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HOMESERVICE MANUALSFORD2010FOCUS SE, 2D COUPE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMESEAT SYSTEM - SEATSDIAGNOSIS AND TESTINGSEATSINSPECTION AND VERIFICATION
2010 Ford Focus SE, 2D Coupe, Standard

Inspection and Verification

2010 Ford Focus SE, 2D Coupe, StandardSECTION Inspection and Verification
  1. Verify the customer concern by operating the heated seat functions.
  2. Visually inspect for obvious signs of mechanical and electrical damage.

    Visual Inspection Chart 

    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Switch(es)
    • Seat tracks obstructed or damaged
    • Recliner assembly damaged (backrest frame)
    • Seat cushion or backrest trim cover damaged (heated seat heater mats)
    • Smart Junction Box (SJB) fuse(s):
      • 18 (20A)
      • 43 (10A)
    • Wiring harness
    • Loose or corroded connector(s)
    • Heated seat switch (part of HVAC module)
    • Heated seat relay
    • Cushion or backrest heater mat
    • HVAC module
  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. NOTE: Make sure to use the latest scan tool software release.

    If the concern is with the heated seat and the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

  5. NOTE: The Vehicle Communication Module (VCM) LED prove out confirms power and ground from the DLC  are provided to the VCM  .

    If the scan tool does not communicate with the VCM  :

    • check the VCM  connection to the vehicle.
    • check the scan tool connection to the VCM  .
    • refer to MODULE COMMUNICATIONS NETWORK , No Power To The Scan Tool, to diagnose no power to the scan tool.
  6. 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.
    • refer to MODULE COMMUNICATIONS NETWORK to diagnose no response from the PCM.
  7. Carry out the network test.
    • If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK .
    • If the network test passes, retrieve and record on-demand and Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  8. Clear the continuous DTCs and carry out the self-test diagnostics for the HVAC module.
  9. If the DTCs retrieved are related to the concern, go to HVAC MODULE DTC CHART . For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES .
  10. 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.