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Pinpoint Test A: Shift Solenoids

WARNING: This page is about a different car, the 2006 Mercury Montego and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to the Transaxle Vehicle Harness Connector illustration preceding these pinpoint tests.
  1. A1 ELECTRONIC DIAGNOSTICS 
    • Check to make sure the transmission harness connector is fully seated, pins are fully engaged in the connector and in good condition before proceeding.
    • Key in OFF position.
    • Connect the scan tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the scan tool: Retrieve DTC Codes..
    • Are their any transmission DTCs fault present? 

    Yes:  For shift solenoids SSA and SSB, GO to  A2. For shift solenoids PCA, SSC, SSD, SSE, SSF and TCC, GO to  A4.

    No:  CLEAR all DTCs. ROAD TEST to verify if concern is still present. Concern could be intermittent. If concern is still present or reappears go to the appropriate pinpoint test steps: For shift solenoids SSA and SSB, GO to  A2. For shift solenoids PCA, SSC, SSD, SSE, SSF and TCC, GO to  A4.

  2. A2 CHECK RESISTANCE OF THE ON/OFF SOLENOID CIRCUIT 
    • Key in OFF position.
    • Remove the transmission control module (TCM).
    • Measure the resistance at the transaxle bulkhead electrical connector between pin 2 and ground for SSB.
      Fig 1: Checking Resistance Of On/Off Solenoid Circuit (1 Of 2)
      G04657255Courtesy of FORD MOTOR CO.
    • Measure the resistance at the transaxle bulkhead electrical connector between pin 5 and ground for SSA.
      Fig 2: Checking Resistance Of On/Off Solenoid Circuit (2 Of 2)
      G04657256Courtesy of FORD MOTOR CO.
    • Is the resistance between 11-15 ohms? 

    Yes:  Install a new transmission control module (TCM) and re-flash to the latest level calibration. CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to  A3.

    No:  GO to  A3.

  3. A3 CHECK RESISTANCE OF THE ON/OFF SOLENOIDS 
    • Remove the transaxle side cover.
    • Remove the wiring connector from the effected solenoid (SSA or SSB).
  4. A3 CHECK RESISTANCE OF THE ON/OFF SOLENOIDS (Continued) 
    • Measure the resistance between solenoid pin 1 and ground of the affected solenoid.
      Fig 3: Checking Resistance Of On/Off Solenoids
      G04657257Courtesy of FORD MOTOR CO.
    • Is each solenoid resistance between 11-15 ohms? 

    Yes:  INSTALL a new internal wire harness or repair effected circuit.

    No:  INSTALL a new main control.

  5. A4 CHECK LINEAR SOLENOID SHORT TO GROUND 
    • Key in OFF position.
    • Remove the transmission control module (TCM).
    • Measure the resistance at transaxle bulkhead electrical connector between pins 1, 3, 4, 9, 10, 11, 14, 16, 17, 18, 21, 22 and ground.
      Fig 4: Checking Linear Solenoid Short To Ground
      G04657258Courtesy of FORD MOTOR CO.
    • Is each resistance greater than 10,000 ohms? 

    Yes:  GO to  A5.

    No:  GO to  A6.

  6. A5 CHECK RESISTANCE OF THE LINEAR SOLENOID(S) 
    • Inspect both sides of the transmission control module for damaged or pushed out pins, corrosion or damaged seals.
    • For the TCC solenoid, measure the resistance between pin 4 and pin 9 at the transaxle.
    Fig 5: Checking Resistance Of Linear Solenoid(s) (1 Of 6)
    G04657259Courtesy of FORD MOTOR CO.
  7. A5 CHECK RESISTANCE OF THE LINEAR SOLENOID(S) (Continued) 
    • For the PCA solenoid, measure the resistance between pin 3 and pin 1 at the transaxle.
      Fig 6: Checking Resistance Of Linear Solenoid(s) (2 Of 6)
      G04657260Courtesy of FORD MOTOR CO.
    • For the SSF solenoid, measure the resistance between pin 21 and pin 16 at the transaxle.
      Fig 7: Checking Resistance Of Linear Solenoid(s) (3 Of 6)
      G04657261Courtesy of FORD MOTOR CO.
    • For the SSC solenoid, measure the resistance between pin 11 and pin 10 at the transaxle.
      Fig 8: Checking Resistance Of Linear Solenoid(s) (4 Of 6)
      G04657262Courtesy of FORD MOTOR CO.
  8. A5 CHECK RESISTANCE OF THE LINEAR SOLENOID(S) (Continued) 
    • For the SSD solenoid, measure the resistance between pin 17 and pin 18 at the transaxle.
      Fig 9: Checking Resistance Of Linear Solenoid(s) (5 Of 6)
      G04657263Courtesy of FORD MOTOR CO.
    • For the SSE solenoid, measure the resistance between pin 14 and pin 22 at the transaxle.
      Fig 10: Checking Resistance Of Linear Solenoid(s) (6 Of 6)
      G04657264Courtesy of FORD MOTOR CO.
    • Is the resistance between 5.0 - 5.6 ohms? 

    Yes:  Install a new transmission control module (TCM) and re-flash to the latest level calibration. CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to  A6.

    No:  GO to  A6.

  9. A6 CHECK CONTINUITY OF THE INTERNAL HARNESS 
    • Remove the transaxle side cover.
    • Remove the wiring connector from the effected solenoid(s) (PCA, SSC, SSD, SSE, SSF and TCC).
    • Measure the resistance between the bulkhead connector and the affected solenoid electrical connector.
    • Is each solenoid resistance less than 5 ohms? 

    Yes:  INSTALL a new main control.

    No:  INSTALL a new internal wire harness or repair effected circuit.

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