X51 - Check For B(+) to CCRM
- Key Off.
- Disconnect CCRM.
- Connect negative (-) test lead of DVOM to the battery negative post.
- Check for voltage on Pins 3 and 4 (B+) of the CCRM vehicle harness connector.
- Are both voltages greater than 10.5 volts?
YES -- GO to X52. X52 - Check If High Speed Fan Will Run - Bypassing CCRM
NO -- SERVICE open in B(+) circuit. RECONNECT CCRM. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes