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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (Anti-Lock Brake System And Stability Control -- F250-F550 Super Duty) >> Diagnosis And Testing >> Anti-Lock Control - Three-Channel >> Pinpoint Tests >> Pinpoint Test D: DTCs C1145 (RF), C1155 (LF) or C1230 (REAR) >> PINPOINT TEST D: DTCs C1145 (RF), C1155 (LF) OR C1230 (REAR)

PINPOINT TEST D: DTCs C1145 (RF), C1155 (LF) OR C1230 (REAR)

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. 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.
  1. D1 CHECK FOR FAULT REPEATABILITY 
    NOTE: Both circuits must be checked for each DTC.
    • Connect the scan tool.
    • Ignition ON.
    • Using a scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs)
    • Drive the vehicle at least 16 km/h (10 mph).
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Is DTC C1145, C1155 or C1230 retrieved? 
      1. Yes  : If the Rotunda Active Wheel Speed Sensor Tester is not available, GO to  D4.

        If the Rotunda Active Wheel Speed Sensor Tester is available, GO to D2.

      2. No  : INSPECT the wheel speed sensors, wheel speed sensor wiring and wheel speed sensor tone rings. REPAIR or INSTALL new as necessary. If any other DTCs are retrieved, REFER to the ABS Module DTC Chart - Three-Channel .
  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 tester and turn the tester power switch to the ON position.
    • Is the module output LED illuminated? 
      1. Yes  : GO to D3.
      2. 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 tester output LEDs illuminate and flash and is the current overload LED not illuminated? 
      1. 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.
      2. 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, Rear Wheel Drive (RWD) , Wheel Speed Sensor - Front, Four Wheel Drive (4WD)  or Wheel Speed Sensor - Rear, Three-Channel . CLEAR the DTCs. REPEAT the self-test.
  4. D4 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO VOLTAGE 
    NOTE: Both circuits must be checked for each DTC.
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Ignition ON.
    • Measure the voltage between the ABS module C135, harness side and ground as follows:
      DTC ABS Module Connector-Pin Circuit
      C1145 C135-3 VCA05 (GY/VT)
      C135-4 RCA19 (VT)
      C1155 C135-27 VCA03 (VT/WH)
      C135-28 RCA17 (YE)
      C1230 C135-35 RCA21 (BN/GN)
      C135-36 VCA07 (BU/OG)
      Fig 1: Measuring Voltage Between ABS Module C135, Harness Side And Ground
      G07479142Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
      1. Yes  : REPAIR the affected circuit(s) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
      2. No  : GO to D5.
  5. D5 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Measure the resistance between the ABS module C135, harness side and ground as follows:
      DTC ABS Module Connector-Pin Circuit
      C1145 C135-3 VCA05 (GY/VT)
      C135-4 RCA19 (VT)
      C1155 C135-27 VCA03 (VT/WH)
      C135-28 RCA17 (YE)
      C1230 C135-35 RCA21 (BN/GN)
      C135-36 VCA07 (BU/OG)
      Fig 2: Measuring Resistance Between ABS Module C135, Harness Side And Ground
      G07479143Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
      1. Yes  : GO to D6.
      2. No  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  6. D6 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR AN OPEN 
    • Measure the resistance between the ABS module C135, harness side and the suspect wheel speed sensor connector, harness side as follows:
      DTC ABS Module Circuit Wheel Speed Sensor
      C1145 C135-3 VCA05 (GY/VT) C160-1
      C135-4 RCA19 (VT) C160-2
      C1155 C135-27 VCA03 (VT/WH) C150-1
      C135-28 RCA17 (YE) C150-2
      C1230 C135-35 RCA21 (BN/GN) C455-2
      C135-36 VCA07 (BU/OG) C455-1
      Fig 3: Measuring Resistance Between ABS Module C135 And Suspect Wheel Speed Sensor Connector
      G07479144Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
      1. Yes  : GO to D7.
      2. No  : REPAIR the open in the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  7. D7 CHECK WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TOGETHER 
    • Measure the resistance between the suspect wheel speed sensor connector, harness side as follows:
      DTC Wheel Speed Sensor Circuit Wheel Speed Sensor
      C1145 C160-1 VCA05 (GY/VT)/RCA19 (VT) C160-2
      C1155 C150-1 VCA03 (VT/WH)/RCA17 (YE) C150-2
      C1230 C455-1 VCA07 (BU/OG)/RCA21 (BN/GN) C455-2
      Fig 4: Measuring Resistance Between Suspect Wheel Speed Sensor Connector, Harness Side
      G07479145Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
      1. Yes  : GO to D8.
      2. No  : REPAIR the affected circuit(s) for a short together. CLEAR the DTCs. REPEAT the self-test.
  8. D8 CHECK THE ABS MODULE OUTPUT 
    • Connect: ABS Module C135.
    • Ignition ON.
    • Measure the voltage between the suspect front wheel speed sensor pins, harness side.
      Fig 5: Measuring Voltage Between Suspect Front Wheel Speed Sensor Pins, Harness Side
      G07397578Courtesy of FORD MOTOR CO.
    • Measure the voltage between the suspect rear wheel speed sensor pins, harness side.
      Fig 6: Measuring Voltage Between Suspect Rear Wheel Speed Sensor Pins
      G06762775Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
      1. Yes  : INSTALL a new wheel speed sensor. REFER to Wheel Speed Sensor - Front, Rear Wheel Drive (RWD) , Wheel Speed Sensor - Front, Four Wheel Drive (4WD)  or Wheel Speed Sensor - Rear, Three-Channel . CLEAR the DTCs. REPEAT the self-test.
      2. No  : GO to D9.
  9. D9 CHECK THE ABS MODULE CONNECTORS 
    • Disconnect the ABS module connector.
    • Check for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect the ABS module connector and make sure that it is seated correctly.
    • 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 . TEST the system for normal operation.
      2. No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.
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