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

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Idle Air Control System

SYSTEM TEST
1. Warm up the engine to normal operating temperature.
2. Turn all electric loads OFF.




3. Connect a tachometer to the data link connector terminal IG- as shown.
4. With the cooling fan off, verify that the idle speed is within specification.

Idle speed (Neutral): 600-700 (650 ± 50) rpm




5. Verify that the idle speed is within the specification under the conditions in the image.