Engine Knock Sensor Wiring Diagram

Refer to your repair manual for an exact diagram.

Engine knock sensor wiring diagram. Knock sensor installation for 2003 honda pilot. I don t know where the knock sensor is exactly on this engine but if you buy the replacement first it will help you identify it. The location will vary slightly by manufacturer. Knock sensor 1 circuit malfunction bank 1 code p0325 meaning.

The knock sensor is located under the plenum and intake in the middle of block going to take a little bit to r r it have to pull the timing belt water pump all of it. The sensor im sure was not cheep so you might want to check out your wiring before installing sensor. The reason for this is the sensor generates its own voltage and is case grounded. Chances are the wiring to the sensor is corroded and the sensor is ok.

It has an electrical connector attached to it two wires i believe. The dotted lines in the diagram represent the wire shielding. When engine knock is detected the crank sensor sends its signal directly to the pcm. To me the most interesting part about the knock sensor is that it only has one wire going to it.

The wire from the sensor will undoubtedly lead through the firewall and into the pcm. Knock sensors are solely used for the purpose of sensing when your engine is knocking or sensing when there is exploding in the air fuel mixture in a way that delivers less power and can also damage the engine if prolonged. Knock sensor location diagram. First here s a diagram from the factory service manual.

It s screwed into the block near the head or the head itself. The component is found on the engine manifold mounted beneath the intake manifold in the middle of the engine. If drive around with the check engine light on when a code p0332 or a p0327 is set in the computer memory engine damage could occur. The diagram is a little deceiving b c the grounding of the shielding to the knock sensor ground wire and chassis happens inside the car right next to the ecu rather than in the engine bay.