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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1551 (Automatic Transmission - Diagnostic Trouble Code (DTC) Charts And Pinpoint Tests - 3.5L ECOBOOST (272KW 370PS) & 5.0L 32V Ti-VCT) >> Diagnostic Trouble Code (DTC) Charts and Pinpoint Tests - 5.0L 32V Ti-VCT >> Pinpoint Tests >> Pinpoint Test A : Transmission Control Solenoids >> Pinpoint Test A : Transmission Control Solenoids

Pinpoint Test A : Transmission Control Solenoids

WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

  1. A1 CHECK THE SOLENOID POWER CIRCUIT FOR VOLTAGE

    NOTE: Read and record all DTCs.
    NOTE: The PCM removes power from the Transmission Solenoid Power Control (TSPC) circuit when the key is on and the transmission harness is disconnected. Use the meter's min/max function to record the voltage before the PCM removes power.

    • Ignition OFF.
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
      NOTE: Use a meter with a min/max feature and/or recording capabilities to obtain accurate measurements.
    • Set the meter to measure DC voltage.
    • Set the meter range to greater than 15 volts.
    • Enable the min/max or recording feature.
      NOTE: Make sure all test connections are made at the transmission harness connector before the ignition key is turned to the ON position.
    • Connect the meter leads to C1575-7 and ground.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1575-7
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the maximum recorded voltage greater than 11 volts? 

    Yes  GO to  A4
    No  GO to  A2

  2. A2 CHECK THE SOLENOID POWER CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Disconnect: C1381E . Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1381E-91
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C1575-7

    Is the resistance less than 3 ohms? 

    Yes  GO to  A3
    No  REPAIR transmission vehicle harness circuit for an open.

  3. A3 CHECK THE SOLENOID POWER CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1381E-91
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  INSTALL a new PCM, REFER to: POWERTRAIN CONTROL MODULE (PCM) . PROGRAM the PCM with the latest calibration level. PERFORM the Solenoid Body Strategy Data Download procedure. Refer to: Transmission Strategy Download .
    No  REPAIR transmission vehicle harness circuit short to ground.

  4. A4 CHECK SOLENOID CONTROL CIRCUITS FOR AN OPEN

    • Ignition OFF.
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

    Is the resistance less than 3 ohms on the suspect circuit? 

    Yes  GO to  A5
    No  REPAIR the transmission vehicle harness circuit. CLEAR the DTCs.

  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:
      Positive Lead Measurement / Action Negative Lead
      C1575-7
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-9
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-14
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-13
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-10
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-8
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-16
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-3
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms on the suspect circuit? 

    Yes  GO to  A6
    No  REPAIR the transmission vehicle harness circuit. CLEAR the DTCs.

  6. A6 CHECK SOLENOID CONTROL CIRCUITS FOR A SHORT TO POWER

    • Ignition ON.
    • Measure the voltage between the transmission vehicle harness C1575 , harness side and ground using the following chart:
      Positive Lead Measurement / Action Negative Lead
      C1575-9
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-14
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-13
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-10
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-8
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-16
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1575-3
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage detected? 

    Yes  REPAIR the circuit for a short to power. CLEAR the DTCs.
    No  GO to  A7

  7. A7 CHECK FOR FLUID CONTAMINATION

    • Inspect for fine metallic contamination at the molded leadframe to solenoid connections.

    Is visible metallic contamination present? 

    Yes  REMOVE and discard the foam strip if equipped. REMOVE and CLEAN the molded lead frame and solenoid terminals with clean transmission fluid. Refer to: Shift Solenoids (SS) .GO to  A8
    No  GO to  A8

  8. A8 CHECK MOLDED LEADFRAME RESISTANCE

    • Measure resistance of the suspect solenoid circuit between the transmission harness connector C1575 (component side), and the transmission molded leadframe using the chart below:
      Positive Lead Measurement / Action Negative Lead
      Transmission Harness Component Side (see chart below)
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Lead Frame
      Transmission  Solenoid  Solenoid Terminal 
      C1575-9 SSA 9
      C1575-14 SSB 14
      C1575-13 SSC 13
      C1575-10 SSD 10
      C1575-8 SSE 8
      C1575-16 LPC solenoid 16
      C1575-3 TCC solenoid 3

    Is the resistance less than 3 ohms on the suspect circuit? 

    Yes  GO to  A9
    No  INSTALL a new molded leadframe. INSTALL new foam strip (Service Part Number FL3Z-14B167-A) between molded leadframe and the solenoids. Refer to: Shift Solenoids (SS) .

  9. A9 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. 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  The system is operating correctly at this time. INSTALL new foam strip (Service Part Number FL3Z-14B167-A) between molded leadframe and the solenoids. Refer to: Shift Solenoids (SS) .
    No  INSTALL a new solenoid for the solenoid that failed the resistance check. INSTALL new foam strip (Service Part Number FL3Z-14B167-A) between molded leadframe and the solenoids. Refer to: Shift Solenoids (SS) .
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