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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Component Testing






Coil Resistance Check
1. Disconnect the idle air control motor connector.
2. Measure the resistance between terminal 1 and terminal 4 of the connector at the idle air control motor side.
- Standard value: 38-52 ohms [at 20°C (68°F)]






3. Measure the resistance between terminal 2 and terminal 3 of the connector at the idle air control motor side.
- Standard value: 38-52 ohms [at 20°C (68°F)]