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Home >> Ford >> 2019 >> Mustang EcoBoost, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 492 (Abs Guided Routine) >> Pinpoint Tests >> Pinpoint Tests BT: ABS False Activation, ABS Too Sensitive, ABS Activates On Normal Stop >> Possible Causes
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Possible Causes

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: PSCM-A (-A) Connector - C1463A
G09694751Courtesy of FORD MOTOR CO.

Harness Side

Fig 2: PSCM-B (-B) Connector - C1463B
G11676842Courtesy of FORD MOTOR CO.

Harness Side

  1. BT1: CHECK THE STEERING COLUMN 
    • Inspect the steering column and steering wheel for correct installation and any observable damage. REFER to the appropriate Removal and Installation procedures in the Steering Column article.
    • Are the steering column and steering wheel installed correctly and free from any observable damage? 
      Yes No
      Go to  BT2. REPAIR any damage found or INSTALL a new component as necessary. TEST DRIVE the vehicle at speeds greater than 20 km/h (12 mph) and make at least 1 left turn and 1 right turn.
      If the condition does not return, the repair is complete.
      If the condition returns,
  2. BT2: VERIFY CORRECT WHEELS AND TIRES 
    • Verify the wheels and tires are the correct size as indicated on the VC label.
    • With the transmission in NEUTRAL, position the vehicle on a hoist. Refer to the Jacking and Lifting article.
    • Using a flexible tape measure, string or similar item, measure and record the circumference of each tire and compare them to each other.
    • Are the wheels and tires the correct size as indicated on the VC label and are the circumferences of all tires within 12.7 mm (0.5 in) of each other? 
      Yes No
      Go to  BT3. INSTALL new wheels or tires as necessary. TEST DRIVE the vehicle at speeds greater than 20 km/h (12 mph) and make at least 1 left turn and 1 right turn.
      If the condition does not return, the repair is complete.
      If the condition returns,
      Go to  BT3.
  3. BT3: CHECK THE SUSPENSION COMPONENTS 
    • Remove all the wheels.
    • Inspect the following components for any observable damage:
      • Front wheel bearings and wheel hubs
      • Front wheel knuckles and spindles
      • Ball joints
      • Front axle shafts
      • Front axle shaft CV-joints or U-joints
      • Front wheel speed sensor encoder rings
      • Front wheel speed sensors
      • Rear wheel hubs
      • Rear wheel speed sensor encoder rings
      • Rear wheel speed sensors
    • Are any components noticeably damaged? 
      Yes No
      REPAIR any damage found or INSTALL a new component as necessary. TEST DRIVE the vehicle at speeds greater than 20 km/h (12 mph) and make at least 1 left turn and 1 right turn.
      If the condition does not return, the repair is complete.
      If the condition returns,
      Go to  BT4.      		 Go to  BT4.
  4. BT4: CHECK THE PARKING BRAKE SHOE ADJUSTMENT 
    • Verify the parking brake shoes are correctly adjusted. Refer to Parking Brake Shoe Adjustment procedure in the Parking Brake and Actuation article.
    • Are the parking brake shoes adjusted correctly? 
      Yes No
      DIAGNOSE the EPAS column. REFER to the Symptom Chart in the Power Steering article. REPAIR any damage found or INSTALL a new component as necessary.
      TEST DRIVE the vehicle at speeds greater than 20 km/h (12 mph) and make at least 1 left turn and 1 right turn.
      If the condition does not return, the repair is complete.
      If the condition returns, DIAGNOSE the EPAS column.
      REFER to the Symptom Chart in the Power Steering article.
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