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Pinpoint Test A: Transaxle Control Solenoids

WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to the Transaxle Internal Harness Diagram illustration Transaxle Connector Layouts .
NOTE: Refer to the Transaxle Vehicle Harness Connector illustration Transaxle Connector Layouts .
  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 diagnostic tool.
    • Carry out the Key ON Engine OFF (KOEO) Test until continuous DTCs have been displayed.
    • Enter the Output Test Mode.
    • Select the mode ALL ON. Push START to turn outputs ON. Push STOP to turn outputs OFF.
    • Does vehicle enter Output Test Mode? 
    1. YES  : Go to  A2 .
    2. NO  : PRESS START. If vehicle does not enter Output Test Mode, REFER to the Introduction - Gasoline Engines article.
  2. A2 CHECK THE SOLENOID CIRCUIT FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Transaxle Vehicle Harness C168
    • 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 Electrical 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 PCM transaxle electrical C175T and transaxle harness C168 using the following chart.
      Shift Solenoid Transaxle Vehicle Harness C168 PCM Transaxle C175T
      Shift Solenoid A (SSA) CET05 (BU/GN) C168-13 C175T-39
      Shift Solenoid B (SSB) CET06 (GN/BN) C168-16 C175T-27
      Shift Solenoid C (SSC) CET07 (GY/OG) C168-17 C175T-40
      Shift Solenoid D (SSD) CET08 (BN/WH) C168-12 C175T-28
      Shift Solenoid E (SSE) CET19 (VT/GY) C168-1 C175T-38
      Line Pressure Control (LPC) CET09 (YE/VT) C168-18 C175T-35
      Torque Converter Clutch (TCC) CET10 (BU/GY) C168-14 C175T-29
    • 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 transaxle vehicle harness C168 and ground.
      Shift Solenoid Transaxle Vehicle Harness C168 Ground
      SSA CET05 (BU/GN) C168-13 Ground
      SSB CET06 (GN/BN) C168-16 Ground
      SSC CET07 (GY/OG) C168-17 Ground
       
      SSD CET08 (BN/WH)      		 C168-12 Ground
      SSE CET19 (VT/GY) C168-1 Ground
      LPC CET09 (YE/VT) C168-18 Ground
      TCC CET10 (BU/GY) C168-14 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 transaxle vehicle harness C168 and ground.
      Shift Solenoid Transaxle Vehicle Harness C168 Ground
      SSA CET05 (BU/GN) C168-13 Ground
      SSB CET06 (GN/BN) C168-16 Ground
      SSC CET07 (GY/OG) C168-17 Ground
       
      SSD CET08 (BN/WH)      		 C168-12 Ground
      SSE CET19 (VT/GY) C168-1 Ground
      LPC CET09 (YE/VT) C168-18 Ground
      TCC CET10 (BU/GY) C168-14 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 transaxle solenoid body C168-15, component side and the suspect solenoid pin, component side and compare the value to the specifications in the table below.
      Shift Solenoid Transaxle C168 Component Side Transaxle C168 Component Side
      SSA CET05 (BU/GN) C168-13 C168-15
      SSB CET06 (GN/BN) C168-16 C168-15
      SSC CET07 (GY/OG) C168-17 C168-15
       
      SSD CET08 (BN/WH)      		 C168-12 C168-15
      SSE CET19 (VT/GY) C168-1 C168-15
      LPC CET09 (YE/VT) C168-18 C168-15
      TCC CET10 (BU/GY) C168-14 C168-15
      SOLENOID RESISTANCE VALUES: SSA, SSB, SSC, SSD, TCC AND 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: 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 article. 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, INSTALL a new solenoid body assembly. REFER to Solenoid Body Assembly . RECONNECT all components. TEST the system for normal operation.
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