Operation CHARM: Car repair manuals for everyone.
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

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Knock Sensor: Testing and Inspection

Component Inspection

KNOCK SENSOR




Check resistance between knock sensor terminal 1 and ground.

NOTE: It is necessary to use an ohmmeter which can measure more than 10 MOhms.

Resistance: Approximately 530 - 590 kOhms [at 20 °C (68 °F)]

CAUTION: Do not use any knock sensors that have been dropped or physically damaged. Use only new ones.