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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Description Of Operation, Control Module Outputs





1. Sensor ground/reference ground
2. Ignition coil
3. Injectors
4. Idle air control valve
5. Main relay
6. Fuel pump relay
7. EVAP canister purge valve
8. Secondary air injection pump, control valve and relay
9. Engine speed
10. Throttle position
11. Fuel consumption
12. A/C compressor
13. CHECK ENGINE lamp (MIL)
14. Diagnostic communication
15. SHIFT-UP lamp
16. Oxygen sensor pre-heating