Hyundai Santa Cruz: Engine Control System / Knock Sensor (KS)

- Description Knocking is a phenomenon characterized by undesirable vibration and noise that can cause engine damage. Knock Sensor (KS) is installed on the cylinder block and senses engine knocking.When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element, and the sensor produces voltage signal to ECM. On receipt of this signal, ECM will control the ignition timing by retarding the ignition timing and then advancing the ignition timing when the knocking disappears. This sequential control can improve engine power, torque and fuel economy

1.Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2. Remove the Intake Manifold.(Refer to Engine Mechanical System - "Intake Manifold")

3. Disconnect the oil temperature & oil pressure sensor connector (A).

4. Disconnect the engine coolant sensor connector (A).

5. Remove the installation bolt (A), and then remove the knock sensor (B).

Tightening torque :16 - 24 N.m (1.6 - 2.4 kgf.m, 11.8 - 17.7 lb-ft)

• Install the component to the specified torques.

• If a part is dropped, replace it with a new one and discard the dropped part as invisible damage may be caused.

1.Install in the reverse order of removal.