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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X50 - Check For Continuity From CCRM to A/C Clutch



- Key "OFF".

- A/C clutch disconnected.

- Disconnect Constant Control Relay Module (CCRM).

- Measure resistance between Pin 23 of the CCRM vehicle harness connector and power side of the A/C clutch vehicle harness connector.

- Measure resistance between Pin 16 of the CCRM vehicle harness connector and ground side of the A/C clutch vehicle harness connector.

- Is each resistance less than 5.0 ohms?

Yes -- Reconnect A/C clutch. Go to X51. X51 - Check For A/C Demand Switch Voltage to CCRM

No -- Service open in power or ground to A/C clutch. Reconnect CCRM and A/C clutch. Re-evaluate symptom.