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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (Anti-Lock Brake System And Stability Control -- F250-F550 Super Duty) >> Diagnosis And Testing >> Anti-Lock Control - Four-Channel >> Pinpoint Tests >> Pinpoint Test AO: DTCs C0040:72, C0040:73 >> PINPOINT TEST AO: DTCs C0040:72, C0040:73

PINPOINT TEST AO: DTCs C0040:72, C0040:73

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. 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. AO1 VERIFY CORRECT STOPLAMP SWITCH INSTALLATION 
    • Check the stoplamp switch for correct installation.
    • Is the stoplamp switch correctly installed? 
      1. Yes  : GO to AO2.
      2. No  : REMOVE the stoplamp switch and INSTALL it correctly. REFER to EXTERIOR LIGHTING . CLEAR the DTCs. TEST DRIVE the vehicle above 40 km/h (25 mph) and CARRY OUT 4 complete stops. REPEAT the self-test.
  2. AO2 CHECK THE STOPLAMPS FOR CORRECT OPERATION 
    • Check the stoplamps for correct operation by pressing and releasing the brake pedal and observing the stoplamps.
    • Do the stoplamps operate correctly? 
      1. Yes  : GO to AO3.
      2. No  : REFER to EXTERIOR LIGHTING for further diagnosis of the stoplamps.
  3. AO3 CHECK THE ABS MODULE DTCs 
    • Review the ABS module DTCs retrieved during Inspection and Verification.
    • Is U0100:00 present? 
      1. Yes  : GO to Pinpoint Test X  .
      2. No  : GO to AO4.
  4. AO4 CHECK THE ABS MODULE BRAKE ON/OFF (BOO_ABS) PID 
    • Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
    • Monitor the BOO_ABS PID while pressing and releasing the brake pedal.
    • Does the PID display match the brake pedal position? 
      1. Yes  : The system is operating correctly at this time. CLEAR the DTCs. REPEAT the self-test.
      2. No  : GO to AO5.
  5. AO5 CHECK THE PCM BRAKE ON/OFF (BOO1) PID 
    • Enter the following diagnostic mode on the scan tool: DataLogger - PCM.
    • Monitor the BOO1 PID while pressing and releasing the brake pedal.
    • Does the PID display match the brake pedal position? 
      1. Yes  : The system is operating correctly at this time. CLEAR the DTCs. REPEAT the self-test.
      2. No  : REFER to EXTERIOR LIGHTING to diagnose the stoplamp switch.
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