LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2014 >> Flex SEL, FWD >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brake System (Abs) And Stability Control >> Diagnosis And Testing >> Anti-Lock Brake System (ABS) and Stability Control >> Diagnostic Routines >> Pinpoint Test F: Wheel Speed Sensor Electrical Fault DTCs - Rear >> PINPOINT TEST F: WHEEL SPEED SENSOR ELECTRICAL FAULT DTCs - REAR

PINPOINT TEST F: WHEEL SPEED SENSOR ELECTRICAL FAULT DTCs - REAR

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.
  1. F1 CHECK FOR FAULT REPEATABILITY 
    • Ignition ON.
    • Using a scan tool, clear all ABS module DTCs.
    • Test drive the vehicle above 20 km/h (12 mph) for at least 1 minute.
    • Bring the vehicle to a safe stop.
    • Ignition OFF.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.

    Is the DTC still present? 

    • Yes  : If the vehicle is  equipped with active park assist, GO to  F4.

      If the vehicle is not  equipped with active park assist and  the Rotunda ABS Active Wheel Speed Sensor Tester is not  available, GO to  F4.

      If the vehicle is not  equipped with active park assist and  the Rotunda ABS Active Wheel Speed Sensor Tester is  available, GO to F2  .

    • No  : The system is operating correctly at this time. INSPECT both rear wheel speed sensor electrical connectors and the ABS module electrical connector. REPAIR or CLEAN the connector as necessary. ADDRESS the root cause of any connector or pin issues.

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

  2. F2 CHECK THE ABS MODULE OUTPUT USING THE ROTUNDA ABS ACTIVE WHEEL SPEED SENSOR TESTER 
    • Ignition OFF.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Connect the Rotunda ABS Active Wheel Speed Sensor Tester to the wheel speed sensor connectors.
    • Ignition ON.
    • Select the correct system polarity on the Rotunda ABS Active Wheel Speed Sensor Tester and turn the power switch to the ON position.

    Is the tester output LED illuminated? 

    • Yes  : GO to F3  .
    • No  : GO to  F5.
  3. F3 CHECK THE WHEEL SPEED SENSOR OUTPUT WITH THE ROTUNDA ABS ACTIVE WHEEL SPEED SENSOR TESTER 
    • Raise the suspect wheel until it can spin freely. REFER to Lifting Points in JACKING & LIFTING .
    • While monitoring the Rotunda ABS Active Wheel Speed Sensor Tester, slowly spin the suspect wheel.

    Do the sensor output LEDs illuminate and flash and is the current overload LED not illuminated? 

    • Yes  : The system is operating correctly at this time. INSPECT all wheel speed sensor electrical connectors and the ABS module electrical connectors. REPAIR or CLEAN the connector as necessary. ADDRESS the root cause of any connector or pin issues.

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

    • No  : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - REAR .

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

  4. F4 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO BATTERY VOLTAGE 
    • Ignition OFF.
    • Disconnect: ABS Module C135  .
    • Disconnect: Suspect Wheel Speed Sensor.
    • Ignition ON.
    • Measure the voltage  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      LR Wheel Speed Sensor 
      C3117-1  VCA04 (BU/OG) - Ground
      C3117-2  RCA18 (BN/GN) - Ground
      RR Wheel Speed Sensor 
      C3116-1  VCA06 (WH/OG) - Ground
      C3116-2  RCA20 (BN) - Ground
      Fig 1: Identifying LR And RR Wheel Speed Sensor Connector Terminals (C3116 And C3117)
      G09567999Courtesy of FORD MOTOR CO.

    Is any voltage present? 

    • Yes  : REPAIR the affected circuit(s).

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

    • No  : GO to F5  .
  5. F5 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      LR Wheel Speed Sensor 
      C135-31  VCA04 (BU/OG) C3117-1  VCA04 (BU/OG)
      C135-18  RCA18 (BN/GN) C3117-2  RCA18 (BN/GN)
      RR Wheel Speed Sensor 
      C135-17  VCA06 (WH/OG) C3116-1  VCA06 (WH/OG)
      C135-29  RCA20 (BN) C3116-2  RCA20 (BN)
      Fig 2: Identifying LR And RR Wheel Speed Sensor Connector Terminals (C135, C3117 And C3116)
      G08624661Courtesy of FORD MOTOR CO.

    Are the resistances less than 3 ohms? 

    • Yes  : GO to F6  .
    • No  : REPAIR the affected circuit(s).

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

  6. F6 CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS 
    • Measure the resistance  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      LR Wheel Speed Sensor 
      C3117-1  VCA04 (BU/OG) C3117-2  RCA18 (BN/GN)
      RR Wheel Speed Sensor 
      C3116-1  VCA06 (WH/OG) C3116-2  RCA20 (BN)
      Fig 3: Identifying LR And RR Wheel Speed Sensor Connector Terminals (C3116 And C3117)
      G09568001Courtesy of FORD MOTOR CO.

    Is the resistance greater 10, 000 ohms? 

    • Yes  : GO to F7  .
    • No  : REPAIR the affected circuit(s).

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

  7. F7 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO GROUND 
    • Measure the resistance  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      LR Wheel Speed Sensor 
      C3117-1  VCA04 (BU/OG) - Ground
      C3117-2  RCA18 (BN/GN) - Ground
      RR Wheel Speed Sensor 
      C3116-1  VCA06 (WH/OG) - Ground
      C3116-2  RCA20 (BN) - Ground
      Fig 4: Identifying LR And RR Wheel Speed Sensor Connector Terminals (C3116 And C3117)
      G09568002Courtesy of FORD MOTOR CO.

    Are the resistances greater than 10, 000 ohms? 

    • Yes  : GO to F8  .
    • No  : REPAIR the affected circuit(s).

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

  8. F8 CHECK THE ABS MODULE OUTPUT 
    NOTE: Make sure all test connections are made at the wheel speed sensor before the ignition is set to ON.
    NOTE: Use a meter with a min/max feature and/or recording capabilities to obtain accurate measurements. The ABS module disables the voltage output immediately when the wheel speed sensor is not present.
    • Connect: ABS Module C135  .
    • Connect the meter to the suspect wheel speed sensor electrical connector pins, harness side.
    • Set the meter to measure DC voltage.
    • Set the meter range to greater than 15 volts.
    • Enable the min/max or recording feature.
    • Ignition ON.
    • Measure the voltage  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      LR Wheel Speed Sensor 
      C3117-1  VCA04 (BU/OG) - Ground
      RR Wheel Speed Sensor 
      C3116-1  VCA06 (WH/OG) - Ground
      Fig 5: Identifying LR And RR Wheel Speed Sensor Connector Terminals (C3116 And C3117)
      G09568003Courtesy of FORD MOTOR CO.
    • Check the maximum recorded voltage on the meter.

    Is the voltage between 10 and 16 volts? 

    • Yes  : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - REAR .

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

    • No  : GO to F9  .
  9. F9 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Inspect the ABS module electrical connector.
    • Repair:
      • corrosion (install new connector or terminal - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Connect: ABS Module C135  .
    • Connect: Suspect Wheel Speed Sensor.
    • Make sure the connectors seat and latch correctly, then operate the system and determine if the concern is still present.

    Is the concern still present? 

    • Yes  : CHECK OASIS  for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions.

      If no TSBs address this concern, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE .

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

    • No  : 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.

      CYCLE the ignition. DRIVE the vehicle for at least 1 minute at speeds above 20 km/h (12 mph).

scientia non olet · About LEMON Manuals