Knock Sensor (KS) Inspection

Disconnect the KS connector.
Measure resistance between KS terminal and body ground.
- If not as specified, replace the KS. (See KNOCK SENSOR (KS) REMOVAL/INSTALLATION .)
KS resistance

532-588 kilohms [20°C{68°F}]

Fig 1: Locating Knock Sensor With Torque Specifications
Courtesy of MAZDA MOTORS CORP.