Engine Sensors: Notes

NOTE: For locations of engine sensors not covered in this article, see appropriate THEORY/OPERATION article.

KNOCK SENSOR LOCATIONS ⁽¹⁾

Model

Location

Corolla 1.8L

In Cylinder Block, Below Air Cleaner

⁽¹⁾	Knock sensor monitors ignition knock conditions and delivers an input signal to KNK or KNK1 and KNK2 terminals of Engine Control Module (ECM). The ECM uses input signal to determine ignition timing (spark advance) and control fuel injection system.