Operation CHARM: Car repair manuals for everyone.

X35 - No Engine Cooling Fan: Check Power Supply to CCRM



- Key "OFF".

- Disconnect Constant Control Relay Module (CCRM).

- Connect negative probe of Digital Volt/Ohm Meter (DVOM) to battery negative post.

- Check for voltage on Pins 3 and 4 at the CCRM vehicle harness connector.

- Check for voltage on Pins 8 and 10 at the CCRM vehicle harness connector.

- Is each voltage greater than 10.0 volts?

Yes -- Go to X36. X36 - Check Fan Motor Operation

No -- Service open in battery power circuit. If B+ was open to only two pins (3/4 or 8/10), Service open and go to X141. X141 - Verify Operation of Both HFC Relays In CCRM

Reconnect CCRM. Re-evaluate symptom.