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Pinpoint Test A: Control Solenoids

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: 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.
NOTE: Read and record all DTCs.
NOTE: Use the PID Chart for available diagnostic PIDs. Refer to DIAGNOSTIC PARAMETERS IDENTIFICATION (PID) CHART .
  1. A1 ELECTRONIC DIAGNOSTICS 
    • Select PARK.
    • Ignition OFF.
    • Check to make sure the transmission vehicle harness connector is fully seated, terminals are fully engaged in the connector and are in good condition before proceeding.
    • Connect the scan tool.
    • Ignition ON.
    • Access the transmission PIDs.
    • Is the scan tool able to access the transmission PIDs? 
  2. A2 SOLENOID COMMAND TEST 
    • Monitor the appropriate commanded current PIDs for the solenoid being tested.
    • Select the appropriate solenoid that is to be tested, SSx_AMP or TCC_AMP.
    • Select value: 0, 0.25, 0.50, 0.75 or 1.0 amp.
    • Do the monitored current readings change and match the command? 
    • Yes:  CLEAR the DTCs. ROAD test. If symptom returns, GO to DIAGNOSIS BY SYMPTOM .
    • No:  GO to A3  .
  3. A3 CHECK FOR BATTERY VOLTAGE 
    • Disconnect: Transmission Vehicle Harness C1385.
    • Inspect the connector for damage, terminals are fully engaged in the connector and are in good condition before proceeding.
    • Ignition ON.
    • Measure the voltage between transmission vehicle harness C1385, circuit CET25 (BU/GN), harness side and ground using the following chart.
      VOLTAGE REFERENCE

      Transmission Connector Circuit Ground
      C1385-7 CET25 (BU/GN) Ground
      C1385-20 CET25 (BU/GN) Ground
      C1385-24 CET25 (BU/GN) Ground
      Fig 1: Measuring Voltage Between Transmission Vehicle Harness C1385 And Ground
      G06775637Courtesy of FORD MOTOR CO.
    • Is voltage greater than 10 volts? 
    • Yes:  GO to A4  .
    • No:  REPAIR the circuit that has less than 10 volts. CLEAR the DTCs. TEST the system for normal operation.
  4. A4 CHECK SIGNAL CIRCUITS FOR AN OPEN 
    • Disconnect: PCM C175T.
    • Check to make sure the transmission vehicle harness C1385 and C175T terminals are fully engaged in the connector and are in good condition before proceeding.
    • Measure the resistance between the transmission vehicle harness C1385 signal terminal and the PCM C175T, harness side using the following chart.
      RESISTANCE REFERENCE

      Transmission Connector Circuit PCM
      C1385-12 CET05 (BU/GN) C175T-1
      C1385-3 CET06 (GN/BN) C175T-2
      C1385-5 CET07 (GY/OG) C175T-10
      C1385-4 CET08 (BN/WH) C175T-11
      C1385-1 CET09 (YE/VT) C175T-12
      C1385-8 CET49 (BN) C175T-13
      C1385-10 CET50 (WH/OG) C175T-23
    • Is resistance less than 5 ohms? 
    • Yes:  GO to A5  .
    • No:  REPAIR open in the circuit that is faulty. CLEAR the DTCs. TEST the system for normal operation.
  5. A5 CHECK HARNESS FOR SHORT TO GROUND 
    • Measure the resistance between transmission vehicle harness C1385, harness side and ground using the following chart.
      RESISTANCE REFERENCE

      Transmission Connector Circuit Ground
      C1385-12 CET05 (BU/GN) Ground
      C1385-3 CET06 (GN/BN) Ground
      C1385-5 CET07 (GY/OG) Ground
      C1385-4 CET08 (BN/WH) Ground
      C1385-1 CET09 (YE/VT) Ground
      C1385-8 CET49 (BN) Ground
      C1385-10 CET50 (WH/OG) Ground
    • Is resistance greater than 10,000 ohms? 
    • Yes:  GO to A6  .
    • No:  REPAIR the circuit for a short to ground. CLEAR the DTCs. TEST the system for normal operation.
  6. A6 CHECK THE INTERNAL HARNESS FOR AN OPEN 
    • Drain the transmission fluid.
    • Remove the transmission fluid pan.
    • Disconnect: Affected Solenoid.
    • Measure the resistance between transmission internal harness C1385 and the associated solenoid connector using the following chart.
      RESISTANCE REFERENCE

      Transmission Connector Component Terminal Number
      C1385-8 TCC  2
      C1385-10 Pressure Control Solenoid A (PCA) 2
      C1385-12 Shift Solenoid Pressure Control A (SSPCA) 2
      C1385-3 Shift Solenoid Pressure Control B (SSPCB) 2
      C1385-5 Shift Solenoid Pressure Control C (SSPCC) 2
      C1385-4 Shift Solenoid Pressure Control D (SSPCD) 2
      C1385-1 Shift Solenoid Pressure Control E (SSPCE) 2
    • Measure the resistance between transmission internal harness C1385 and the associated solenoid connector using the following chart.
      RESISTANCE REFERENCE

      Transmission Connector Component Terminal Number
      C1385-7 TCC  /PCA  1
      C1385-20 SSPCA  /SSPCB  1
      C1385-24 SSPCC  /SSPCD  /SSPCE  1
      Fig 2: Measuring Resistance Between Transmission Internal Harness C1385 And Associated Solenoid Connector
      G06775638Courtesy of FORD MOTOR CO.
    • Is resistance less than 5 ohms? 
    • Yes:  GO to A7  .
    • No:  INSTALL a new harness. CLEAR the DTCs. TEST the system for normal operation.
  7. A7 CHECK THE INTERNAL HARNESS FOR A SHORT TO GROUND 
    • Measure the resistance between transmission vehicle harness C1385, component side and ground using the following chart.
      RESISTANCE REFERENCE

      Transmission Connector Component Ground
      C1385-20 SSPCA  and SSPCB  Ground
      C1385-7 TCC  /PCA  Ground
      C1385-8 TCC  Ground
      C1385-10 PCA  Ground
      C1385-12 SSPCA  Ground
      C1385-3 SSPCB  Ground
      C1385-5 SSPCC  Ground
      C1385-4 SSPCD  Ground
      C1385-1 SSPCE  Ground
      C1385-24 SSPCC  /SSPCD  /SSPCE  Ground
    • Is resistance greater than 10,000 ohms? 
    • Yes:  GO to A8  .
    • No:  INSTALL a new harness. CLEAR the DTCs. TEST the system for normal operation.
  8. A8 CHECK THE SOLENOID RESISTANCE AT THE SOLENOID 
    • Measure the resistance between terminals 1 and 2 at each solenoid.
      Fig 3: Measuring Resistance Between Terminals 1 And 2 At Solenoid
      G06140550Courtesy of FORD MOTOR CO.
    • Is resistance between   4.1-4.7 ohms   ? 
    • Yes:  REFER to DIAGNOSIS BY SYMPTOM . for diagnosis of pressure concerns. CLEAR the DTCs. Test the system for normal operation. If the condition returns, INSTALL a new PCM.
    • No:  INSTALL a new solenoid if not within specification. CLEAR the DTCs. TEST the system for normal operation.
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