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

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

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Knock Sensor: Locations



Engine Controls Component Views

Lower Front of the Engine




1 - Knock Sensor (KS) Bank 1
2 - G115
3 - Starter Solenoid
4 - Starter
5 - Starter Solenoid Terminal S
6 - Fusible Link
7 - Positive Battery Cable
8 - Engine Oil Level Switch

Rear of the Engine




1 - Knock Sensor (KS) Bank 2
2 - Knock Sensor (KS) Bank 2 Connector
3 - Knock Sensor (KS) Bank 2 Jumper Harness
4 - C125