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Pinpoint Test A: Transaxle Control Solenoids

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to the Transaxle Vehicle Harness Connector illustration within the TRANSAXLE CONNECTOR LAYOUTS  procedure.
  1. A1 ELECTRONIC DIAGNOSTICS 
    • Check to make sure the transaxle harness connector is fully seated, terminals are engaged in connector and in good condition before proceeding.
    • Connect the scan tool.
    • Carry out the Key ON Engine OFF (KOEO) until continuous DTCs have been displayed.
    • Can the scan tool establish communication with the PCM? 
    1. Yes:  GO to A2  .
    2. No:  REFER to the INTRODUCTION - GASOLINE MODELS .
  2. A2 CHECK THE SOLENOID CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Transaxle Vehicle Harness C168a.
    • Use a mirror to inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Disconnect: PCM Transaxle Harness C175T.
    • Use a mirror to inspect both ends of the connector for damage or pushed out pins, corrosion, loose wires and missing or damaged seals.
    • Measure the resistance of the suspect solenoid circuit between the PCM transaxle harness C175T and transaxle vehicle harness C168a using the following chart.
      TRANSAXLE VEHICLE HARNESS REFERENCE

      Shift Solenoid Transaxle Vehicle Harness PCM
      Shift Solenoid A (SSA) CET05 (BU/GN) C168a-8 C175T-45
      Shift Solenoid B (SSB) CET06 (GN/BN) C168a-9 C175T-43
      Shift Solenoid C (SSC) CET07 (GY/OG) C168a-4 C175T-44
      Shift Solenoid D (SSD) CET08 (BN/WH) C168a-10 C175T-10
      Shift Solenoid E (SSE) CET18 (GY/YE) C168a-7 C175T-11
      Line Pressure Control (LPC) CET09 (YE/VT) C168a-3 C175T-34
      Torque Converter Clutch (TCC) CET10 (BU/GY) C168a-6 C175T-46
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to A3  .
    2. No:  REPAIR the circuit(s) for an open. RECONNECT all components. TEST the system for normal operation.
  3. A3 CHECK THE SOLENOID CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between the transaxle vehicle harness C168a, harness side and ground using the following chart.
      TRANSAXLE VEHICLE HARNESS REFERENCE

      Shift Solenoid Transaxle Vehicle Harness Ground
      SSA  CET05 (BU/GN) C168a-8 Ground
      SSB  CET06 (GN/BN) C168a-9 Ground
      SSC  CET07 (GY/OG) C168a-4 Ground
      SSD  CET08 (BN/WH) C168a-10 Ground
      SSE  CET18 (GY/YE) C168a-7 Ground
      LPC  CET09 (YE/VT) C168a-3 Ground
      TCC  CET10 (BU/GY) C168a-6 Ground
    • Is the resistance greater than 10, 000 ohms? 
    1. Yes:  GO to A4  .
    2. No:  REPAIR the circuit(s) for a short to ground. RECONNECT all components. TEST the system for normal operation.
  4. A4 CHECK THE SOLENOID CIRCUIT FOR A SHORT TO POWER 
    • Measure the voltage between the transaxle vehicle harness electrical C168a, harness side and ground using the following chart.
      TRANSAXLE VEHICLE HARNESS REFERENCE

      Shift Solenoid Transaxle Vehicle Harness Ground
      SSA  CET05 (BU/GN) C168a-8 Ground
      SSB  CET06 (GN/BN) C168a-9 Ground
      SSC  CET07 (GY/OG) C168a-4 Ground
      SSD  CET08 (BN/WH) C168a-10 Ground
      SSE  CET18 (GY/YE) C168a-7 Ground
      LPC  CET09 (YE/VT) C168a-3 Ground
      TCC  CET10 (BU/GY) C168a-6 Ground
    • Is any voltage present? 
    1. Yes:  REPAIR the circuit(s) for a short to power. RECONNECT all components. TEST the system for normal operation.
    2. No:  GO to A5  .
  5. A5 CHECK THE RESISTANCE OF THE SOLENOID FIELD CIRCUIT 
    • Measure the resistance between the transaxle solenoid body leadframe main electrical connector C168a pin 5, component side and the suspect solenoid pin, component side and compare the value to the specifications in the table below.
      SHIFT SOLENOID REFERENCE

