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Pinpoint Test E: PCA Solenoid

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 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: Refer to the Transmission Vehicle Harness Connector illustration preceding these pinpoint tests.
NOTE: Refer to the Transmission Internal Harness Connector illustration preceding these pinpoint tests.
  1. E1 CHECK TRANSMISSION VEHICLE HARNESS FOR CONTINUITY 
    • Key in OFF position.
    • 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.
      • Fig 1: Checking Transmission Vehicle Harness For Continuity
      GF0044753Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T and C1385 using the following chart.
      Transmission Connector Circuit PCM
      C1385-10 CET50 (WH/OG) C175T-23
      C1385-7 CET25 (BU/GN) C175T-49
    • Is each resistance less than 5.0 ohms? 
    1. YES  : Go to  E2.
    2. NO  : REPAIR the open circuit. CLEAR the DTCs. TEST the system for normal operation.
  2. E2 CHECK TRANSMISSION VEHICLE HARNESS FOR SHORT TO GROUND 
      Fig 2: Checking Transmission Vehicle Harness For Short To Ground
      GF0044754Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T, harness side and ground using the following chart.
      PCM Circuit Ground
      C175T-23 CET50 (WH/OG) Ground
      C175T-49 CET25 (BU/GN) Ground
    • Is each resistance greater than 10,000 ohms? 
    1. YES  : Go to  E3.
    2. NO  : REPAIR short 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)
      • Fig 3: Checking Transmission Internal Harness For An Open
      GF0044755Courtesy of FORD MOTOR CO.
    • Measure the resistance between transmission internal harness C1385 and the PCA solenoid using the following chart.
      Transmission Connector Circuit PCA Solenoid
      C1385-10 Signal 2
      C1385-7 Power 1
    • Are the resistances less than 0.5 ohm? 
    1. YES  : Go to  E4.
    2. 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 
      Fig 4: Checking Transmission Internal Harness For A Short To Ground
      GF0044756Courtesy of FORD MOTOR CO.
    • Measure the resistance between transmission internal harness C1385, harness side and ground using the following chart.
      Transmission Connector Circuit Ground
      C1385-10 Signal Ground
      C1385-7 Power Ground
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  E5.
    2. NO  : INSTALL a new transmission harness. CLEAR the DTCs. TEST the system for normal operation.
  5. E5 CHECK THE PCA RESISTANCE 
      Fig 5: Checking PCA Resistance
      GF0044757Courtesy of FORD MOTOR CO.
    • Measure the resistance between pins 1 and 2 at the PCA.
    • Is the resistance between   4.88-5.48 ohms   ? 
    1. YES  : INSTALL a new PCM.
    2. NO  : INSTALL a new PCA. CLEAR the DTCs. TEST the system for normal operation.
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