Ford Fusion Manuals

Ford Fusion: Automatic Transmission - 6-Speed Automatic Transmission – 6F35 / Diagnosis By Symptom. Diagnosis and Testing

Symptom Chart(s)

Symptom Chart: Automatic Transmission

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

In most circumstances the PCM sets a DTC to help guide with diagnostics. Refer to the DTC Chart before using the Symptom Chart.

Symptom Possible Sources Action
  • Engagement Concerns
  • No Forward
  • Forward clutch damaged or worn.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • No Reverse
  • Direct clutch damaged or worn.
    REFER to: Direct Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Low\reverse clutch damaged or worn.
    REFER to: Low/Reverse Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Harsh Reverse
  • Direct clutch damaged or worn.
    REFER to: Direct Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Damaged center support.
    REFER to: Low/Reverse Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Harsh Forward
  • Forward clutch damaged or worn.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Damaged center support.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Delayed/Soft Reverse
  • Direct clutch damaged or worn.
    REFER to: Direct Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Low\reverse clutch damaged or worn.
    REFER to: Low/Reverse Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Delayed Soft/Forward
  • Forward clutch damaged or worn.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • No Forward and No Reverse
  • Check the transmission fluid level.
    REFER to: Transmission Fluid Level Check (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, General Procedures).
  • Inspect the filter and pump assembly.
    REFER to: Pump Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Description and Operation).
  • Delayed/Soft Forward and Reverse
  • Inspect the filter and pump assembly.
    REFER to: Pump Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Description and Operation).
  • Neutral after Launch
  • Low one-way clutch assembly damaged.
    REFER to: Low One-Way Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Harsh Stop/Start event
  • NOTE: TFT must be greater than 38ºC (100ºF) for the PCM to command the transmission fluid auxiliary pump on.
  • Verify Fluid level.
    REFER to: Transmission Fluid Level Check (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, General Procedures).
    If fluid level is ok, Clear any DTC, then carry out prime procedure: Using a diagnostic scan tool, prime the transmission fluid auxiliary pump. Using a diagnostic scan tool, Key ON, Engine OFF, command TRANS_PMP_CMD to 80% for 30 seconds. Carry out a road test until there is a stop/start event. If the restart is harsh, repeat the Transmission Fluid Auxiliary Pump prime procedure. Continue road test and evaluate each stop/start event. Repeat prime procedure until three consecutive normal stop/start events are achieved. Clear DTCs. If the concern stills exists, follow symptom chart for harsh forward engagement.
  • Shift Concerns
  • No 1-2 Shift/Harsh/Soft/Slipping
  • Intermediate clutch damaged or worn.
    REFER to: Intermediate Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Description and Operation).
  • Forward clutch assembly damaged or worn.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Low one-way clutch assembly damaged.
    REFER to: Low One-Way Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • No 2-3 Shift/Harsh/Soft/Slipping
  • Direct clutch damaged or worn.
    REFER to: Direct Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Forward clutch assembly damaged or worn.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Intermediate clutch damaged or worn.
    REFER to: Intermediate Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Description and Operation).
  • 2-3 Shift Hesitation After A Cold Soak
  • Verify Fluid level.
    REFER to: Transmission Fluid Level Check (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, General Procedures).
    If fluid level is okay, these hesitation events should be deemed a normal characteristic and do not cause any abnormal wear or durability concern. The hydraulic circuit can partially drain back during an extended engine off condition and could take a couple applications (2-3 shifts) to work any air out of the hydraulic circuit. No further work on the transmission should take place for that condition.
  • No 3-4 Shift/Harsh/Soft/Slipping
  • Overdrive clutch assembly damaged or worn.
    REFER to: Overdrive Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Forward clutch assembly damaged or worn.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Direct clutch damaged or worn.
    REFER to: Direct Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • No 4-5 Shift/Harsh/Soft/Slipping
  • Direct clutch damaged or worn.
    REFER to: Direct Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Overdrive clutch damaged or worn.
    REFER to: Overdrive Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Forward clutch damaged or worn.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • No 5-6 Shift/Harsh/Soft/Slipping
  • Intermediate clutch assembly damaged or worn.
    REFER to: Intermediate Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Description and Operation).
  • Direct clutch assembly damaged or worn.
    REFER to: Direct Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Only Gears 1,2,3,4 Available
  • Forward clutch assembly stuck on.
    REFER to: Forward Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Only Gears 3 and 5 Available
  • Direct clutch assembly stuck on.
    REFER to: Direct Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Only Gears 2 and 6 Available
  • Intermediate clutch assembly stuck on.
    REFER to: Intermediate Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Description and Operation).
  • Only Gears 4,5,6 Available
  • Overdrive clutch assembly stuck on.
    REFER to: Overdrive Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Only Gears 1 and R Available
  • Low/reverse clutch stuck on.
    REFER to: Low/Reverse Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Low one-way clutch assembly damaged.
    REFER to: Low One-Way Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • No Engine Braking in Low
  • Low/reverse clutch damaged or worn.
    REFER to: Low/Reverse Clutch Assembly (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Torque Converter Operation Concerns
  • No Apply
  • TCC damaged or worn.
    REFER to: Torque Converter Clutch (TCC) (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Always Applied (engine stalls)
  • TCC damaged or worn.
    REFER to: Torque Converter Clutch (TCC) (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Cycling/Shutter/Chatter
  • TCC damaged or worn.
    REFER to: Torque Converter Clutch (TCC) (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Other Concerns
  • Selector Lever High Effort
  • Selector lever cable routed wrong, binding or damaged.
    REFER to: Selector Lever Cable - 1.5L EcoBoost (118kW/160PS) – I4 (307-05A Automatic Transmission External Controls - 6-Speed Automatic Transmission – 6F35, Removal and Installation).
  • External Leaks
  • Damaged or worn seals.
    REFER to: Leakage Inspection (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
  • Noise
  • Engine drive accessories, suspension, CV joints,
    REFER to: Noise, Vibration and Harshness (NVH) (100-04 Noise, Vibration and Harshness, Diagnosis and Testing).
  • Vibration
  • