Hyundai Tucson: Engine Control System / Knock Sensor (KS) Description and Operation

Hyundai Tucson (LM) 2010-2015 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. 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. 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 pos ...

Knock Sensor (KS) Specifications

Specification ItemSpecificationCapacitance (pF)850 ~ 1,150 ...

Other information:

Hyundai Tucson (LM) 2010-2015 Owners Manual: Anti-lock brake system (ABS) warning light
This light illuminates if the ignition switch is placed in the ON position and goes off in approximately 3 seconds if the system is operating normally. If the ABS warning light remains on, comes on while driving, or does not come on when the ignition switch is placed to the ON position, this ...

Hyundai Tucson (LM) 2010-2015 Owners Manual: Battery saver function
The purpose of this feature is to prevent the battery from being discharged. The system automatically turns off the parking lights when the engine is turned off and the driverside door is opened (in that order). With this feature, the parking lights will be turned off automatically if the driv ...