Hyundai Azera: Knock Sensor (KS) Description and Operation
Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Knock Sensor (KS) Description and Operation
Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Knock Sensor (KS) Description and Operation
| Description |
Knocking is a phenomenon characterized by undesirable
vibration and noise and can cause engine damage. The two Knock Sensor
(KS) are installed inside the V-valley of the cylinder block and senses
engine knocking.
When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element.
When a knock occurs, the sensor produces voltage signal. The
ECM retards the ignition timing when knocking occurs. If the knocking
disappears after retarding the ignition timing, the ECM will advance the
ignition timing. This sequential control can improve engine power,
torque and fuel economy.
Camshaft Position Sensor (CMPS) Repair procedures
Inspection
1.
Check the signal waveform of the CMPS and CKPS using the GDS.
Specification: Refer to “Wave Form”
Removal
•
DON'T remove the camshaft position se ...
Knock Sensor (KS) Specifications
Specification
ItemSpecificationCapacitance (pF)950 ~ 1,350Resistance (M?)4.87
...
See also:
Components and Components Location
Component Location
1. Hood switch2. Burglar horn3. IPM and RF antenna4. Key warning switch5. Front door switch6. Front door lock actuator & switch7. Rear door lock actuator & switch8. Rea ...
Camshaft Position Sensor (CMPS) Specifications
Specification
ItemSpecificationOutput Voltage (V)High: 5.0VLow: 0.7VAir Gap (mm)0.5 ~ 1.5
...
Components and Components Location
Component Location
1. Cluster assembly2. Seat belt switch3. Vehicle speed sensor4. Water temperature gauge sender5. Oil pressure switch6. Brake oil level switch7. Parking brake switch8. Door swit ...
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