What you need to know about your car Knock Sensor
Don't ruin your car engine. Trial and error sucks Know sensor Knock sensor Knock sensor Circuit Description A flat type knock sensor (non–resonant type) has the structure that can detect vibration in a wider band of the frequency from about 6 kHz to 15 kHz and has the following features. Knock sensors are fitted on the cylinder block to detect engine knocking. The knock sensor contains a piezoelectric element which generates voltage when it becomes deformed. The generation of the voltage occurs when the cylinder block vibrates due to the knocking. If the engine knocking occurs, in order to suppress it, the ignition timing is retarded. MONITOR DESCRIPTION The knock sensor, located on the cylinder block, detects spark knocks. When the spark knocks occur, the sensor picks–up vibrates in a specific frequency range. When the ECM detects the voltage in this frequency range, it retards the ignition timing to suppress the spark knock. The ECM also sense...