Ignition system

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Ignition system

  1. 1. • The Hall sensor (sometimes called the Camshaft Position Sensor, CPS) is a separate unit from the Crankshaft Position Sensor (KPS), G28. • The sensor is located at the end of the camshaft for the cylinder head.
  2. 2. • The voltage supply to the Hall sensor is provided by the MPI control unit. • The signals from the reference sensor and the Hall sensor are used to identify the ignition TDC of the number three cylinder. • When starting the engine, the first ignition and injection points are triggered by the MPI control unit after receiving both signals.
  3. 3. • The knock sensors make use of this phenomenon by sending the ECU a signal at the onset of engine knock. The sensor contains a Piezo electric element which, when deformed by cylinder block vibration, infers that detonation (knock) is occurring and informs the ECU by generating a voltage. The ECU reacts to this signal by retarding the ignition timing. Vigor engines have two knock sensors. (See illustration at right for location.)

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