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Home >> Ford >> 2012 >> Mustang Base, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - Vehicle Dynamic Systems >> Diagnosis And Testing >> Anti-Lock Control >> Inspection and Verification
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Inspection and Verification

  1. Verify the customer concern.
  2. Verify the stoplamps operate correctly. If the stoplamps do not operate correctly, refer to EXTERIOR LIGHTING SYSTEM . If the stoplamps operate correctly, proceed to the next step.
  3. Verify the base brake system operates correctly. If any concerns are present, address them before continuing with any ABS concerns. Refer to BRAKE SYSTEM - GENERAL INFORMATION . If the base brake system operates correctly, proceed to the next step.
  4. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Base brake system
    • Hydraulic Control Unit (HCU)
    • Tire pressure
    • Mismatched tires
    • Wheel speed sensor ring
    • ABS module
    • Battery Junction Box (BJB) fuse(s):
      • 8 (40A)
      • 10 (30A)
    • Smart Junction Box (SJB) fuse 34 (5A)
    • Brake Pedal Position (BPP) switch
    • Traction control switch
    • Wheel speed sensor
    • Wiring, terminals or connectors
  5. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    6. NOTE: Make sure to use the latest scan tool software release.
  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 power and ground from the DLC are provided to the VCM.
  7. 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.
  8. If the scan tool does not communicate with the vehicle:
    • verify the ignition is ON.
    • verify the scan tool operation with a known good vehicle.
    • refer to MODULE COMMUNICATIONS NETWORK , The PCM Does Not Respond To The Scan Tool, to diagnose no response from the PCM.
  9. 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 Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  10. Clear the CMDTCs and carry out the self-test diagnostics for the ABS module and the IPC.
  11. If the DTCs retrieved are related to the concern, go to the ABS MODULE DTC CHART . For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES .
  12. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .
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