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Inspection and Verification

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. 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. Inspect to determine if one of the following mechanical or electrical concerns apply:
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Loose, missing or damaged A/C compressor drive belt.
    • Central junction box (CJB) fuse:
      • 13 (15A)
    • Loose or disconnected A/C clutch.
    • Loose, misrouted or damaged vacuum lines(1)
    • Battery junction box (BJB) fuse:
      • 3 (10A) or 3 (15A)
      • 14 (50A)
      • 17 (50A)
    • Broken or leaking vacuum control motor(1).
    • Broken or leaking refrigerant lines.
    • Blower motor inoperative
    • A/C compressor inoperative
    • Circuitry open/shorted
    • Disconnected electrical connectors
    (1) a 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 and measurements 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 a diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic 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 diagnostic tool still does not allow with the vehicle selection to be entered, refer to the diagnostic tool manual.
  7. Carry out the DATA LINK DIAGNOSTIC TEST using the diagnostic tool. If the diagnostic tool responds with:
    • SCP+, SCP-, CAN or UBP CIRCUITS FAULT = ALL ECUS NO RESP/NOT EQUIP, refer to MODULE COMMUNICATIONS NETWORK to diagnose the network concern.
    • If the powertrain control module (PCM) is not listed for a communication concern, turn the A/C controls to OFF and carry out the self-test diagnostics for the PCM.
  8. If any PCM diagnostic trouble codes (DTCs) are retrieved and related to the concern, go to the DIAGNOSTIC TROUBLE CODE (DTC) INDEX  to continue diagnostics.
  9. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART  to continue diagnostics.
DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Action
P1460 Wide open throttle A/C primary circuit malfunction See INTRODUCTION - GASOLINE and/or INTRODUCTION -- 6.0L DIESEL articles.
P1464 A/C demand out of self-test range See INTRODUCTION - GASOLINE and/or INTRODUCTION -- 6.0L DIESEL articles.
P1469 Low A/C cycling period See INTRODUCTION - GASOLINE and/or INTRODUCTION -- 6.0L DIESEL articles.
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