The 2002 Nissan Xterra Knock Sensor Wiring Diagram is an essential document for any owner of this popular SUV. This diagram provides the wiring details for the knock sensor, which is a critical component for maintaining optimal engine performance.. The 2002 Nissan Xterra knock sensor wiring diagram describes the factory configuration for a knock sensor kit that is installed in the vehicle. The knock sensor detects excessive engine vibration and sends a signal to the control unit telling it to reduce spark timing, thus reducing performance.
the knock sensor wire is pin 23. It's a white wire. probably the easiest thing to do is find pin 23 on the big blue ecu connector and cut about 6 in. from the blue ecu connector and slice a shielded wire from there all the way to the knock sensor.. Wiring diagram for All Wiring Diagrams for Nissan Xterra SE 2002 model. Component locations, pin connections, and complete circuit paths.