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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Automatic Transmission (6R80)) >> Diagnosis And Testing >> Pinpoint Tests - OSC Equipped Vehicle >> Pinpoint Tests >> Pinpoint Test A: Transmission Control Solenoids

Pinpoint Test A: Transmission Control Solenoids

WARNING: This page is about a different car, the 2013 Ford Mustang. 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 TRANSMISSION LEADFRAME CONNECTOR  illustration within the Transmission Connector Layouts procedure.
NOTE: If the scan tool is unable to access the transmission PIDs, refer to the ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) (SECTION 0) .
NOTE: Read and record all DTCs.
NOTE: Without a voltage signal return to the PCM, the Transmission Solenoid Power Control (TSPC) relay is commanded OFF. By using a fused jumper between a transmission solenoid control circuit and the signal return circuit, the TSPC relay circuit will supply power to the transmission solenoids when the ignition is cycled from OFF to ON. Do not use a solenoid control circuit that may be at fault, refer to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS  for a fault listing.
  1. A1 CHECK THE SOLENOID POWER CIRCUIT FOR VOLTAGE 
    • Ignition OFF.
    • Disconnect: Transmission C1575.
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    • NOTE: Do not use a solenoid control circuit that may be at fault. Failure to jump pin 5 to a known good solenoid control circuit can cause incorrect diagnostic results. For additional information, refer to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS  for a fault listing.

      Using the chart, connect a fused jumper between any one of the 7 solenoid control circuit pins on transmission vehicle harness C1575 and C1575-5.

      Transmission Vehicle Harness C1575 Solenoid Control Circuit
      C1575-9 Shift Solenoid A (SSA) CET05 (BU/GN)
      C1575-14 Shift Solenoid B (SSB) CET06 (GN/BN)
      C1575-13 Shift Solenoid C (SSC) CET07 (GY/OG)
      C1575-10 Shift Solenoid D (SSD) CET08 (BN/WH)
      C1575-8 Shift Solenoid E (SSE) CET18 (GY/YE)
      C1575-16 Line Pressure Control (LPC) solenoid CET09 (YE/VT)
      C1575-3 Torque Converter Clutch (TCC) solenoid CET10 (BU/GY)
    • Ignition ON.
    • Measure the voltage from the transmission vehicle harness C1575-7 circuit CET25 (BU/GN) harness side to ground.
      Fig 1: Measuring Voltage From Transmission Vehicle Harness C1575-7 Circuit CET25 (BU/GN) Harness Side To Ground
      G07475901Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to  A4.
    • No  : GO to A2.
  2. A2 CHECK THE SOLENOID POWER CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: PCM C175T (5.0L Engine).
    • Disconnect: PCM C1381T-50 (3.7L Engine).
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    • Vehicle equipped with 5.0L engine, measure the resistance from the PCM C175T-50 to the transmission vehicle harness C1575-7, circuit CET25 (BU/GN).
      Fig 2: Measuring Resistance From PCM C175T-50 To Transmission Vehicle Harness C1575-7, Circuit CET25 (BU/GN)
      G07475902Courtesy of FORD MOTOR CO.
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    • Vehicle equipped with 3.7L engine, measure the resistance from the PCM C1381T-50 to the transmission vehicle harness C1575-7, circuit CET25 (BU/GN).
      Fig 3: Measuring Resistance From PCM C1381T-50 To Transmission Vehicle Harness C1575-7, Circuit CET25 (BU/GN)
      G07475902Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
  3. A3 CHECK THE SOLENOID POWER CIRCUIT FOR A SHORT TO GROUND 
    • Vehicle equipped with 5.0L engine, measure the resistance from the PCM C175T-50, circuit CET25 (BU/GN) of the transmission vehicle harness to ground.
      Fig 4: Measuring Resistance From PCM C175T-50, Circuit CET25 (BU/GN) Of Transmission Vehicle Harness To Ground
      G07482732Courtesy of FORD MOTOR CO.
    • Vehicle equipped with 3.7L engine, measure the resistance from the PCM C1381T-50, circuit CET25 (BU/GN) of the transmission vehicle harness to ground.
      Fig 5: Measuring Resistance From PCM C1381T-50, Circuit CET25 (BU/GN) Of Transmission Vehicle Harness To Ground
      G07482732Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10, 000 ohms? 
  4. A4 CHECK SOLENOID CONTROL CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: PCM C175T (5.0L Engine).
    • Disconnect: PCM C1381T-50 (3.7L Engine).
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    • Vehicles equipped with a 5.0L engine, measure the resistance of the solenoid control circuits using the following chart.
      PCM Circuit Transmission
      C175T-43 SSA CET05 (BU/GN) C1575-9
      C175T-44 SSB CET06 (GN/BN) C1575-14
      C175T-45 SSC CET07 (GY/OG) C1575-13
      C175T-10 SSD CET08 (BN/WH) C1575-10
      C175T-11 SSE CET18 (GY/YE) C1575-8
      C175T-34 LPC solenoid CET09 (YE/VT) C1575-16
      C175T-46 TCC solenoid CET10 (BU/GY) C1575-3
    • Vehicles equipped with a 3.7L engine, measure the resistance of the solenoid control circuits using the following chart.
      PCM Circuit Transmission
      C1381T-45 SSA CET05 (BU/GN) C1575-9
      C1381T-43 SSB CET06 (GN/BN) C1575-14
      C1381T-44 SSC CET07 (GY/OG) C1575-13
      C1381T-10 SSD CET08 (BN/WH) C1575-10
      C1381T-11 SSE CET18 (GY/YE) C1575-8
      C1381T-34 LPC solenoid CET09 (YE/VT) C1575-16
      C1381T-46 TCC solenoid CET10 (BU/GY) C1575-3
    • Is the resistance less than 5 ohms on each circuit? 
    • Yes  : GO to A5.
    • No  : REPAIR the transmission vehicle harness circuit which measured greater than 5 ohms. CLEAR the DTCs.

