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Pinpoint Test E: PCA (Line Pressure) Solenoid

WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: This test should only be used if DTCs P0748, P0960, P0962 or P0963 are present.
NOTE: Read and record all DTCs.
NOTE: Refer to the Transmission Vehicle Harness Connector illustration within the TRANSMISSION CONNECTOR LAYOUTS  procedure.
NOTE: Refer to the Internal Harness Connector illustration within the TRANSMISSION CONNECTOR LAYOUTS  procedure.
  1. E1 CHECK TRANSMISSION VEHICLE HARNESS FOR CONTINUITY 
    • Ignition OFF.
    • Disconnect: PCM C175T.
    • Disconnect: Transmission Vehicle Harness C1385.
    • Check to make sure the transmission vehicle harness C1385 is fully seated, terminals are fully engaged in the connector and are in good condition before proceeding.
    • Measure the resistance between PCM C175T and C1385 using the following chart.
      RESISTANCE REFERENCE

      Transmission Connector Circuit PCM
      C1385-10 CET50 (WH/OG) C175T-23
      C1385-7 CET25 (BU/GN) C175T-49
      Fig 1: Measuring Resistance Between PCM C175T And C1385
      G06775651Courtesy of FORD MOTOR CO.
    • Is resistance less than 5 ohms? 
    • Yes:  GO to E2  .
    • No:  REPAIR the open circuit. CLEAR the DTCs. TEST the system for normal operation.
  2. E2 CHECK TRANSMISSION VEHICLE HARNESS FOR SHORT TO GROUND 
    • Measure the resistance between PCM C175T, harness side and ground using the following chart.
      RESISTANCE REFERENCE

      PCM Circuit Ground
      C175T-23 CET50 (WH/OG) Ground
      C175T-49 CET25 (BU/GN) Ground
      Fig 2: Measuring Resistance Between PCM C175T, Harness Side And Ground
      G06775652Courtesy of FORD MOTOR CO.
    • Is resistance greater than 10,000 ohms? 
    • Yes:  GO to E3  .
    • No:  REPAIR the shorted circuit. CLEAR the DTCs. TEST the system for normal operation.
  3. E3 CHECK THE TRANSMISSION INTERNAL HARNESS FOR AN OPEN 
    • Drain the transmission fluid.
    • Remove the transmission fluid pan.
    • Disconnect: Pressure Control Solenoid A (PCA).
    • Measure the resistance between transmission internal harness C1385 and the PCA  solenoid using the following chart.
      RESISTANCE REFERENCE

      Transmission Connector Circuit PCA  Solenoid
      C1385-10 Signal 2
      C1385-7 Power 1
      Fig 3: Measuring Resistance Between Transmission Internal Harness C1385 And PCA Solenoid
      G06775653Courtesy of FORD MOTOR CO.
    • Is resistance less than 5 ohms? 
    • Yes:  GO to E4  .
    • No:  INSTALL a new transmission harness. CLEAR the DTCs. TEST the system for normal operation.
  4. E4 CHECK THE TRANSMISSION INTERNAL HARNESS FOR A SHORT TO GROUND 
    • Measure the resistance between transmission internal harness C1385, component side and ground using the following chart.
      RESISTANCE REFERENCE

      Transmission Connector Circuit Ground
      C1385-10 Signal Ground
      C1385-7 Ignition voltage Ground
      Fig 4: Measuring Resistance Between Transmission Internal Harness C1385, Component Side And Ground
      G06775654Courtesy of FORD MOTOR CO.
    • Is resistance greater than 10,000 ohms? 
    • Yes:  GO to E5  .
    • No:  INSTALL a new transmission harness. CLEAR the DTCs. TEST the system for normal operation.
  5. E5 CHECK THE PCA RESISTANCE 
    • Measure the resistance between terminals 1 and 2 at the PCA  .
      Fig 5: Measuring Resistance Between Terminals 1 And 2 At PCA
      G06599422Courtesy of FORD MOTOR CO.
    • Is resistance between   4.88-5.48 ohms   ? 
    • Yes:  INSTALL a new PCM.
    • No:  INSTALL a new PCA  . CLEAR the DTCs. TEST the system for normal operation.
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