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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Idle Speed/Throttle Actuator - Electronic: Testing and Inspection

AIR VALVE

BAC Valve Port "A":

1. Disconnect air hoses from air funnel.
2. Blow through BAC valve from port "A" and check air flow.
Cold engine: Air flows
Warm engine: Air does not flow

ISC VALVE

BAC Valve Resistance Test:

1. Disconnect BAC valve connector.
2. Connect an ohmmeter to BAC valve terminals.
3. Check resistance. It should be 10.8 - 12.3 ohms at 20°C (68°F).