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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 496 (ABS GUIDED ROUTINE)PINPOINT TESTSPINPOINT TESTS ZA: TIRE DIAMETER
2021 Ford Edge SE, 4WD

Pinpoint Tests ZA: Tire Diameter

2021 Ford Edge SE, 4WDSECTION Pinpoint Tests ZA: Tire Diameter
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.
  1. ZA1: CHECK FOR USE OF A TEMPORARY OR MINI-SPARE TIRE 
    • Inspect the vehicle and determine if a temporary spare or a mini-spare tire is currently in use.
    • Is a temporary or mini-spare tire in use on the vehicle? 
      Yes No
      REPAIR or INSTALL a correctly-sized road wheel on the vehicle. Go to  ZA2.
  2. ZA2: CHECK THE TIRE INFLATION PRESSURES 
    • Measure and record the inflation pressure of all 4 tires.
    • Compare the recorded tire pressures to the VC label.
    • Are the tires inflated to the correct pressure according to the VC label? 
  3. ZA3: VERIFY WHEEL AND TIRE SIZES 
    NOTE: Some vehicles may have a larger set of wheels and tires on the rear axle when compared to the front axle. This is acceptable as long as the 2 tires on the same axle are a matched set.
    • 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.
      • If the vehicle has a larger set of rear wheels and tires, then only compare the set of tires from the same axle. Do not compare the front tires to the rear tires.
    • 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 or each pair on each axle? 
      Yes No
      The condition causing the concern is not present at this time.
      The tire diameter monitor in the ABS module clears and resets with each ignition cycle. The concern may have been repaired without the customer realizing. If a temporary or mini-spare tire was in use and the customer installed the repaired road wheel, then the condition is unlikely to return in the service bay.      		 INSTALL correctly sized or correctly paired wheels and tires.
  4. ZA4: 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
      INSTALL correctly-sized wheels or tires. Go to  ZA5.
  5. ZA5: CHECK THE SERVICE HISTORY 
    • Check the service history for recent service actions related to the BCM.
    • Are any recent service actions with the BCM indicated? 
      Yes No
      Go to  ZA7. Go to  ZA6.
  6. ZA6: CHECK FOR COMMUNICATION DTCS 
    • Ignition ON, engine OFF.

      Carry out the ABS self-test.

    • Are any lost communication or invalid data DTCs present in the ABS module? 
      Yes No
      DIAGNOSE these DTCs before diagnosing DTC C0078:xx. REFER to the ABS Module DTC Chart. Go to  ZA8.
  7. ZA7: CONFIGURE THE BCM MODULE 
    • Ignition ON, engine OFF.
    • Carry out the programming procedure as directed by the diagnostic scan tool.
    • Clear the ABS DTCs.
    • Ignition OFF.
    • Ignition ON, engine OFF.

      Carry out the ABS self-test.

    • Is the DTC still present? 
      Yes No
      Go to  ZA8. The system is operating correctly. The concern was caused by an incomplete or improper programming session.
  8. ZA8: CHECK FOR CORRECT BCM MODULE OPERATION 
    • Ignition OFF.
    • Disconnect all BCM electrical connectors.
    • Using a good light source, inspect all electrical connectors for the following:
      • corrosion - install new connector or terminal and clean the module pins
      • damaged or bent pins - install new terminals or pins
      • pushed-out pins - install new pins as necessary
      • spread terminals - install new terminals as necessary
    • Connect all BCM electrical connectors. Make sure the connectors seat and latch correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
      Yes No
      INSTALL a new BCM.
      CHECK OASIS for any service articles: TSB, GSB, SSM or FSA.
      If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions.
      If no service articles address this concern, INSTALL a new BCM. REFER to the Multifunction Electronic Modules article.
      ORDER a replacement BCM and INCLUDE the RVC on the form.
      If this is a Ford paid repair, INCLUDE the RVC on the warranty claim form.      		 The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
RENDER: 1.0x

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