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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 565 (Anti-Lock Brake System (Abs) And Stability Control) >> Diagnosis And Testing >> Anti-Lock Brake System (ABS) and Stability Control >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Verify the stoplamps operate correctly by applying and releasing the brake pedal. If the stoplamps do not operate correctly, refer to EXTERIOR LIGHTING . If the stoplamps operate correctly, proceed to the next step.
  3. Verify that the PRNDL operates correctly on the IPC  . If the PRNDL does not operate correctly, refer to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . If the PRNDL operates correctly, proceed to the next step.
  4. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Wheel speed sensor ring
    • HCU 
    • Tire pressure
    • Mismatched wheels or tires on vehicle
    • Base brake system
    • Brake booster vacuum hose
    • Steering components, suspension components and tire size
    • BJB  fuses:
      • 36 (30A)
      • 47 (60A)
      • 54 (5A)
    • ABS module
    • Wheel speed sensors
    • Stoplamp switch
    • Stability/traction control switch
    • Hill Descent Control™ switch (if equipped)
    • Brake fluid level switch
    • Wiring, terminals or connectors
    • Brake booster vacuum sensor
  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.

    If the cause is not visually evident, connect the scan tool to the DLC  .

  7. NOTE: The 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.
  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 CMDTCs  .
  10. Clear the continuous DTCs and carry out the self-test diagnostics for the ABS module.
  11. If the DTCs retrieved are related to the concern, go to ABS MODULE DTC CHART . For all other DTCs, refer to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES .
  12. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .
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