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Pinpoint Test B: TCS Does Not Operate Correctly (Vehicles Equipped With A 2.5L Engine Only)

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.
  1. B1 CHECK THE IC 
  2. B2 CHECK FUSE 47 (10A) 
    • Check fuse: Battery Junction Box (BJB) fuse 47 (10A).
    • Is the resistance less than 5 ohms? 
      1. Yes  : GO to B3  .
      2. No  : GO to  B6.
  3. B3 CHECK THE POWER CIRCUIT FOR VOLTAGE 
    • Disconnect: Selector Lever C3233.
    • Ignition ON.
    • Measure the voltage between selector lever harness C3233-7, circuit CBK03 (GY), vehicle harness side and ground.
      Fig 1: Measuring Voltage Between Selector Lever Harness C3233-7, Circuit CBK03 (GY), Vehicle Harness Side And Ground
      G07786284Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      1. Yes  : GO to  B5.
      2. No  : GO to B4  .
  4. B4 CHECK THE POWER CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: BJB fuse 47 (10A).
    • Measure the resistance between the output side of BJB fuse 47 (10A) and selector lever harness C3233-7 circuit CBK03 (GY), vehicle harness side.
      Fig 2: Measuring Resistance Between Output Side Of BJB Fuse 47 (10A) And Selector Lever Harness C3233-7 Circuit CBK03 (Gy), Vehicle Harness Side
      G06275622Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      1. Yes  : Install a new BJB.
      2. No  : REPAIR circuit CBK03 (GY) for an open. TEST the system for normal operation.
  5. B5 CHECK THE TCS 
    • Measure the resistance between selector lever harness C3533 pins 6 and 7, component side, while cycling the TCS.
      Fig 3: Measuring Resistance Between Selector Lever Harness C3533 Pins 6 And 7, Component Side
      G06275623Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms when pressed and greater than 10,000 ohms when released? 
      1. Yes  : GO to  B7.
      2. No  : INSPECT the selector lever wiring harness for damage. REPAIR the wiring harness as required. If the selector lever wiring harness is not damaged, INSTALL a new selector lever knob. REFER to SELECTOR LEVER KNOB  in this service information. TEST the system for normal operation.
  6. B6 CHECK THE SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: PCM C175T.
    • Measure the resistance between selector lever harness C3233-6, circuit CET34 (BN/GN) and ground.
      Fig 4: Measuring Resistance Between Selector Lever Harness C3233-6, Circuit CET34 (BN/GN) And Ground
      G07786287Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000? 
      1. Yes  : REPAIR circuit CBK03 (GY) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.
      2. No  : REPAIR circuit CET34 (BN/GN) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.
  7. B7 CHECK THE SIGNAL CIRCUIT FOR AN OPEN 
    • Disconnect: PCM C175T.
    • Measure the resistance between selector lever harness C3233-6, circuit CET34 (BN/GN) and PCM C175T-31, circuit CET34 (BN/GN).
      Fig 5: Measuring Resistance Between Selector Lever Harness C3233-6, Circuit CET34 (BN/GN) And PCM C175T-31, Circuit CET34 (BN/GN)
      G06275625Courtesy of FORD MOTOR CO.
    • Is the resistance less then 5 ohms? 
      1. Yes  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - 2.5L -- FUSION & MILAN (EXCEPT HYBRID) article.
      2. No  : REPAIR circuit CET34 (BN/GN) for an open. TEST the system for normal operation.
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