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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (Anti-Lock Brake System & Stability Control) >> Diagnosis And Testing >> Anti-Lock Control - Four-Channel >> Pinpoint Tests >> Pinpoint Test R: DTCs C0020:15, C0020:71 >> PINPOINT TEST R: DTCs C0020:15 AND C0020:71

PINPOINT TEST R: DTCs C0020:15 AND C0020:71

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Failure to disconnect the battery when instructed results in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .
  1. R1 CHECK THE PUMP MOTOR (PMP_MOTOR) ACTIVE COMMAND 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
    • Toggle the PMP_MOTOR active command ON.
    • Listen for the ABS pump motor noise, does the ABS pump motor run for approximately 2 seconds? 
    1. Yes  : GO to R2.
    2. No  : TOGGLE the PMP_MOTOR active command OFF. GO to  R3.
  2. R2 CHECK FOR FAULT REPEATABILITY 
    • Drive the vehicle at speeds greater than 20 km/h (12 mph).
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Is DTCs C0020:15 or C0020:71 retrieved? 
    1. Yes  : GO to R3.
    2. No  : The concern may have been caused by a loose or corroded connector. The system is operating correctly at this time.
  3. R3 CHECK THE ABS MODULE GROUND EYELET AT THE CHASSIS 
    • Ignition OFF.
    • Remove the bolt retaining G135 on the LH frame rail.
      • Clean the body mating surface and ground eyelets.
      • Install the ground eyelet to the chassis with the retaining bolt.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Is DTCs C0020:15 or C0020:71 retrieved? 
    1. Yes  : GO to R4.
    2. No  : The concern was caused by a loose or corroded connector. CLEAR the DTCs. REPEAT self-test.
  4. R4 CHECK THE PUMP MOTOR VOLTAGE SUPPLY TO THE ABS MODULE 
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Measure the voltage between ABS module C135-1, circuit SBB96 (VT/RD), harness side and ground.
      Fig 1: Measuring Voltage Between ABS Module C135-1, Circuit SBB96 (VT/RD), Harness Side And Ground
      G08596591Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to R5.
    2. No  : VERIFY that BJB fuse 96 (50A) is OK. If OK, REPAIR circuit SBB96 (VT/RD). If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the cause of the circuit short. CLEAR the DTCs and REPEAT the self-test.
  5. R5 CHECK THE ABS MODULE GROUND CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Battery Negative Cable.
    • Measure the resistance between ABS module C135-13, circuit GD163 (BK/GY) harness side and ground; and between the ABS module C135-38, circuit GD163 (BK/GY), harness side and ground.
      Fig 2: Checking ABS Module Ground Circuits For An Open
      G08596592Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to R6.
    2. No  : REPAIR circuit GD163 (BK/GY) for an open. CLEAR the DTCs. REPEAT the self-test.
  6. R6 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect: ABS Module.
    • Check for:
      • corrosion
      • pushed-out pins.
      • spread terminals
    • Connect: ABS Module.
    • Make sure the connector is seated correctly, then operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes  : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . GO to R7.
    2. No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
  7. R7 CHECK FOR FAULT REPEATABILITY 
    • DRIVE the vehicle at speeds greater than 20 km/h (12 mph).
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Are DTCs C0020:15 or C0020:71 retrieved? 
    1. Yes  : INSTALL a new HCU. REFER to HYDRAULIC CONTROL UNIT (HCU) . TEST the system for normal operation.
    2. No  : The repairs are complete. The system is operating correctly at this time.
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