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)

Or, hide this message: temporarily or permanently

KE3 - Check For Other DTCs



- Are Diagnostic Trouble Codes (DTC) 126, 136, 137, 172 or 173 present?

Yes -- Reconnect Idle Air Control (IAC) solenoid. Return to Diagnostic Trouble Code (DTC) Charts for appropriate Pinpoint Test. Manufacturer Code Charts


No -- Go to KE4. KE4 - Measure IAC Solenoid Resistance