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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X68 - Check ACPSW Circuit Continuity to CCRM

- Key "OFF".

- AC Pressure Switch (ACPSW) disconnected.

- Disconnect Constant Control Relay Module (CCRM).

- Measure resistance between Pin 17 of the CCRM vehicle harness connector and the ACPSW circuit at the ACPSW vehicle harness connector.

- Is resistance less than 5.0 ohms?

Yes -- Go to X69. X69 - Check High Speed Fan Operation, Bypassing CCRM

No -- Service open circuit. Reconnect all components. Re-evaluate symptom.