question

Which sensor provides the ECU with the critical cylinder position data needed to sync fuel injection and spark timing?

  1. Engine Coolant Temperature (ECT) sensor
  2. Crankshaft Position (CKP) sensor
  3. Manifold Absolute Pressure (MAP) sensor
  4. Oxygen (O2) sensor

Answer: B — Crankshaft Position (CKP) sensor

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