LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1677 (HVAC - Climate Control System - General Information And Diagnostics (Except Hybrid)) >> Diagnosis And Testing >> Climate Control System >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. 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 TABLE

    Mechanical Electrical
    • Loose, missing or damaged A/C compressor drive belt
    • Loose or disconnected A/C clutch
    • Broken or binding door/actuator
    • Broken or leaking refrigerant lines
    • Obstructed in-vehicle temperature sensor
    • Disconnected in-vehicle temperature aspirator hose
    • Battery Junction Box (BJB) fuse:
      • 25 (10A)
      • 35 (40A)
      • 47 (10A)
    • Smart Junction Box (SJB) fuse:
      • 15 (10A)
      • 45 (5A)
    • Blower motor inoperative
    • A/C compressor inoperative
    • Circuitry open/shorted
    • Disconnected electrical connectors
    • Cooling fan inoperative
  3. If the inspection reveals obvious concerns that can be readily identified, repair as necessary.
  4. If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
    NOTE: Make sure to use the latest scan tool software release.
    5. NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC  are provided to the VCM  .
  5. If the scan tool does not communicate with the VCM  :
  6. If the scan tool does not communicate with the vehicle:
  7. Carry out the network test.
    • If the scan tool responds with no communication from one or more modules, refer to INSPECTION AND VERIFICATION .
    • If the network test passes, retrieve and record the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  8. Clear the continuous DTCs and carry out the self-test diagnostics from the PCM or HVAC module.
    9. NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to PCM DTC TABLE .
  9. If the HVAC DTCs retrieved are related to the concern, go to the HVAC MODULE DTC TABLE . If the PCM DTCs retrieved are related to the concern, go to PCM DTC TABLE . For all other DTCs, refer to DIAGNOSTIC TROUBLE CODE (DTC) TABLE .
  10. If no DTCs related to the concern are retrieved, GO to SYMPTOM TABLE - CLIMATE CONTROL SYSTEMS  or GO to SYMPTOM TABLE - NVH .
scientia non olet · About LEMON Manuals