Inspection and Verification

2005 Ford Taurus SEL, 4D SedanSECTION Inspection and Verification
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If a new ABS module is installed, it must be configured. Follow the diagnostic tool directions.
  1. Verify the customer concern.
  2. Verify the stoplamps operate correctly by applying and releasing the brake pedal with the ignition switch in the OFF position. 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 instrument cluster. If the PRNDL does not operate correctly, refer to INSTRUMENT CLUSTER . If the PRNDL operates correctly, proceed to the next step.
  4. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION TABLE

    Mechanical Electrical
    • Wheel speed sensor ring
    • Hydraulic control unit (HCU)
    • Base brake system
    • Brake booster vacuum hose
    • Steering components and suspension components
    • Tire size
    • Battery junction box (BJB) fuse(s):
      • 19 (40A)
      • 22 (40A)
    • Smart junction box (SJB) fuse(s):
      • 6 (15A)
      • 34 (5A)
    • Anti-lock brake system (ABS) module
    • Wheel speed sensor
    • Stoplamp switch
    • Brake pressure transducer
    • Brake fluid level switch
    • Circuitry
  5. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  6. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  7. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • CAN circuit fault; all electronic control units no response/not equipped, refer to MODULE COMMUNICATIONS NETWORK .
    • No response/not equipped for the ABS module, GO to PINPOINT TEST AΒ .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the ABS module.
  8. If the DTCs retrieved are related to the concern, go to the ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEXΒ .
  9. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHARTΒ .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.