How do you replace the knock sensor on a 1999 Nissan Quest?

To replace the knock sensor on a 1999 Nissan Quest, first, disconnect the battery to ensure safety. Then, locate the knock sensor, which is typically situated on the engine block. Remove the electrical connector and unbolt the sensor using the appropriate socket or wrench. Install the new sensor, reconnect the electrical connector, and reattach the battery before starting the engine to check for proper operation.