Pinpoint Test A: Shift Solenoids
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Refer to the Transaxle Vehicle Harness Connector illustrations within the TRANSAXLE CONNECTOR LAYOUTS procedure.
- A1 ELECTRONIC DIAGNOSTICS
- Check to make sure the transaxle harness connector is fully seated, pins are fully engaged in the connector and in good condition before proceeding.
- Ignition OFF.
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Retrieve DTCs.
- Are there any transmission DTC faults present?
- Yes: For Shift Solenoid A (SSA) and Shift Solenoid B (SSB), GO to A2. For the Pressure Control Solenoid A (PCA), Shift Solenoid C (SSC), Shift Solenoid D (SSD), Shift Solenoid E (SSE), Shift Solenoid F (SSF) and Torque Converter Clutch (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.
- A2 CHECK RESISTANCE OF THE ON/OFF SOLENOID CIRCUIT
- Ignition OFF.
- Remove the Transmission Control Module (TCM).
- Measure the resistance at the transaxle bulkhead electrical connector between pin 2 and ground for SSB .
- Measure the resistance at the transaxle bulkhead electrical connector between pin 5 and ground for SSA .
- Is the resistance between 11-15 ohms?
- A3 CHECK RESISTANCE OF THE ON/OFF SOLENOIDS
- Remove the transaxle side cover.
- Remove the wiring connector from the affected solenoid (SSA or SSB ).
- Measure the resistance between solenoid pin 1 and ground of the affected solenoid.
- Is the solenoid resistance between 11-15 ohms?
- Yes: INSTALL a new internal wire harness or REPAIR affected circuit.
- No: INSTALL a new main control.
- A4 CHECK LINEAR SOLENOID SHORT TO GROUND
- Ignition OFF.
- Remove the TCM .
- Measure the resistance between the transaxle bulkhead electrical connector pin and ground using the following table below:TRANSAXLE BULKHEAD ELECTRICAL CONNECTOR REFERENCE TABLE
Pin Number Circuit Function 1 Pressure Control Solenoid A (PCA) ground 3 PCA signal 4 Torque Converter Clutch (TCC) ground 9 TCC signal 10 Shift Solenoid C (SSC) ground 11 SSC signal 14 Shift Solenoid E (SSE) signal 16 Shift Solenoid F (SSF) ground 17 Shift Solenoid D (SSD) signal 18 SSD ground 21 SSF signal 22 SSE ground - Is each resistance greater than 10,000 ohms?
- A5 CHECK RESISTANCE OF THE LINEAR SOLENOID(S)
- Inspect both sides of the TCM 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.
- For the PCA solenoid, measure the resistance between pin 3 and pin 1 at the transaxle.
- For the SSF solenoid, measure the resistance between pin 21 and pin 16 at the transaxle.
- For the SSC solenoid, measure the resistance between pin 11 and pin 10 at the transaxle.
- For the SSD solenoid, measure the resistance between pin 17 and pin 18 at the transaxle.
- For the SSE solenoid, measure the resistance between pin 14 and pin 22 at the transaxle.
- Is the resistance between 5.0 - 5.6 ohms?
- A6 CHECK CONTINUITY OF THE INTERNAL HARNESS
- Remove the transaxle side cover.
- Remove the wiring connector from the affected solenoid(s) (PCA , SSC , SSD , SSE , SSF and TCC ).
- Measure the resistance between the bulkhead connector and the affected solenoid electrical connector.
- Is the resistance less than 5 ohms?
- Yes: INSTALL a new main control.
- No: INSTALL a new internal wire harness or repair affected circuit.