      Shift Solenoid Solenoid Body Leadframe Pin C168 pin 5 (Component Side)
      SSA  C168a pin 8 C168 pin 5
      SSB  C168a pin 9 C168 pin 5
      SSC  C168a pin 4 C168 pin 5
      SSD  C168a pin 10 C168 pin 5
      SSE  C168a pin 7 C168 pin 5
      LPC  C168a pin 3 C168 pin 5
      TCC  C168a pin 6 C168 pin 5
      SOLENOID RESISTANCE VALUES: SHIFT SOLENOID A (SSA), SHIFT SOLENOID B (SSB), SHIFT SOLENOID C (SSC), SHIFT SOLENOID D (SSD), TORQUE CONVERTER CLUTCH (TCC) AND LINE PRESSURE CONTROL (LPC)

      Temperature Resistance (ohms)
      °C °F
      -20 to -10 -4 to 14 3.24-5.13
      -10 to 0 14-32 3.43-5.32
      0-10 32-50 3.62-5.51
      10-20 50-68 3.81-5.70
      20-30 68-86 4.00-5.89
      30-40 86-104 4.19-6.08
      40-50 104-122 4.38-6.27
      50-60 122-140 4.57-6.46
      60-70 140-158 4.76-6.65
      70-80 158-176 4.95-6.83
      80-90 176-194 5.13-7.02
      90-100 194-212 5.32-7.21
      SOLENOID RESISTANCE VALUES: SHIFT SOLENOID E (SSE) (ON/OFF)

      Temperature Resistance (ohms)
      °C °F
      -20 to -10 -4 to 14 15.45-24.35
      -10 to 0 14-32 16.35-25.25
      0-10 32-50 17.25-26.15
      10-20 50-68 18.15-27.05
      20-30 68-86 19.05-27.95
      30-40 86-104 19.95-28.85
      40-50 104-122 20.85-29.75
      50-60 122-140 21.75-30.65
      60-70 140-158 22.65-31.54
      70-80 158-176 23.54-32.44
      80-90 176-194 24.44-33.34
      90-100 194-212 25.34-34.24
    • Is the resistance within specifications? 
    1. Yes:  INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - 2.5L or ELECTRONIC ENGINE CONTROLS - 3.0L (4V) . RECONNECT all components. TEST the system for normal operation.
    2. No:  REMOVE the main control cover. REFER to MAIN CONTROL COVER . INSPECT the solenoid body for foreign material such as metal shavings on the exposed metal contacts or other components. CLEAR the solenoid body and RECHECK the resistance values. If the resistance values are still out of specification, GO to A6  . INSTALL a new solenoid(s). REFER to SOLENOIDS . RECONNECT all components. TEST the system for normal operation.
  6. A6 CHECK THE SOLENOID BODY LEADFRAME FOR AN OPEN 
    • Remove the solenoid body leadframe. Refer to SOLENOID BODY LEADFRAME .
    • Measure the resistance between the solenoid body leadframe main electrical connector C168, component side and the corresponding solenoid pins using the following chart.
      SOLENOID BODY LEADFRAME MAIN CONNECTOR PIN NUMBER REFERENCE

      Solenoid Body Leadframe Main Connector Pin Number Circuit Function
      3 LPC  solenoid control circuit
      4 SSC  control circuit
      5 Solenoid power supply circuit
      6 TCC  solenoid control circuit
      7 SSE  control circuit
      8 SSA  control circuit
      9 SSB  control circuit
      10 SSD  control circuit
      Fig 1: Identifying Solenoid Body Leadframe-To-Solenoid Connector Pins
      G06376635Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  INSTALL a new solenoid(s). REFER to SOLENOIDS . RECONNECT all components. TEST the system for normal operation.
    2. No:  INSTALL a new solenoid body leadframe. REFER to SOLENOID BODY LEADFRAME .
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