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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control - EMTC >> Diagnostic Routine(S) >> Diagnostic Routine B >> Diagnostic Overview >> Normal Operation and Fault Conditions

Normal Operation and Fault Conditions

Voltage is provided to the A/C  clutch relay coil. When A/C  is requested and A/C  line pressures allow, a ground is provided to the A/C  clutch relay coil from the PCM, energizing the A/C  clutch relay.

DTC FAULT TRIGGER CONDITIONS

DTC Description Fault Trigger Conditions
P0645:00 A/C Clutch Relay Control Circuit: No Sub Type Information The DTC sets when the PCM grounds the relay circuit and more current than expected is detected on the relay circuit. The DTC also sets when the relay circuit is off and no voltage is detected on the relay circuit.
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