Automatic Transmission
Special Tool(s)
Material
DTC Chart
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
For all other DTCs, refer to Section 303-14.
Diagnostic PID Chart
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Module PID Chart
Symptom Chart
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
In most circumstances, the PCM sets DTCs to help guide with diagnostics. Refer to the DTC Chart before using the symptom chart. The Condition column lists the vehicle condition. The Possible Sources column lists a detailed vehicle condition. The Action column lists the action to be performed to determine the cause of the condition. Each action lists the components that can cause the condition and the individual components in that system. The components are listed in order of disassembly. Use the list of components and the required action to focus on disassembly inspections for the root cause of the concern.
Pinpoint Tests 3.5L/3.7L Ti-VCT
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
- Carry out OBD procedures KOEO and KOER.
- Retrieve and record all DTCs.
- Repair all non-transmission DTCs first.
- Repair all transmission DTCs second.
- Clear all CMDTCs and attempt to repeat them.
- Repair all CMDTCs.
- If only pass codes are obtained, refer to Component Tests in this section for further information and diagnosis.
Power is routed through the transmission solenoid power control relay (inside the PCM) to all transmission solenoids. If the power circuit to the transmission solenoids or the transmission solenoid power control relay fails open, all solenoids are failed electrically off. Check for open, short to ground or the transmission connector disconnected. The transmission solenoid power control relay disables power to the transmission solenoids when certain transmission DTCs are set.
Pinpoint Test A: SSA
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSA is a VFS. The PCM controls current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSA
- PCM
PINPOINT TEST A: SHIFT SOLENOID A
Pinpoint Test B: SSB
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSB is a VFS. The PCM controls current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSB
- PCM
PINPOINT TEST B: SHIFT SOLENOID B
Pinpoint Test C: SSC
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSC is a VFS. The PCM controls the current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSC
- PCM
PINPOINT TEST C: SHIFT SOLENOID C
Pinpoint Test D: SSD
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSD is a VFS. The PCM controls current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSD
- PCM
PINPOINT TEST D: SHIFT SOLENOID D
Pinpoint Test E: SSE
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSE is an On/Off solenoid. The PCM controls current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSE
- PCM
PINPOINT TEST E: SHIFT SOLENOID E
Pinpoint Test F: TRANSMISSION SOLENOID POWER CONTROL
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The transmission solenoid power control relay controls vehicle power to all solenoids. Power is routed through the transmission solenoid power control relay (inside the PCM) to all transmission solenoids. If the power circuit to the transmission solenoids or the transmission solenoid power control relay fails open, all solenoids are failed electrically off. Check for open, short to ground or the transmission connector disconnected. The transmission solenoid power control relay disables power to the transmission solenoids when certain transmission DTCs are set.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- PCM
PINPOINT TEST F: TRANSMISSION SOLENOID POWER CONTROL
Pinpoint Test G: TFT
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TFT sensor is located in the transmission solenoid body. The resistance value of the TFT sensor varies with temperature change. The PCM monitors the voltage drop across the TFT sensor to determine the temperature of the transmission fluid. When the ignition is turned to the RUN position, the PCM uses this initial input signal to determine whether a cold start shift schedule is necessary. The cold start shift schedule allows delayed shifts when the transmission fluid is cold. The PCM inhibits TCC operation at low transmission fluid temperatures and adjusts line pressure to temperature.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- TFT sensor
- PCM
PINPOINT TEST G: TRANSMISSION FLUID TEMPERATURE SENSOR
Pinpoint Test H: TCC
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TCC solenoid is used in the transmission control system to control the application, modulation and release of the torque converter.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- TCC solenoid
- PCM
PINPOINT TEST H: TORQUE CONVERTER CLUTCH SOLENOID
Pinpoint Test I: PCA
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The PCA ( LPC solenoid) is a VFS. The PCA solenoid is an electro-hydraulic actuator combining a solenoid and a regulating valve. It supplies the pressure which regulates transmission line pressure. This is done by producing resisting forces to the main regulator and line modulator circuits. These 2 pressures control clutch application pressures.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- PCA
- PCM
PINPOINT TEST I: PRESSURE CONTROL SOLENOID A
Pinpoint Test J: TR sensor
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TR sensor is a 6-pin connector located inside the transmission at the manual control lever. The TR sensor sends a signal to the PCM to start the vehicle when the manual control lever is in PARK or NEUTRAL. The TR sensor contains 4 switches that are monitored by the PCM to determine the manual control lever position.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- TR sensor
- PCM
PINPOINT TEST J: TRANSMISSION RANGE SENSOR
Pinpoint Test K: TSS sensor
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TSS sensor is a Hall-effect sensor that sends a signal to the PCM that indicates transmission turbine shaft input speed. The TSS sensor provides converter turbine speed information for TCC strategy.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- TSS sensor
- PCM
PINPOINT TEST K: TURBINE SHAFT SPEED SENSOR
Pinpoint Test L: OSS sensor
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The OSS sensor is a Hall-effect sensor that sends a signal to the PCM that indicates transmission output shaft speed. The OSS sensor is used for TCC control and shift scheduling.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- OSS sensor
- PCM
PINPOINT TEST L: OUTPUT SHAFT SPEED SENSOR
Pinpoint Test 3.5L GTDI
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
- Carry out OBD procedures KOEO and KOER.
