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Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Anti-Lock Brake System And Stability Control >> Diagnosis And Testing >> Anti-Lock Control - Non-Hybrid >> Pinpoint Tests >> Pinpoint Test C: DTCs C1145, C1155, C1165 and C1175 >> PINPOINT TEST C: DTCs C1145, C1155, C1165 AND C1175

PINPOINT TEST C: DTCs C1145, C1155, C1165 AND C1175

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. C1 CHECK FOR FAULT REPEATABILITY 
    • Connect the scan tool.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Clear the ABS module DTCs.
    • Drive the vehicle at least 16 km/h (10 mph).
    • Retrieve and record the ABS module DTCs.
    • Is DTC C1145, C1155, C1165 or C1175 retrieved? 
      • Yes:  For DTC C1145 or C1155, if the Rotunda Active Wheel Speed Sensor Tester is available, GO to C2.

        For DTC C1165 or C1175, or if the Rotunda Active Wheel Speed Sensor Tester is not available, GO to  C4.

      • 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, GO to the ABS Module DTC Chart .
  2. C2 CHECK THE ABS MODULE OUTPUT USING THE ROTUNDA ACTIVE WHEEL SPEED SENSOR TESTER 
    NOTE: The front wheel speed sensor electrical connectors are located behind the wheel well splash shields. The rear wheel speed sensor electrical connectors are located under the rear seat cushion.
    • 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 C3.
      • No:  GO to  C6.
  3. C3 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, FRONT WHEEL DRIVE (FWD)  . 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 speed sensor tone ring and INSTALL new if necessary. If the tone ring is OK, INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT  or WHEEL SPEED SENSOR - REAR, FRONT WHEEL DRIVE (FWD)  . CLEAR the DTCs. REPEAT the self-test.

