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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1991 (Anti-Lock Brake System - Vehicle Dynamic Systems) >> Diagnosis And Testing >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test F: DTCs C1279, C1280, C1281, C1282, C1516, C1517, C2769 and C2770 >> PINPOINT TEST F: DTCs C1279, C1280, C1281, C1282, C1516, C1517, C2769 and C2770

PINPOINT TEST F: DTCs C1279, C1280, C1281, C1282, C1516, C1517, C2769 and C2770

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
NOTE: The yaw rate sensor, roll-rate sensor, lateral accelerometer and longitudinal accelerometer are integral to the stability control sensor cluster.
NOTE: Make sure the vehicle is sitting on level ground, at a complete standstill and is not  on a hoist before calibrating the stability control sensor cluster or carrying out this pinpoint test. Any vehicle movement will result in false values for this test.
  1. F1 CARRY OUT THE CALIBRATION PROCEDURE 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: IVD Initialization Sequence.
    • Carry out the IVD Initialization sequence following the scan tool directions.
    • Test drive the vehicle.
    • Retrieve and record any ABS module DTCs.
    • Are any DTCs retrieved or does the IVD Initialization sequence indicate a fault? 
    • Yes:  GO to F2  .
    • No:  The system is operating correctly. The condition may have been caused by an incomplete or inaccurate stability control sensor cluster calibration.
  2. F2 CHECK THE SENSOR CLUSTER MOUNTING AND MOUNTING SURFACE 
    NOTE: The sensor cluster is located on the RH side of the vehicle, under the rear seat.
    • Ignition OFF.
    • Inspect the sensor cluster mounting and make sure that the nuts are fully seated and tightened correctly. Inspect the mounting surface for damage, corrosion or dirt.
    • Were the sensor cluster nuts tightened incorrectly or a significant amount of corrosion or dirt found or the mounting surface damaged? 
    • Yes:  CLEAN and TIGHTEN the nuts to correct specification. CLEAN or REPAIR the mounting surface as necessary. CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the scan tool directions for the IVD Initialization sequence. REPEAT the self-test.
    • No:  GO to F3  .
  3. F3 CHECK THE VOLTAGE TO THE SENSOR CLUSTER 
    • Disconnect: Stability Control Sensor Cluster C3037.
    • Ignition ON.
    • Measure the voltage between the sensor cluster C3037-2, circuit CBP35 (YE/GY), harness side and ground.
      Fig 1: Checking Circuit CBP35
      G06500814Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  GO to F4  .
    • No:  VERIFY SJB  fuse 35 (10A) is OK. If OK, REPAIR circuit CBP35 (YE/GY).

      If the fuse is not OK, REFER to the SYSTEM WIRING DIAGRAMS for Edge or SYSTEM WIRING DIAGRAMS for MKX to identify the possible cause of the circuit short.

      CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the scan tool directions for the IVD Initialization sequence. REPEAT the self-test.

  4. F4 CHECK CIRCUIT GD151 (BK/GN) FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between the sensor cluster C3037-5, circuit GD151 (BK/GN), harness side and ground.
      Fig 2: Checking Circuit GD151
      G06500815Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to F5  .
    • No:  REPAIR circuit GD151 (BK/GN). CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the scan tool directions for the IVD Initialization sequence. REPEAT the self-test.
  5. F5 CHECK CIRCUITS VCA23 (BU/WH) AND VCA24 (GN/OG) FOR AN OPEN 
    NOTE: The battery and battery tray need to be removed to access the ABS module connector.
    • Disconnect: ABS Module C135.
    • Measure the resistance between ABS module C135, harness side and stability control sensor cluster C3037, harness side as indicated in the following chart:
      RESISTANCE REFERENCE CHART

      ABS Module Circuit Stability Control Sensor Cluster
      C135-8 VCA23 (BU/WH) C3037-3
      C135-9 VCA24 (GN/OG) C3037-4
      Fig 3: Measuring Resistance Between ABS Module C135, Harness Side And Stability Control Sensor Cluster C3037
      G06500816Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes:  GO to F6  .
    • No:  REPAIR the affected circuit (s). CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the scan tool directions for the IVD Initialization sequence. REPEAT the self-test.
  6. F6 CHECK CIRCUITS VCA23 (BU/WH) AND VCA24 (GN/OG) FOR A SHORT TO GROUND 
    • Measure the resistance between ground and:
      • stability control sensor cluster C3037-3, circuit VCA23 (BU/WH), harness side.
      • stability control sensor cluster C3037-4, circuit VCA24 (GN/OG), harness side.
        Fig 4: Checking Circuits VCA23 (BU/WH) And VCA24 (GN/OG) For Short To Ground
        G06500817Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes:  GO to F7  .
    • No:  REPAIR the affected circuit (s). CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the scan tool directions for the IVD Initialization sequence. REPEAT the self-test.
  7. F7 CHECK CIRCUITS VCA23 (BU/WH) AND VCA24 (GN/OG) FOR A SHORT TOGETHER 
    • Measure the resistance between stability control sensor cluster C3037-3, circuit VCA23 (BU/WH), harness side and stability control sensor cluster C3037-4, circuit VCA24 (GN/OG), harness side.
      Fig 5: Checking Circuits VCA23 (BU/WH) And VCA24 (GN/OG) For Short Together
      G06500818Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  GO to F8  .
    • No:  REPAIR the affected circuit (s). CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the scan tool directions for the IVD Initialization sequence. REPEAT the self-test.
  8. F8 CHECK CIRCUITS VCA23 (BU/WH) AND VCA24 (GN/OG) FOR A SHORT TO VOLTAGE 
    NOTE: The battery must be connected to carry out this test.
    • Ignition ON.
    • Measure the voltage between ground and:
      • stability control sensor cluster C3037-3, circuit VCA23 (BU/WH), harness side.
      • stability control sensor cluster C3037-4, circuit VCA24 (GN/OG), harness side.
        Fig 6: Checking Circuits VCA23 (BU/WH) And VCA24 (GN/OG) For Short To Voltage
        G06500819Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR the affected circuit (s). CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the scan tool directions for the IVD Initialization sequence. REPEAT the self-test.
    • No:  INSTALL a new sensor cluster. REFER to STABILITY CONTROL SENSOR CLUSTER . CLEAR the DTCs. CALIBRATE the ABS module. FOLLOW the scan tool directions for the IVD Initialization sequence. REPEAT the self-test.
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