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

Normal Operation and Fault Conditions

When the A/C  is requested, the FCIM sends the button press message over the I-CAN  to the IPC. The IPC then sends the button press message to BCM over the HS-CAN  . The BCM then sends the button press message to the HVAC module over the MS-CAN  . Lastly the HVAC module sends an A/C  request message through the MS-CAN  to the BCM and the BCM sends the A/C  request through the HS-CAN  to the PCM.

REFER to Control System Logic 

DTC FAULT TRIGGER CONDITIONS

DTC Description Fault Trigger Conditions
P1464:00 A/C Demand Out Of Self Test Range: No Sub Type Information This DTC sets when the PCM senses an A/C  request during a PCM self-test.
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