X69 - Check High Speed Fan Operation, Bypassing CCRM

- Key "OFF".

- AC Pressure Switch (ACPSW) disconnected.

- Constant Control Relay Module (CCRM) disconnected.

- Jumper Pin 3 to Pin 6 at the CCRM vehicle harness connector.

- Does fan run?

Yes -- Replace CCRM. Reconnect all components. Re-evaluate symptom.

No -- Check continuity of Power-To-High Speed Fan circuit between CCRM and cooling fan. Service as necessary. If OK, replace cooling fan. Reconnect all components. Re-evaluate symptom.