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Home >> Ford >> 2013 >> Fiesta Titanium, 4D Hatchback, Standard Trans >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Anti-Lock Brake System And Stability Control >> Diagnosis And Testing >> Principles of Operations >> Pinpoint Tests >> Pinpoint Test D: DTCs C0031:01; C0034:01; C0037:01, C003A:01, C0031:19, C0034:19, C0037:19, C003A:19 >> PINPOINT TEST D: DTCs C0031:01; C0034:01; C0037:01, C003A:01, C0031:19, C0034:19, C0037:19, C003A:19

PINPOINT TEST D: DTCs C0031:01; C0034:01; C0037:01, C003A:01, C0031:19, C0034:19, C0037:19, C003A:19

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. D1 CHECK FOR FAULT REPEATABILITY 
    • Ignition ON.
    • Using the scan tool, clear the ABS module DTCs.
    • Drive the vehicle at least 20 km/h (12 mph).
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Is the concern still present? 
      • Yes  : If the Rotunda Active Wheel Speed Sensor Tester is available, GO to  D2. If the Rotunda Active Wheel Speed Sensor Tester is not available, GO to  D4.
      • No  : INSPECT the wheel speed sensors, wheel speed sensor wiring and wheel bearing magnetic strip. REPAIR or INSTALL new as necessary. If any other DTCs are retrieved, REFER to ABS Module DTC Chart .
  2. D2 CHECK THE ABS MODULE OUTPUT USING THE ROTUNDA ACTIVE WHEEL SPEED SENSOR TESTER 
    • Ignition OFF.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Connect the Rotunda Active Wheel Speed Sensor Tester to the wheel speed sensor connectors.
    • Ignition ON.
    • Select the correct system polarity on the Rotunda Active Wheel Speed Sensor Tester and turn the power switch to the ON position.
    • Is the module output LED illuminated? 
      • Yes  : GO to  D3.
      • No  : GO to  D6.
  3. D3 CHECK THE WHEEL SPEED SENSOR OUTPUT WITH THE ROTUNDA ACTIVE WHEEL SPEED SENSOR TESTER 
    • Raise the suspect wheel until it can spin freely. Refer to JACKING & LIFTING .
    • While monitoring the Rotunda 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. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
      • No  : If the current level LED is not illuminated and the sensor output LEDs do not illuminate or if the current level LED is illuminated red, INSTALL a new wheel speed sensor. REFER to Wheel Speed Sensor - Front  or Wheel Speed Sensor - Rear . CLEAR the DTCs. REPEAT the self-test.

        If the current level LED is not illuminated and the sensor output LEDs illuminate green, but do not flash, INSPECT the wheel bearing magnetic strip and INSTALL new if necessary. If the wheel bearing magnetic strip is OK, INSTALL a new wheel speed sensor. REFER to Wheel Speed Sensor - Front  or Wheel Speed Sensor - Rear . CLEAR the DTCs. REPEAT the self-test.

