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HOMESERVICE MANUALSFORD2007ESCAPE BASE, 2.3 Z, FWD, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1394 (CLIMATE CONTROL SYSTEM - GENERAL INFORMATION & DIAGNOSTICS (EXCEPT HYBRID))DIAGNOSIS AND TESTINGPRINCIPLES OF OPERATIONSYMPTOM CHART - CLIMATE CONTROL SYSTEMS
2007 Ford Escape Base, 2.3 Z, FWD, Automatic

Symptom Chart - Climate Control Systems

2007 Ford Escape Base, 2.3 Z, FWD, AutomaticSECTION Symptom Chart - Climate Control Systems
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the PCM DTC CHART .
SYMPTOM CHART - CLIMATE CONTROL SYSTEMS

Condition Possible Sources Action
  • No communication with the HVAC module
  • Fuse(s)
  • Circuitry open
  • HVAC module communication network
  • Unable to duplicate the customer concern and no DTCs present
  • HVAC system and/or related components
  • Reduced outlet airflow
  • Circuitry short
  • A/C compressor clutch air gap
  • A/C cycling switch
  • A/C clutch relay
  • Blower motor
  • Blower motor control
  • Blower motor resistor
  • Blower motor switch
  • PCM
  • If the A/C compressor does not cycle, GO to PINPOINT TEST N .
  • For Electronic Manual Temperature Control (EMTC) systems, if the A/C compressor cycles normally, GO to PINPOINT TEST R .
  • For Dual Automatic Temperature Control (DATC) systems, if the A/C compressor cycles normally, GO to PINPOINT TEST T .
  • The air inlet door is inoperative
  • Circuitry open/shorted
  • Door actuator
  • Air inlet door binding or stuck
  • HVAC module
  • Incorrect/erratic direction of airflow from outlets
  • Circuitry open/shorted
  • Door actuator
  • Mode door binding or stuck
  • HVAC module
  • Insufficient, erratic or no heat
  • Low engine coolant level
  • Engine overheating
  • Plugged or partially plugged heater core
  • Temperature blend door is binding or stuck
  • Temperature blend door actuator
  • Heater hose is kinked or binding
  • The air conditioning (A/C) is inoperative
  • Fuse(s)
  • Circuitry open
  • A/C system discharged/low charge
  • PCM
  • HVAC module
  • A/C clutch relay
  • A/C compressor clutch air gap
  • A/C pressure transducer
  • Evaporator discharge temperature sensor
  • A/C clutch field coil
  • The air conditioning (A/C) is always on - A/C compressor does not cycle
  • Circuitry shorted
  • PCM
  • A/C clutch relay
  • A/C compressor clutch air gap
  • A/C pressure transducer
  • A/C clutch field coil
  • The air conditioning (A/C) is always on - A/C mode always commanded ON
  • Circuitry shorted
  • PCM
  • HVAC module
  • Temperature control is inoperative/does not operate correctly
  • Circuitry open/shorted
  • HVAC module
  • Temperature blend door is binding or stuck
  • Temperature blend door actuator
  • The blower motor is inoperative - EMTC
  • Fuse(s)
  • Circuitry open
  • Blower motor relay
  • A/C blower motor
  • HVAC module - EMTC
  • The blower motor does not operate correctly - EMTC
  • Circuitry open/shorted
  • A/C blower motor resistor
  • HVAC module - EMTC
  • The blower motor is inoperative - DATC
  • Fuse(s)
  • Circuitry short/open
  • Blower motor relay
  • A/C blower motor
  • HVAC module
  • A/C blower motor speed control
  • The blower motor does not operate correctly - DATC
  • Circuitry open/shorted
  • A/C blower motor speed control
  • HVAC module
  • The temperature set point does not repeat after turning the ignition switch OFF
  • Fuse
  • Circuitry short/open
  • HVAC module
  • CARRY OUT the HVAC Module Cold Boot Process. If the condition returns, INSTALL a new HVAC module.
  • The temperature display will not switch between Celsius and Fahrenheit
  • HVAC module
  • The dual temperature control is inoperative/does not operate correctly
  • Temperature blend door/actuator broken/binding
  • HVAC module - Electronic Automatic Temperature Control (EATC)
  • Low A/C refrigerant charge
  • NOTE: For the passenger side temperature setting on hybrid vehicles equipped with dual-zone Electronic Automatic Temperature Control (EATC) and a Front Controls Interface Module (FCIM) built on or after 04/08/2009 to be functional, a passenger must be seated in the front passenger seat. If the front passenger seat is not occupied, the HVAC module will control the system based only on the driver side temperature setting. The HVAC module receives a Medium Speed Controller Area Network (MS-CAN) signal from the FCIM to indicate if the front passenger seat is occupied.

CHECK that the A/C system pressure is above 290 kPa (42 psi). If the pressure is below 290 kPa (42 psi), REFER to FLUORESCENT DYE LEAK DETECTION  in this service information. CHECK the temperature blend doors/actuators for a binding or broken condition. If no condition is found, INSTALL a new HVAC module.
  • Inaccurate external temperature display
  • HVAC module
  • Ambient temperature sensor
  • REFER to description and operation of the HVAC module external temperature display. If the external temperature display is not operating as described and no DTC is present, CARRY OUT the Ambient TEMPERATURE SENSOR  component test in this service information. If the sensor tests OK, INSTALL a new HVAC module. REFER to CLIMATE CONTROL -- FUSION, MILAN & MKZ article. TEST the system for normal operation.
  • A/C pressure relief valve discharging
  • High system pressure
  • A/C pressure relief valve
  • CHECK the high side system pressure. If the pressure is below the A/C pressure relief valve open pressure, REPLACE the A/C pressure relief valve. If the system pressure is above the A/C pressure relief valve open pressure, REPAIR the system for a restriction.
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