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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2100 (Anti-Lock Brake System - Vehicle Dynamic Systems) >> Diagnosis And Testing >> Anti-Lock Control - Non-Hybrid >> Pinpoint Tests >> Pinpoint Test I: DTCs C1288 and C1440 >> PINPOINT TEST I: DTCs C1288 AND C1440

PINPOINT TEST I: DTCs C1288 AND C1440

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. 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. I1 MONITOR THE PCM BRAKE ON/OFF (BOO) PID 
    • Connect the scan tool.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - PCM.
    • Press and release the brake pedal while monitoring the BOO PID.
    • Does the PID switch to ON with the brake pedal pressed and then to OFF with the brake pedal released? 
  2. I2 REVIEW THE ABS MODULE DTCs 
    • Connect the scan tool.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Clear All ABS Module DTCs.
    • Ignition OFF.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Retrieve and record any ABS module DTCs.
    • Is DTC C1288 or C1440 present? 
    • Yes  : GO to  I4.
    • No  : GO to I3.
  3. I3 CHECK FOR RETURNING DTCs 
    • Enter the following diagnostic mode on the scan tool: Clear All ABS Module DTCs.
    • Drive the vehicle in a straight line at a speed greater than 40 km/h (25 mph) for at least 60 seconds.
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Retrieve and record any ABS module DTCs.
    • Is DTC C1288 or C1440 present? 
    • Yes  : For DTC C1288, GO to  I5.

      For DTC C1440, GO to I4.

    • No  : The concern is not present at this time. For all other DTCs, REFER to the ABS MODULE DTC TABLE .
  4. I4 CARRY OUT THE ABS SERVICE BLEED 
    • Carry out the Brake System Service Bleed, refer to BRAKE SYSTEM - GENERAL INFORMATION article. Clear the DTCs. Repeat the self-test.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Clear All ABS Module DTCs.
    • Drive the vehicle in a straight line at a speed greater than 40 km/h (25 mph) for at least 60 seconds.
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Is DTC C1288 or C1440 present? 
    • Yes  : GO to  I6.
    • No  : The system is operating correctly at this time. The concern may have been caused by air trapped in the hydraulic brake system.

      CLEAR the DTCs. REPEAT the self-test.

  5. I5 CHECK THE ABS TO HCU CONNECTION 
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Remove the ABS module. Refer to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE  in this service information.
    • Inspect the ABS module-to-HCU mating surfaces for damage or contamination.
      • Inspect the 4-pin pressure sensor connector in the ABS module and on the HCU side for damage, corrosion or contamination.
    • Are the ABS-to-HCU mating surfaces undamaged and free of contamination or corrosion? 
  6. I6 CHECK THE ABS MAIN BRAKE PRESSURE (MPRETDR) PID 
    • If not already done, separate the ABS module from the HCU. Refer to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE  in this service information.
    • With the ABS module separated from the HCU, connect ABS module C135.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
    • Monitor the MPRETDR PID.
    • Is the PID value between 21.13K and 22.59K? 
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