- Using the scan tool, retrieve all DTCs.
- Repair all non-transmission DTCs first.
- Repair all transmission DTCs second.
- Clear all CMDTCs and attempt to repeat them.
- Repair all CMDTCs.
- If only pass codes are obtained, refer to Component Tests in this section for further information and diagnosis.
Power is routed through the transmission solenoid power control relay (inside the PCM) to all transmission solenoids. If the power circuit to the transmission solenoids or the transmission solenoid power control relay fails open, all solenoids are failed electrically off. Check for open, short to ground or the transmission connector disconnected. The transmission solenoid power control relay disables power to the transmission solenoids when certain transmission DTCs are set.
Follow the diagnostic sequence to diagnose and repair the concern the first time.
Pinpoint Test M: SSA
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSA is a VFS. The PCM controls current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSA
- PCM
PINPOINT TEST M: SHIFT SOLENOID A
Pinpoint Test N: SSB
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSB is a VFS. The PCM controls current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSB
- PCM
PINPOINT TEST N: SHIFT SOLENOID B
Pinpoint Test O: SSC
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSC is a VFS. The PCM controls the current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSC
- PCM
PINPOINT TEST O: SHIFT SOLENOID C
Pinpoint Test P: SSD
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSD is a VFS. The PCM controls current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSD
- PCM
PINPOINT TEST P: SHIFT SOLENOID D
Pinpoint Test Q: SSE
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
SSE is an On/Off solenoid. The PCM controls current flow through the solenoid ground input.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- SSE
- PCM
PINPOINT TEST Q: SHIFT SOLENOID E
Pinpoint Test R: Transmission solenoid power control
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The transmission solenoid power control relay controls vehicle power to all solenoids. Power is routed through the transmission solenoid power control relay (inside the PCM) to all transmission solenoids. If the power circuit to the transmission solenoids or the transmission solenoid power control relay fails open, all solenoids are failed electrically off. Check for open, short to ground or the transmission connector disconnected. The transmission solenoid power control relay disables power to the transmission solenoids when certain transmission DTCs are set.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- PCM
PINPOINT TEST R: TRANSMISSION SOLENOID POWER CONTROL
Pinpoint Test S: TFT sensor
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TFT sensor is located in the transmission solenoid body. The resistance value of the TFT sensor varies with temperature change. The PCM monitors the voltage drop across the TFT sensor to determine the temperature of the transmission fluid. When the ignition is turned to the RUN position, the PCM uses this initial input signal to determine whether a cold start shift schedule is necessary. The cold start shift schedule allows delayed shifts when the transmission fluid is cold. The PCM inhibits TCC operation at low transmission fluid temperatures and adjusts line pressure to temperature.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- TFT sensor
- PCM
PINPOINT TEST S: TRANSMISSION FLUID TEMPERATURE SENSOR
Pinpoint Test T: TCC
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TCC solenoid is used in the transmission control system to control the application, modulation and release of the torque converter.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- TCC solenoid
- PCM
PINPOINT TEST T: TORQUE CONVERTER CLUTCH SOLENOID
Pinpoint Test U: PCA
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The PCA ( LPC solenoid) is a VFS. The PCA is an electro-hydraulic actuator combining a solenoid and a regulating valve. It supplies the pressure which regulates transmission line pressure. This is done by producing resisting forces to the main regulator and line modulator circuits.
