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Pinpoint Test F: Control Solenoids

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: Refer to the Transmission Vehicle Harness Connector illustration in Transmission Connector Layouts .
NOTE: Refer to the Transmission Internal Harness Connector illustration in Transmission Connector Layouts .
NOTE: Read and record all DTCs. All Transmission Range (TR) sensor and Vehicle Speed Sensor (VSS) DTCs must be repaired before entering output state control.
NOTE: Use the PID Chart for available diagnostic PIDs. Refer to Diagnostic Parameters Identification (PID) Chart .
  1. F1 ELECTRONIC DIAGNOSTICS 
    • Select PARK.
    • Key in OFF position.
    • 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 diagnostic tool.
    • Engine idling.
    • Enter the following diagnostic mode on the diagnostic tool: PID List
    • Monitor the appropriate Shift Solenoid Pressure Control PID being tested or TCC PID, refer to the PID Chart in Diagnostic Parameters Identification (PID) Chart .
    • Can the PIDs be monitored or solenoids be commanded? 
    1. YES  : Go to  F2.
    2. NO  : REPEAT procedure to enter PID list. If the vehicle did not enter PID list, REFER to the INTRODUCTION - GASOLINE ENGINES article or INTRODUCTION - 6.4L DIESEL ENGINES article for diagnosis of the PCM.
  2. F2 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.
    • Press "SEND".
    • Select another value: 0 - 1.0 amp.
    • Press "SEND".
    • Cancel and return to normal operation.
    • Do the monitored current readings change and match the command? 
    1. YES  : CLEAR the DTCs. ROAD test the vehicle. If symptoms persist, go to Diagnosis By Symptom .
    2. NO  : Go to  F3.
  3. F3 CHECK FOR BATTERY VOLTAGE 
    • Disconnect: Transmission vehicle harness C1385
    • Inspect the connectors for damaged pins.
    • Key in ON position.
      • Fig 1: Checking For Battery Voltage
      GF0044736Courtesy of FORD MOTOR CO.
    • Measure the voltage between transmission vehicle harness C1385, circuit 391 (RD/YE), harness side and ground using the following chart.
      Transmission Connector Circuit Ground
      C1385-7 CET25 (BU/GN) Ground
      C1385-20 CET25 (BU/GN) Ground
      C1385-24 CET25 (BU/GN) Ground
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  F4.
    2. NO  : REPAIR the circuit that has less than 10 volts. CLEAR the DTCs. TEST the system for normal operation.
  4. F4 CHECK SIGNAL CIRCUITS FOR AN OPEN 
    • Disconnect: TCM C1750
    • Check to make sure the transmission vehicle harness C1385 and C1750 terminals are fully engaged in the connector and are in good condition before proceeding.
    • Measure the resistance between the transmission vehicle harness C1385 signal pin and the TCM C1750, harness side using the following chart.
      Transmission Connector Circuit TCM
      C1385-12 CET05 (BU/GN) C1750-8
      C1385-3 CET06 (GN/BN) C1750-7
      C1385-5 CET07 (GY/OG) C1750-6
      C1385-4 CET08 (BN/WH) C1750-5
      C1385-1 CET09 (YE/VT) C1750-4
      C1385-8 CET49 (BN) C1750-3
      C1385-10 CET50 (WH/OG) C1750-22
    • Is the resistance greater than 0.5 ohm? 
    1. YES  : REPAIR open in the circuit that is faulty. CLEAR the DTCs. TEST the system for normal operation.
    2. NO  : Go to  F5.
  5. F5 CHECK HARNESS FOR SHORT TO GROUND 
    • Measure the resistance between transmission vehicle harness C1385, harness side and ground using the following chart.
      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 the resistance greater than 10,000 ohms? 
    1. YES  : Go to  F6.
    2. NO  : REPAIR the circuit for a short to ground. CLEAR the DTCs. TEST the system for normal operation.
  6. F6 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.
      Transmission Connector Component Pin Number
      C1385-8 TCC 2
      C1385-10 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
      • Fig 2: Checking Internal Harness For An Open
      GF0044737Courtesy of FORD MOTOR CO.
    • Measure the resistance between transmission internal harness C1385 and the associated solenoid connector using the following chart.
      Transmission Connector Component Pin Number
      C1385-7 TCC/ PCA 1
      C1385-20 SSPCA/ SSPCB 1
      C1385-24 SSPCC/ SSPCD/ SSPCE 1
    • Are the resistances less than 0.5 ohm? 
    1. YES  : Go to  F7.
    2. NO  : INSTALL a new harness. CLEAR the DTCs. TEST the system for normal operation.
  7. F7 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.
      Transmission Connector Component Ground
      C1385-20 SSPCA andSSPCB 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 the resistance greater than 10,000 ohms? 
    1. YES  : Go to  F8.
    2. NO  : INSTALL a new harness. CLEAR the DTCs. TEST the system for normal operation.
  8. F8 CHECK THE SOLENOID RESISTANCE AT THE SOLENOID 
    • Fig 3: Checking Solenoid Resistance At Solenoid
      GF0044738Courtesy of FORD MOTOR CO.

      Measure the resistance between pins 1 and 2 at each solenoid.
    • Is the resistance between   4.1-4.7 ohms   ? 
    1. 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 TCM.
    2. NO  : INSTALL a new solenoid if not within specification. CLEAR the DTCs. TEST the system for normal operation.
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