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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 785 (Anti-Lock Brake System - Anti-Lock Control) >> Diagnosis And Testing >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test B: DTC C1145 (RF), DTC C1155 (LF), DTC C1230 (REAR) >> Testing

Pinpoint Test B: DTC C1145 (RF), DTC C1155 (LF), DTC C1230 (REAR): Testing

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK FOR ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS 
    • Connect the diagnostic tool.
    • Key in ON position.

      Retrieve and record the ABS module DTCs.

    • Are any DTCs present? 
  2. B2 CHECK THE ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE OUTPUT 
    • Key in OFF position.
    • Disconnect: ABS Module C135.
    • Measure the resistance between the ABS module C135 pins as follows:
      ABS MODULE C135 CONNECTOR SPECIFICATIONS

      Connector-Pin Circuit Connector-Pin Circuit
      5 516 (YE/BK) 13 514 (YE/RD)
      4 522 (TN/BK) 12 521 (TN/OG)
      14 523 (RD/PK) 6 519 (LG/BK)
    • Are the resistances between 800 and 1400 ohms for the front, and between 800 and 2500 ohms for the rear? 
    • Yes  : GO to B3.
    • No  : REPAIR the circuit(s) in question. TEST the system for normal operation.
  3. B3 CHECK WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO POWER 
    NOTE: Both circuits must be checked for each DTC.
    • Key in OFF position.
    • Disconnect: ABS Module C135.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Key in ON position.
    • Measure the voltage between the ABS module C135, harness side and ground, as follows:
      ABS MODULE C135 CONNECTOR SPECIFICATIONS

      Connector-Pin Circuit
      C135 pin 5 516 (YE/BK)
      C135 pin 13 514 (YE/RD)
      C135 pin 4 522 (TN/BK)
      C135 pin 12 521 (TN/OG)
      C135 pin 6 519 (LG/BK)
      C135 pin 14 523 (RD/PK)
      Fig 1: Measuring Voltage Between ABS Module C135 And Ground
      G03891568Courtesy of FORD MOTOR CO.
    • Is voltage present? 
    • Yes  : REPAIR the circuit(s) in question. CLEAR the DTCs. TEST the system for normal operation.
    • No  : GO to B4.
  4. B4 CHECK WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO GROUND 
    NOTE: Both circuits must be checked for each DTC.
    • Key in OFF position.
    • Measure the resistance between the ABS module C135 harness side and ground, as follows:
      ABS MODULE C135 CONNECTOR SPECIFICATIONS

      Connector-Pin Circuit
      C135 pin 5 516 (YE/BK)
      C135 pin 13 514 (YE/RD)
      C135 pin 4 522 (TN/BK)
      C135 pin 12 521 (TN/OG)
      C135 pin 6 519 (LG/BK)
      C135 pin 14 523 (RD/PK)
      Fig 2: Measuring Resistance Between ABS Module C135 And Ground
      G03891569Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes  : GO to B5.
    • No  : REPAIR the circuit(s) in question. CLEAR the DTCs. TEST the system for normal operation.
  5. B5 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR AN OPEN 
    NOTE: Both circuits must be checked for each DTC.
    • Measure the resistance between ABS module C135, harness side and the suspected front wheel speed sensor connector pins, harness side, as follows:
      ABS MODULE C135 CONNECTOR SPECIFICATIONS

      Connector-Pin Circuit Wheel Speed Sensor Connector Pin
      C135 pin 5 516 (YE/BK) C160 pin 2
      C135 pin 13 514 (YE/RD) C160 pin 1
      C135 pin 4 522 (TN/BK) C150 pin 2
      C135 pin 12 521 (TN/OG) C150 pin 1
      Fig 3: Measuring Resistance Between ABS Module C135, Harness Side And Front Wheel Speed Sensor Connector Pins
      G03891570Courtesy of FORD MOTOR CO.
    • Measure the resistance between ABS module C135, harness side and the rear wheel speed sensor C455 harness side, as follows:
      ABS MODULE C135 CONNECTOR SPECIFICATIONS

      Circuit Connector-Pin Connector-Pin
      519 (LG/BK) C135 pin 6 C455 pin 2
      523 (RD/PK) C135 pin 14 C455 pin 1
      Fig 4: Measuring Resistance Between ABS Module C135 And Rear Wheel Speed Sensor C455
      G03891571Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes  : GO to B6.
    • No  : REPAIR the circuit(s) in question. CLEAR the DTCs. TEST the system for normal operation.
  6. B6 CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS 
    NOTE: For this test you must use the megaohm scale on the meter to get the correct resistance reading.
    • Measure the resistance between the suspect front wheel speed sensor pins, harness side.
      Fig 5: Measuring Resistance Between Suspect Front Wheel Speed Sensor Pins, Harness Side
      G03891572Courtesy of FORD MOTOR CO.
    • Measure the resistance between the rear wheel speed sensor pins, harness side.
      Fig 6: Measuring Resistance Between Rear Wheel Speed Sensor Pins, Harness Side
      G03891573Courtesy of FORD MOTOR CO.
    • Are there any resistance readings? 
    • Yes  : REPAIR the circuit(s) in question. CLEAR the DTCs. TEST the system for normal operation.
    • No  : GO to B7.
  7. B7 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect all ABS connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all ABS connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . 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. TEST the system for normal operation.
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