NOTE: Without a voltage signal return to the PCM, the transmission solenoid power control relay is commanded off. Using a fused jumper wire between a transmission solenoid control circuit and the signal return circuit, the transmission solenoid power control relay circuit supplies 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 DTC Charts in this section for a fault listing.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- PCA
- PCM
PINPOINT TEST U: LINE PRESSURE CONTROL SOLENOID
Pinpoint Test V: TR sensor
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TR sensor is a 6-pin connector located inside the transmission at the manual control lever. The TR sensor sends a signal to the PCM to start the vehicle when the manual control lever is in PARK or NEUTRAL. The TR sensor contains 4 switches that are monitored by the PCM to determine the manual control lever position.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- TR sensor
- PCM
PINPOINT TEST V: TRANSMISSION RANGE SENSOR
Pinpoint Test W: TSS sensor
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The TSS sensor is a Hall-effect sensor that sends a signal to the PCM that indicates transmission turbine shaft input speed. The TSS sensor provides converter turbine speed information for TCC strategy.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- TSS sensor
- PCM
PINPOINT TEST W: TURBINE SHAFT SPEED SENSOR
Pinpoint Test X: OSS sensor
Diagnostic Overview
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.
Refer to Wiring Diagrams Cell 29 for schematic and connector information.
Normal Operation and Fault Conditions
The OSS sensor is a hall-effect sensor that sends a signal to the PCM that indicates transmission output shaft speed. The OSS sensor is used for TCC control and shift scheduling.
DTC Fault Trigger Conditions
-
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- OSS sensor
- PCM
PINPOINT TEST X: OUTPUT SHAFT SPEED SENSOR
Component Tests
Line Pressure Test
NOTICE: Carry out the Line Pressure Test prior to carrying out the Stall Speed Test. If the line pressure is low at stall, do not carry out the Stall Speed Test or further transmission damage will occur. Do not maintain WOT in any transmission range for more than 5 seconds.
NOTICE: Do not mistake the transmission fluid drain plug for the line pressure tap plug or the transmission fluid level will be low and will need to be refilled.
This test verifies the line pressure is within specification.
- Connect the transmission fluid pressure gauge to the line pressure tap.
- Start the engine and check the line pressure. Refer to the Pressure Chart to determine if the line pressure is within specification.
Pressure Chart
- If the line pressure is not within specification, see the Line Pressure Diagnosis Chart for line pressure concerns.
- When the pressure tests are completed, install the line pressure tap
plug.
- Tighten to 9 Nm (80 lb-in).
Line Pressure Diagnosis Chart
Stall Speed Test
WARNING: Block all wheels, set the parking brake and firmly apply the service brake to reduce the risk of vehicle movement during this procedure. Failure to follow these instructions may result in serious personal injury.
NOTICE: Carry out Line Pressure Test prior to carrying out Stall Speed Test. If the line pressure is low at stall, do not carry out Stall Speed Test or further transmission damage will occur.
The Stall Speed Test checks:
- TCC operation and installation.
- holding ability of the forward clutch.
- low/reverse clutch.
- planetary OWC.
- engine driveability concerns.
Conduct this test with the engine coolant and transmission fluid at correct levels and at normal operating temperature.
Apply the park brake firmly for each Stall Speed Test.
Stall Speed Chart
- Connect the scan tool.
- NOTE: If the recorded rpm exceeds the maximum limits, release the
accelerator pedal immediately because clutch slippage is indicated.
In each of the following ranges Drive, Low and Reverse, press the accelerator pedal to the floor and hold it just long enough to let the engine get to WOT. While conducting this test, do not hold the throttle open for more than 5 seconds each time.
- Record the results in each range.
- After each range, move the selector lever to NEUTRAL and run the engine at 1,000 rpm for 15 seconds to cool the torque converter before conducting the next test.
- Use the Stall Speed Diagnosis Chart for corrective actions.
- NOTE: The stall speed in REVERSE will be lower.
If stall speeds were too high, see the Stall Speed Diagnosis Chart. If stall speeds were too low, first check engine idle speed and tune up. If engine is OK, remove torque converter and check for slippage.
Stall Speed Diagnosis Chart
Leakage Inspection
NOTE: When diagnosing transmission leaks, the source of the leak must be positively identified prior to repair. If the vehicle is driven extensively between adding the fluorescent additive and performing the leak test, the leaking oil can spread and make identifying the location of the leak difficult.
- Clean off any transmission fluid from the top and bottom of the torque converter housing, the front of the case and rear face of the engine and oil pan. Clean the torque converter area by washing with a nonflammable solvent and blow dry with compressed air.
- Add Dye-Lite ATF Power Steering Fluid Leak Detection Dye to the transmission fluid. Use one 30 ml (1 fl. oz) of dye solution for every 3.8 L (4 qt) of transmission fluid.
- Start and run the engine until the transmission reaches its normal operating temperature. Raise the vehicle on a hoist and run the engine occasionally shifting to the DRIVE and REVERSE ranges to increase pressure within the transmission. Using a black light, observe the back of the cylinder block and top of the torque converter housing for evidence of fluid leakage. Run the engine until transmission fluid leakage is evident and the probable source of leakage can be determined.
