Circuit Description
WARNING: This page is about a different variant/trim than selected.
A flat type knock sensor (non-resonant type) can detect vibrations in a wide band of frequency (about 6 kHz to 15 kHz) and has the following features:
- Knock sensors is fitted on the cylinder block to detect the engine knocking.
- The sensor contains a piezoelectric element which generates a voltage when it becomes deformed, which occurs when the cylinder block vibrates. If engine knocking occurs, the ignition timing is retarded to suppress it.
HINT:
If the ECM detects the DTC P0325, it enters the fail-safe mode in which the corrective retarded angle value is set to the maximum value.