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

Air Injection: Testing and Inspection

Chart C-6:

Chart C-6 Wiring Diagram:

DESCRIPTION

During cold operation the ECM grounds the circuit, energizing the solenoid and permitting air to go the exhaust and catalytic converter. During off idle operation, the solenoid is de-energized by the ECM and the air is diverted to the atmosphere. When the engine is started and is already at operating temperature, air is directed into the exhaust momentarily, then diverted to the atmosphere.