- If the source of the leak is obvious, repair as required. Leaks from the
torque converter housing can originate from several locations. The paths
which the fluid takes to reach the bottom of the torque converter housing
are shown in the illustration. The 5 steps following correspond with the
numbers in the illustration.
- Transmission fluid leaking by the converter hub seal lip will tend to move along the drive hub and onto the back of the torque converter. Except in the case of a total seal failure, transmission fluid leakage by the lip of the seal will be deposited on the inside of the torque converter housing only, near the outside diameter of the housing.
- Transmission fluid leakage by the outside diameter of the converter impeller hub seal and the case will follow the same path that leaks by the ID of the converter hub seal follow.
- Transmission fluid leakage from the converter cover weld or the converter-to-flexplate stud weld will appear at outside diameter of torque converter on the back face of the flexplate and in the converter housing only near the flexplate. If a converter-to-flexplate lug, lug weld or converter cover weld leak is suspected, remove the converter and pressure check.
- Transmission fluid leakage from the bolts inside the converter housing will flow down the back of the torque converter housing. Leakage may be from loose or missing bolts.
- Engine oil leaks from the rear main oil.
- Remove the torque converter.
- Using a black light, observe the torque converter housing. Inspect for evidence of dye from the pump bolts, pump seal, and torque converter hub seal. Repair as required.
- If the source of the leak is not evident, continue with this procedure to leak test the torque converter.
- Install the torque converter in the arbor press. Support the torque converter on the mounting pads.
- Install the Leak Tester, Torque Converter 307-421 into the torque converter hub.
- Secure the press. Apply enough force from the press to seal of the Leak Tester, Torque Converter 307-421 into the torque converter hub.
- Connect a compressed air supply to the Leak Tester, Torque Converter 307-421.
- With air pressure applied to the valve, inspect for leaks at the converter hub weld and seams. A soap bubble solution can be applied around those areas to aid in the diagnosis. If any leaks are present, install a new torque converter.
- With air pressure applied to the valve, inspect for leaks at the stud or mounting pad and balance weight welds. A soap bubble solution can be applied around those areas to aid in the diagnosis. If any leaks are present, install a new torque converter.
- After leaks are repaired, clean remaining transmission fluid dye from serviced areas.
Forward Clutch System
For forward (1,2,3,4) clutch operation, REFER to Hydraulic System or Mechanical System.
Forward Clutch
Direct Clutch System
For direct clutch operation, REFER to Hydraulic System or Mechanical System.
Direct Clutch System
Intermediate Clutch System
For intermediate clutch operation, REFER to Hydraulic System or Mechanical System.
Intermediate Clutch System
Low/Reverse Clutch System
For low/reverse clutch operation, REFER to Hydraulic System or Mechanical System.
Low/Reverse Clutch System
Overdrive Clutch System
For overdrive clutch system operation, REFER to Hydraulic System or Mechanical System.
Overdrive Clutch System
Low One Way Clutch
For low OWC system operation REFER to Hydraulic System or Mechanical System.
NOTICE: Do not clean in water or with water-based solvents. Damage to the component may occur.
NOTE: The low OWC cannot be disassembled.
Clean and inspect the low OWC for cracks and damaged splines. The internal splined section should rotate counterclockwise and lock when rotated clockwise. If any damage is found or the clutch does not rotate or lock, INSTALL a new low OWC.
Specifications, Description and Operation
SPECIFICATIONS Material a 6F50 transmission. b 6F55 transmission. Torque Specifications a Refer to the procedure in this section. General Specifications Solenoid Operation Chart a&n ...General Procedures
Solenoid Body Identification Procedure Original Solenoid Body Service Tag Using the scan tool, select Powertrain, Transmission and Transmission Solenoid Body Identification from the toolbox icon a ...Other materials:
MyKey
Programming/Changing Configurable Settings
Use the information display to access your configurable MyKey settings:
1. Switch the ignition on using an admin key. If your vehicle has
push-button start, place the intelligent access key fob into the backup
slot. The location of your backup slot is i ...
In-Vehicle Repair
Intake Manifold
Removal
NOTICE: During engine repair procedures, cleanliness is extremely
important. Any foreign material, including any material created while cleaning
gasket surfaces that enters the oil passages, coolant passages or the oil pan,
may cause engine failure.
NOTICE: Whene ...
Installation
Engine
Special Tool(s)
Material
NOTICE: Whenever turbocharger air intake system components are
removed, always cover open ports to protect from debris. It is important that no
foreign material enter the system. The turbocharger compressor vanes are
susceptible to damage from even small par ...