      TEST the system for normal operation.

  5. A5 CHECK SOLENOID CONTROL CIRCUITS FOR A SHORT TO GROUND 
    • Measure the resistance between the transmission vehicle harness C1575, harness side and ground using the following chart.
      Transmission Control Circuit Ground
      C1575-7 Solenoid Power CET25 (BU/GN) Ground
      C1575-9 SSA CET05 (BU/GN) Ground
      C1575-14 SSB CET06 (GN/BN) Ground
      C1575-13 SSC CET07 (GY/OG) Ground
      C1575-10 SSD CET08 (BN/WH) Ground
      C1575-8 SSE CET18 (GY/YE) (CET16 (WH/BU) 3.5L only) Ground
      C1575-16 LPC solenoid CET09 (YE/VT) Ground
      C1575-3 TCC solenoid CET10 (BU/GY) Ground
    • Is the resistance greater than 10, 000 ohms? 
    • Yes  : GO to A6.
    • No  : REPAIR the transmission vehicle harness circuit which measured less than 10, 000 ohms. CLEAR the DTCs.

      TEST the system for normal operation.

  6. A6 CHECK SOLENOID CONTROL CIRCUITS FOR A SHORT TO POWER 
    • Connect: PCM C175T (5.0L Engine).
    • Connect: PCM C1381T (3.7L Engine).
    • Ignition ON.
    • Measure for voltage between the transmission vehicle harness C1575, harness side and ground using the following chart.
      Transmission Control Circuit Ground
      C1575-9 SSA CET05 (BU/GN) Ground
      C1575-14 SSB CET06 (GN/BN) Ground
      C1575-13 SSC CET07 (GY/OG) Ground
      C1575-10 SSD CET08 (BN/WH) Ground
      C1575-8 SSE CET18 (GY/YE) Ground
      C1575-16 LPC solenoid CET09 (YE/VT) Ground
      C1575-3 TCC solenoid CET10 (BU/GY) Ground
    • Is voltage greater that 3 volts? 
    • Yes  : REPAIR the transmission vehicle harness circuit shorted to power. CLEAR the DTCs. TEST the system for normal operation.
    • No  : GO to A7.
  7. A7 CHECK COMPONENT RESISTANCE 
    • Measure resistance of the solenoid between the transmission molded leadframe C1575, component side using the following chart.
      Transmission Solenoid Transmission Ohms
      C1575-7 SSA C1575-9 4.8 to 5.6
      C1575-7 SSB C1575-14 4.8 to 5.6
      C1575-7 SSC C1575-13 4.8 to 5.6
      C1575-7 SSD C1575-10 4.8 to 5.6
      C1575-7 SSE C1575-8 17.5 to 18.6
      C1575-7 LPC solenoid C1575-16 4.8 to 5.6
      C1575-7 TCC solenoid C1575-3 4.8 to 5.6
    • Is the resistance within specifications? 
    • Yes  : REFER to MAIN CONTROL  to inspect for stuck valves or debris. If no problems are found, INSTALL suspected solonoid. REFER to SHIFT SOLENOIDS (SS) . CLEAR the DTCs. TEST the system for normal operation.
    • No  : GO to A8.
  8. A8 CHECK SOLENOID RESISTANCE 
    • Remove the molded leadframe from the main control. Refer to SHIFT SOLENOIDS (SS) . Inspect for metallic contamination and clean the solenoid and molded leadframe terminals.
    • Measure and record the resistance of the suspected solenoid. For solenoid location, refer to SHIFT SOLENOIDS (SS) . Compare the recorded value with the chart below.
      Solenoid Ohms
      SSA 4.8 to 5.6
      SSB 4.8 to 5.6
      SSC 4.8 to 5.6
      SSD 4.8 to 5.6
      SSE 17.5 to 18.6
      LPC solenoid 4.8 to 5.6
      TCC solenoid 4.8 to 5.6
    • Is the solenoid resistance within specification? 
    • Yes  : INSTALL a new molded leadframe, REFER to SHIFT SOLENOIDS (SS) . CLEAR the DTCs. TEST the system for normal operation.
    • No  : REPLACE the suspected solenoid which failed the resistance check. REFER to SHIFT SOLENOIDS (SS) . CLEAR the transmission adaptive tables and perform the adaptive drive cycle. REFER to SHIFT POINT ROAD TEST . TEST the system for normal operation.
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