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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A/C Condenser Fan Relay

The A/C condenser fan motor, is operated by the A/C condenser fan relay, which is controlled by the PCM. The PCM turns ON the A/C condenser fan relay under any of the following conditions:
^ The A/C system is operating.
^ ECT sensor indicates that the engine coolant temperature is more than 110°C (230°F).
^ The PCM detects an ECT sensor malfunction.