LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2004 >> Freestar Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 367 (HVAC System - Climate Control System-General Information) >> Diagnosis And Testing >> Climate Control System >> Inspection and Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection and Verification

WARNING: This page is about a different car, the 2004 Ford RV Cutaway, 2004 Ford Econoline, 2004 Ford E450 Super Duty, and 2004 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 

    Fig 1: Identifying Visual Inspection Chart
    G02766250Courtesy of FORD MOTOR CO.

    a A leak in the vacuum control circuit may occur during acceleration (show 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 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 scan tool to the data link connector 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 allow with the vehicle selection to be entered, refer to the scan tool manual.
  7. Carry out the DATA LINK DIAGNOSTIC TEST using the scan tool. If the scan tool responds with:
    • SCP+, SCP-, 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) (12A650) 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 

DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Action
P1460 Wide open throttle A/C primary circuit malfunction REFER to the appropriate INTRODUCTION article in ENGINE PERFORMANCE.
P1464 A/C demand out of self-test range REFER to the appropriate INTRODUCTION article in ENGINE PERFORMANCE.
P1469 Low A/C cycling period REFER to the appropriate INTRODUCTION article in ENGINE PERFORMANCE.
scientia non olet · About LEMON Manuals