  4. C4 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO VOLTAGE 
    NOTE: No measurements should be taken with the wheel speed sensor connected. Damage to the wheel speed sensor results.
    NOTE: Both circuits must be checked for each DTC.
    NOTE: The degas bottle may need to be positioned aside to access the ABS module connector.
    NOTE: The front wheel speed sensor electrical connectors are located behind the wheel well splash shields. The rear wheel speed sensor electrical connectors are located under the rear seat cushion.
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Ignition ON.
    • For DTC C1145  , measure the voltage between ground and:
      • ABS module C135-34, circuit VCA05 (GY/VT), harness side.
      • ABS module C135-33, circuit RCA19 (VT), harness side.
        Fig 1: Checking Wheel Speed Sensor Circuits For Short To Voltage
        G06094497Courtesy of FORD MOTOR CO.
    • For DTC C1155  , measure the voltage between ground and:
      • ABS module C135-45, circuit VCA03 (VT/WH), harness side.
      • ABS module C135-46, circuit RCA17 (YE), harness side.
        Fig 2: Measuring Voltage Between ABS Module C135-45, C135-46 And Ground
        G06094498Courtesy of FORD MOTOR CO.
    • For DTC C1165  , measure the voltage between ground and:
      • ABS module C135-43, circuit VCA06 (WH/OG), harness side.
      • ABS module C135-42, circuit RCA20 (BN), harness side.
        Fig 3: Measuring Voltage Between ABS Module C135-43, C135-42 And Ground
        G06094499Courtesy of FORD MOTOR CO.
    • For DTC C1175  , measure the voltage between ground and:
      • ABS module C135-36, circuit VCA04 (BU/OG), harness side.
      • ABS module C135-37, circuit RCA18 (BN/GN), harness side.
        Fig 4: Measuring Voltage Between ABS Module C135-36, C135-37 And Ground
        G06094500Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
      • Yes:  REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
      • No:  GO to C5.
  5. C5 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO GROUND 
    NOTE: Both circuits must be checked for each DTC.
    • Ignition OFF.
    • For DTC C1145  , measure the resistance between ground and:
      • ABS module C135-34, circuit VCA05 (GY/VT), harness side.
      • ABS module C135-33, circuit RCA19 (VT), harness side.
        Fig 5: Measuring Resistance Between ABS Module C135-34, C135-33 And Ground
        G06094501Courtesy of FORD MOTOR CO.
    • For DTC C1155  , measure the resistance between ground and:
      • ABS module C135-45, circuit VCA03 (VT/WH), harness side.
      • ABS module C135-46, circuit RCA17 (YE), harness side.
        Fig 6: Measuring Resistance Between ABS Module C135-45, C135-46 And Ground
        G06094502Courtesy of FORD MOTOR CO.
    • For DTC C1165  , measure the resistance between ground and:
      • ABS module C135-43, circuit VCA06 (WH/OG), harness side.
      • ABS module C135-42, circuit RCA20 (BN), harness side.
        Fig 7: Checking Wheel Speed Sensor Circuits For Short To Ground (RR)
        G06257038Courtesy of FORD MOTOR CO.
    • For DTC C1175  , measure the resistance between ground and:
      • ABS module C135-36, circuit VCA04 (BU/OG), harness side.
      • ABS module C135-37, circuit RCA18 (BN/GN), harness side.
        Fig 8: Measuring Resistance Between ABS Module C135-36, C135-37 And Ground
        G06094504Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
      • Yes:  GO to C6.
      • No:  REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  6. C6 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR AN OPEN 
    NOTE: Both circuits must be checked for each DTC.
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Measure the resistance between ABS module C135, harness side and the suspect wheel speed sensor connector, harness side as indicated in the following chart:
      ABS Module Circuit Wheel Speed Sensor
      DTC C1145 
      C135-34 VCA05 (GY/VT) C160-1
      C135-33 RCA19 (VT) C160-2
      DTC C1155 
      C135-45 VCA03 (VT/WH) C150-1
      C135-46 RCA17 (YE) C150-2
      DTC C1165 
      C135-43 VCA06 (WH/OG) C426-3
      C135-42 RCA20 (BN) C426-1
      DTC C1175 
      C135-36 VCA04 (BU/OG) C440-3
      C135-37 RCA18 (BN/GN) C440-1
      Fig 9: Checking Wheel Speed Sensor Circuits For Open
      G06257040Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
      • Yes:  GO to C7.
      • No:  REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the ABS self-test.
  7. C7 CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS 
    • For DTC C1145  , measure the resistance between:
      • RF wheel speed sensor C160-1, circuit VCA05 (GY/VT), harness side and RF wheel speed sensor C160-2, circuit RCA19 (VT), harness side.
        Fig 10: Checking For Shorted Wheel Speed Sensor Circuits
        G06257041Courtesy of FORD MOTOR CO.
    • For DTC C1155  , measure the resistance between:
      • LF wheel speed sensor C150-1, circuit VCA03 (VT/WH), harness side and LF wheel speed sensor C150-2, circuit RCA17 (YE), harness side.
        Fig 11: Checking For Shorted Wheel Speed Sensor Circuits
        G06257041Courtesy of FORD MOTOR CO.
    • For DTC C1165  , measure the resistance between:
      • RR wheel speed sensor C426-3, circuit VCA06 (WH/OG), harness side and RR wheel speed sensor C426-1, circuit RCA20 (BN), harness side.
        Fig 12: Checking For Shorted Wheel Speed Sensor Circuits (LR)
        G06257044Courtesy of FORD MOTOR CO.
    • For DTC C1175  , measure the resistance between:
      • LR wheel speed sensor C440-3, circuit VCA04 (BU/OG), harness side and LR wheel speed sensor C440-1, circuit RCA18 (BN/GN), harness side.
        Fig 13: Checking For Shorted Wheel Speed Sensor Circuits (LR)
        G06257044Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
      • Yes:  GO to C8.
      • No:  REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  8. C8 CHECK THE ABS MODULE OUTPUT 
    • Connect: ABS Module C135.
    • Ignition ON.
    • For DTC C1145  , measure the voltage between:
      • RF wheel speed sensor C160-1, circuit VCA05 (GY/VT), harness side and RF wheel speed sensor C160-2, circuit RCA19 (VT), harness side.
        Fig 14: Checking For ABS Module Output
        G06257045Courtesy of FORD MOTOR CO.
    • For DTC C1155  , measure the voltage between:
      • LF wheel speed sensor C150-1, circuit VCA03 (VT/WH), harness side and LF wheel speed sensor C150-2, circuit RCA17 (YE), harness side.
        Fig 15: Checking For ABS Module Output (LF)
        G06257045Courtesy of FORD MOTOR CO.
    • For DTC C1165  , measure the voltage between:
      • RR wheel speed sensor C426-3, circuit VCA06 (WH/OG), harness side and RR wheel speed sensor C426-1, circuit RCA20 (BN), harness side.
        Fig 16: Checking For ABS Module Output (LR)
        G08018869Courtesy of FORD MOTOR CO.
    • For DTC C1175  , measure the voltage between:
      • LR wheel speed sensor C440-3, circuit VCA04 (BU/OG), harness side and LR wheel speed sensor C440-1, circuit RCA18 (BN/GN), harness side.
        Fig 17: Checking For ABS Module Output (LR)
        G08018869Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
  9. C9 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Check the connector for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: ABS Module C135.
    • Make sure the connector seats 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 ANTI-LOCK BRAKE SYSTEM (ABS) MODULE  . CLEAR the DTCs. REPEAT the self-test.
      • 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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