XB66 - Does the A/C Appear to Cool Properly

- Does the A/C appear to cool properly?

Yes -- Go to XB67 (to check for intermittent ACP circuits). XB67 - Check ACP VREF/ACP SIG RTN For Intermittent Open

No -- Go to Heating and Air Conditioning to check the mechanical operation of the A/C system (low refrigerant charge, intermittent concerns, etc). If all checks are OK, return to XB67 to check for intermittent A/C Pressure (ACP) circuits. XB67 - Check ACP VREF/ACP SIG RTN For Intermittent Open