Kia Carens: Engine Control System / Knock Sensor (KS) Description and operation

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” ...

Knock Sensor (KS) Specifications

Specification Item Specification Capacitance (pF) 950 ~ 1,350 Resistance (MΩ) 4.87 ...

Other information:

Kia Carens RP (2013-2018) Service Manual: Battery Repair procedures

Adjustment Battery Charging In general, vehicle battery charging system has three forms. 1. Constant current charge: The battery voltage gradually rises by charging with setting a constant current. If charging current and time are not managed c ...

Kia Carens RP (2013-2018) Service Manual: Underdrive Brake Control Solenoid Valve(UD/B_VFS) Repair procedures

Inspection 1. Turn ignition switch OFF. 2. Remove the air cleaner assembly. (Refer to Engine Mechanical System - "Air Cleaner") 3. Disconnect the solenoid valve connector (A). ...