The knock sensor uses a piezoelectric element to detect engine knock vibrations. The 2-pin connector carries the sensor signal and ground back to the ECU which retards ignition timing to prevent detonation.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Signal | Piezo knock signal to ECU | ADC |
| 2 | GND | Shield and signal ground | GND |
The knock sensor uses a piezoelectric element to detect engine knock vibrations. The 2-pin connector carries the sensor signal and ground back to the ECU which retards ignition timing to prevent detonation.