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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1186 (Anti-Lock Brake System Control) >> Diagnosis And Testing >> Principles of Operation >> Pinpoint Test H: DTC C1279, C1280, C1281, C1282, C1516, C1517, C2769, C2770, - Sensor Cluster Fault >> Pinpoint Test H: DTC C1279, C1280, C1281, C1282. C1516, C1517, C2769, C2770 - Sensor Cluster Fault

Pinpoint Test H: DTC C1279, C1280, C1281, C1282. C1516, C1517, C2769, C2770 - Sensor Cluster Fault

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.
NOTE: The yaw rate sensor, roll rate sensor, lateral accelerometer, and longitudinal accelerometer are integral to the sensor cluster.
NOTE: The vehicle must be on level ground, not on a hoist and at a complete standstill. Any vehicle movement results in false values for this test.
  1. H1 CARRY OUT THE RECALIBRATION PROCEDURE 
    • Connect the diagnostic tool.
    • Key in ON position.
    • Using the diagnostic tool, clear the DTCs, carry out the self-test and retrieve any DTCs.
    • Are any DTCs retrieved? 
    • Yes  : GO to H2.
    • No  : The anti-lock brake system (ABS) system is operating correctly.
  2. H2 CHECK THE VOLTAGE FROM THE ABS MODULE 
    • Disconnect: Sensor Cluster Module.
    • Key in ON position.
    • Measure the voltage between the sensor cluster C 3180-3, circuit 1574 (DB), harness side and the sensor cluster C3180-5, circuit 1575 (BK/WH), harness side.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to H3.
    • No  : GO to  H7.
  3. H3 CHECK THE ABS MODULE YAW RATE PID 
    • Connect: Sensor Cluster Module.
    • Enter the following diagnostic mode on the diagnostic tool: ABS Module PID.
    • Monitor the ABS module yaw rate PID.
    • Is the ABS module yaw rate PID value between -0.05 and 0.05? 
    • Yes  : GO to H4.
    • No  : CHECK the mounting of the sensor cluster. If OK, INSTALL a new sensor cluster. REFER to ACCELEROMETER . CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the diagnostic tool directions for the calibration procedure. REPEAT the self-test.
  4. H4 CHECK THE ABS MODULE LATERAL ACCELERATION PID 
    • Enter the following diagnostic mode on the diagnostic tool: ABS Module PID.
      • NOTE: The vehicle must be on level ground and at a complete standstill. Any vehicle movement results in false values for this test.
    • Monitor the ABS module lateral acceleration PID.
    • Is the ABS module lateral acceleration PID value between -0.007 and 0.007? 
    • Yes  : GO to H5.
    • No  : CHECK the mounting of the sensor cluster. If OK, INSTALL a new sensor cluster. REFER to ACCELEROMETER . CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the diagnostic tool directions for the calibration procedure. REPEAT the self-test.
  5. H5 CHECK THE ABS MODULE LONGITUDINAL ACCELERATION PID 
    • Enter the following diagnostic mode on the diagnostic tool: ABS Module PID.
    • Monitor the ABS module longitudinal acceleration PID.
    • Is the ABS module longitudinal acceleration PID value between -0.004 and 0.004? 
    • Yes  : GO to H6.
    • No  : CHECK the mounting of the sensor cluster. If OK, INSTALL a new sensor cluster. REFER to ACCELEROMETER . CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the diagnostic tool directions for the calibration procedure. REPEAT the self-test.
  6. H6 CHECK THE ABS MODULE ROLL RATE PID 
    • Enter the following diagnostic mode on the diagnostic tool: ABS Module PID.
    • Monitor the ABS module roll rate PID.
    • Is the ABS module roll rate PID value between -0.05 and 0.05? 
    • Yes  : GO to H7.
    • No  : CHECK the mounting of the sensor cluster. If OK, INSTALL a new sensor cluster. REFER to ACCELEROMETER . CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the diagnostic tool directions for the calibration procedure. REPEAT the self-test.
  7. H7 CHECK THE SENSOR CLUSTER CIRCUITRY FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Sensor Cluster C3180.
    • Disconnect: ABS Module C155.
    • Measure the resistance between the ABS module connector, harness side and the sensor cluster connector, harness side as follows:
      ABS MODULE AND SENSOR CLUSTER CONNECTORS AND CIRCUITS

      ABS Module Connector-Pin Sensor Cluster Connector-Pin Circuit
      C155-7 C3180-3 1576 (TN/BK)/1574 (DB)
      C155-5 C3180-5 1577 (RD/LB)/1575 (BK/WH)
      C155-25 C3180-1 1879 (PK/BK)/3125 (RD/YE)
      C155-29 C3180-2 1878 (WH/BK)/3126 (TN/YE)
    • Are the resistances less than 5 ohms? 
    • Yes  : GO to H8.
    • No  : REPAIR the circuit(s) in question. CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the diagnostic tool directions for the calibration procedure. REPEAT the self-test.
  8. H8 CHECK THE SENSOR CLUSTER CIRCUITRY FOR A SHORT TO VOLTAGE 
    • Key in ON position.
    • Measure the voltage between the sensor cluster connector, harness side and ground as follows:
      SENSOR CLUSTER CONNECTOR AND CIRCUITS

      Sensor Cluster Connector-Pin Circuit
      C3180-3 1574 (DB)
      C3180-5 1575 (BK/WH)
      C3180-1 3125 (RD/YE)
      C3180-2 3126 (TN/YE)
    • Is any voltage present? 
    • Yes  : REPAIR the circuit(s) in question. CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the diagnostic tool directions for the calibration procedure. REPEAT the self-test.
    • No  : GO to H9.
  9. H9 CHECK THE SENSOR CLUSTER CIRCUITRY FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Measure the resistance between the sensor cluster connector, harness side and ground as follows:
      SENSOR CLUSTER CONNECTOR AND CIRCUITS

      Sensor Cluster Connector-Pin Circuit
      C3180-3 1574 (DB)
      C3180-5 1575 (BK/WH)
      C3180-1 3125 (RD/YE)
      C3180-2 3126 (TN/YE)
    • Are the resistances greater than 10,000 ohms? 
    • Yes  : GO to H10.
    • No  : REPAIR the circuit(s) in question. CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the diagnostic tool directions for the calibration procedure. REPEAT the self-test.
  10. H10 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect all the ABS connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all the 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.
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