Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Knock Sensor: Testing and Inspection

INSPECT KNOCK SENSOR

Using an ohmmeter, measure the resistance between terminals.

Resistance: 120 - 280 kOhm at 20°C (68°F)

HINT: If the resistance is not as specified, replace the sensor.