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HOMESERVICE MANUALSFORD2007ESCAPE BASE, 2.3 Z, FWD, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 274 (HVAC CONTROL SYSTEM - GENERAL INFORMATION & DIAGNOSTICS)DIAGNOSIS AND TESTINGCLIMATE CONTROL SYSTEMINSPECTION AND VERIFICATION
2007 Ford Escape Base, 2.3 Z, FWD, Automatic

Inspection and Verification

2007 Ford Escape Base, 2.3 Z, FWD, AutomaticSECTION Inspection and Verification
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer's concern by operating the climate control system to duplicate the condition.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Loose, missing or damaged A/C compressor drive belt.
    • Loose or disconnected A/C clutch.
    • Loose, misrouted or damaged vacuum lines(1).
    • Broken or leaking vacuum control motor(1).
    • Broken or leaking refrigerant lines.
    • Obstructed in-vehicle temperature sensor.
    • Disconnected in-vehicle temperature aspirator hose.
    • Central junction box (CJB) fuse:
      • 2 (10A)
      • 3 (10A)
      • 18 (10A)
    • Battery junction box (BJB) fuse:
      • 101 (40 A)
      • 11 (15A)
      • 21 (15A)
    • Blower motor inoperative.
    • A/C compressor inoperative.
    • Circuitry open/shorted.
    • Disconnected, loose fitting or incorrectly installed electrical connectors and pins.
    • Cooling fan inoperative.
    (1) A leak in the vacuum control circuit may occur during acceleration (slow leak), may exist at all times (large leak) and may exist only when specific functions are selected (indicating a leak in that portion of the circuit). The vacuum hoses used in the passenger compartment control circuit are constructed from PVC plastic material. The vacuum hoses used in the engine compartment are constructed of Hytrel®. Because of the materials used, never pinch the vacuum hoses off during diagnosis to locate a leak. A wood golf tee can be used as a plug when it is necessary to plug one end of the vacuum hose for leak test purposes.
  3. As pinpoint tests are being carried out, be sure to inspect for any disconnected, loose fitting or incorrectly installed component, module and in-line electrical connectors and pins.
  4. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  5. If the cause is not visually evident, connect the scan tool to the data link connector (DLC) and select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  6. If the scan tool still does not communicate with the vehicle, refer to the scan tool operating manual.
  7. Carry out the DATA LINK DIAGNOSTICS test. If the scan tool responds with:
    • CKT 914 or CKT 915 = ALL ECUS NO RESP/NOT EQUIP, refer to MODULE COMMUNICATIONS NETWORK .
    • SYSTEM PASSED, retrieve and record continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the EATC module.
    • If the electronic automatic temperature control (EATC) module cannot be accessed by the scan tool, GO to PINPOINT TEST E .
  8. If the DTCs retrieved are related to the concern, go to the Powertrain Control Module Diagnostic Trouble Code (DTC) Index or the EATC MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX .
  9. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.