  4. D4 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.
    • For DTC C0031:01, 19 (LF)  , measure the voltage between:
      • ABS module C135-45, circuit VCA03 (VT/WH), harness side and ground.
      • ABS module C135-46, circuit RCA17 (YE), harness side and ground.
      Fig 1: Measuring Voltage Between ABS Module C135-45, Circuit VCA03 (VT/WH), Harness Side And Ground
      G06938851Courtesy of FORD MOTOR CO.
    • For DTC C0034:01, 19 (RF)  , measure the voltage between:
      • ABS module C135-33, circuit RCA19 (VT), harness side and ground.
      • ABS module C135-34, circuit VCA05 (GY/VT), harness side and ground.
      Fig 2: Measuring Voltage Between ABS Module C135-33, Circuit RCA19 (VT), Harness Side And Ground
      G06938852Courtesy of FORD MOTOR CO.
    • For DTC C0037:01, 19 (LR)  , measure the voltage between:
      • ABS module C135-36, circuit VCA04 (BU/OG), harness side and ground.
      • ABS module C135-37, circuit RCA18 (BN/GN), harness side and ground.
      Fig 3: Measuring Voltage Between ABS Module C135-36, Circuit VCA04 (BU/OG), Harness Side And Ground
      G06938853Courtesy of FORD MOTOR CO.
    • For DTC C003A:01, 19 (RR)  , measure the voltage between:
      • ABS module C135-42, circuit RCA20 (BN), harness side and ground.
      • ABS module C135-43, circuit VCA06 (WH/OG), harness side and ground.
      Fig 4: Measuring Voltage Between ABS Module C135-42, Circuit RCA20 (BN), Harness Side And Ground
      G06938854Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
      • Yes  : REPAIR the affected circuit(s) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
      • No  : GO to  D5.
  5. D5 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • For DTC C0031:01, 19 (LF)  , measure the resistance between:
      • ABS module C135-45, circuit VCA03 (VT/WH), harness side and ground.
      • ABS module C135-46, circuit RCA17 (YE), harness side and ground.
      Fig 5: Measuring Resistance Between ABS Module C135-45, Circuit VCA03 (VT/WH), Harness Side And Ground
      G06938855Courtesy of FORD MOTOR CO.
    • For DTC C0034:01, 19 (RF)  , measure the resistance between:
      • ABS module C135-34, circuit VCA05 (GY/VT), harness side and ground.
      • ABS module C135-33, circuit RCA19 (VT), harness side and ground.
      Fig 6: Measuring Resistance Between ABS Module C135-34, Circuit VCA05 (GY/VT), Harness Side And Ground
      G06938856Courtesy of FORD MOTOR CO.
    • For DTC C0037:01, 19 (LR)  , measure the resistance between:
      • ABS module C135-36, circuit VCA04 (BU/OG), harness side and ground.
      • ABS module C135-37, circuit RCA18 (BN/GN), harness side and ground.
      Fig 7: Measuring Resistance Between ABS Module C135-36, Circuit VCA04 (BU/OG), Harness Side And Ground
      G06938857Courtesy of FORD MOTOR CO.
    • For DTC C003A:01, 19 (RR)  , measure the resistance between:
      • ABS module C135-43, circuit VCA06 (WH/OG), harness side and ground.
      • ABS module C135-42, circuit RCA20 (BN), harness side and ground.
      Fig 8: Measuring Resistance Between ABS Module C135-43, Circuit VCA06 (WH/OG), Harness Side And Ground
      G06938858Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
      • Yes  : GO to  D6.
      • No  : REPAIR the affected circuit(s) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
  6. D6 CHECK THE WHEEL SPEED CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: ABS Module C135 (if not previously disconnected).
    • Disconnect: Suspect Wheel Speed Sensor (if not previously disconnected).
    • Measure the resistance between ABS module connector C135, harness side and the suspect wheel speed sensor connector, harness side as indicated in the following chart:
      DTC ABS Module Circuit Wheel Speed Sensor
      C0031:01, 19 C135-45 VCA03 (VT/WH) C150-1
      C135-46 RCA17 (YE) C150-2
      C0034:01, 19 C135-34 VCA05 (GY/VT) C160-1
      C135-33 RCA19 (VT) C160-2
      C0037:01, 19 C135-36 VCA04 (BU/OG) C440-1
      C135-37 RCA18 (BN/GN) C440-2
      C003A:01, 19 C135-43 VCA06 (WH/OG) C426-1
      C135-42 RCA20 (BN) C426-2
      Fig 9: Measuring Resistance Between ABS Module Connector C135, Harness Side And Suspect Wheel Speed Sensor Connector
      G07978123Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
      • Yes  : GO to  D7.
      • No  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  7. D7 CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS 
    • Measure the resistance between the suspect wheel speed sensor connector pins, harness side as follows:
      DTC Connector-Pin/ Circuit Connector-Pin/ Circuit
      C0031:01, 19 C150-1 VCA03 (VT/WH) C150-2 RCA17 (YE)
      C0034:01, 19 C160-1 VCA05 (GY/VT) C160-2 RCA19 (VT)
      C0037:01, 19 C440-1 VCA04 (BU/OG) C440-2 RCA18 (BN/GN)
      C003A:01, 19 C426-1 VCA06 (WH/OG) C426-2 RCA20 (BN)
      Fig 10: Measuring Resistance Between Suspect Wheel Speed Sensor Connector Pins, Harness Side
      G07978124Courtesy of FORD MOTOR CO.
    • Is the resistance greater 10, 000 ohms? 
      • Yes  : GO to  D8.
      • No  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  8. D8 CHECK FOR CORRECT ABS MODULE OUTPUT 
    • Connect: ABS Module C135.
    • Ignition ON.
    • Measure the voltage between the suspect wheel speed sensor connector pins, harness side as follows:
      DTC Connector-Pin/ Circuit Connector-Pin/ Circuit
      C0031:01, 19 C150-1 VCA03 (VT/WH) C150-2 RCA17 (YE)
      C0034:01, 19 C160-1 VCA05 (GY/VT) C160-2 RCA19 (VT)
      C0037:01, 19 C440-1 VCA04 (BU/OG) C440-2 RCA18 (BN/GN)
      C003A:01, 19 C426-1 VCA06 (WH/OG) C426-2 RCA20 (BN)
      Fig 11: Measuring Voltage Between Suspect Wheel Speed Sensor Connector Pins, Harness Side
      G07978114Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
  9. D9 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect: ABS Module C135.
    • Check for:
      • corrosion
      • pushed-out pins
      • spread terminals
    • Connect: ABS Module C135.
    • Make sure the connector is seated correctly, then operate the system and verify the concern is still present.
    • Is the concern still present? 
      • Yes  : INSTALL a new ABS module. REFER to Hydraulic Control Unit (HCU) . TEST the system for normal operation.
      • 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.
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