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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Test Notes

Enter this pinpoint test only when directed here.

This pinpoint test is intended to diagnose the following:
- Harness circuits: B+, EAIR, EAIR Monitor, Ground, AIRB, AIRD
- Secondary Air Injection (AIR) diverter valve
- Solid State Relay (SSR)
- Vacuum supply
- Electric secondary Air Injection (AIR) pump
- Mechanical air pump
- Secondary Air Injection (AIR) bypass solenoid
- Air silencer
- Secondary Air Injection (AIR) check valve
- Powertrain Control Module
- Secondary Air Injection (AIR) diverter solenoid
- Vacuum Reservoir