LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 859 (Cruise Control System (F-250-F550)) >> Diagnostic Tests >> Speed Control >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Visually inspect the following for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Throttle body
    • Battery junction box (BJB) fuse:
      • 12 (2A)
    • Central junction box (CJB) fuse:
      • 34 (10A)
      • 45 (10A) Diesel
    • Circuitry
    • Speed control switch(es)
    • Clutch pedal position (CPP) switch
    • Speed control deactivator switch
    • Stoplamp switch
    • Powertrain control module (PCM)
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  4. Verify the speedometer operates correctly without speed control by test driving the vehicle. If the speedometer does not operate correctly, refer to INSTRUMENT CLUSTER article.
  5. Verify the brake warning indicator is operating correctly. If the brake warning indicator is not operating correctly, refer to INSTRUMENT CLUSTER article.
  6. If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
    7. NOTE: The vehicle communication module (VCM) LED prove-out confirms voltage and ground from the DLC are provided to the VCM.
  7. If the scan tool does not communicate with the VCM:
    • Check the connection to the vehicle.
  8. If the scan tool does not communicate with the vehicle:
    • Verify the ignition key is in the ON position.
    • Verify the scan tool operation with a known good vehicle.
  9. Carry out the network test:
    • If the network test passes, retrieve and record the continuous memory diagnostic trouble codes (DTCs).
  10. Clear the continuous DTCs and carry out the self-test diagnostics for the PCM.
  11. If the DTCs retrieved are related to the concern, go to the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  12. If no DTCs related to the concern are retrieved, go to Symptom Chart .
    POWERTRAIN CONTROL MODULE (PCM) DIAGNOSTIC TROUBLE CODE (DTC) INDEX

    DTCs Description Action
    P0500 Vehicle Speed Error REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - TORQSHIFT article.
    P0565 Cruise Control ON Signal Go to Pinpoint Test D .
    P0566 Cruise Control OFF Signal Go to Pinpoint Test D .
    P0567 Cruise Control RESUME Signal Go to Pinpoint Test D .
    P0568 Cruise Control SET Signal Go to Pinpoint Test D .
    P0569 Cruise Control COAST Signal Go to Pinpoint Test D .
    P0578 Cruise Control Multifunction Input A Circuit Stuck Go to Pinpoint Test D .
    P0579 Cruise Control Multifunction Input A Circuit Range/Performance Go to Pinpoint Test D .
    P0581 Cruise Control Multifunction Circuit High Go to Pinpoint Test D .
    P0833 Clutch Pedal Switch B Circuit Go to Pinpoint Test G  (Gasoline) or Go to Pinpoint Test H  (Diesel).
    P1703 Brake Switch Out of Self-Test Range Go to Pinpoint Test C .
    P1572 Brake Pedal Switch Circuit Go to Pinpoint Test C .
    All other DTCs - REFER to the INTRODUCTION - GASOLINE ENGINES or INTRODUCTION -- DIESEL ENGINES article.
scientia non olet · About LEMON Manuals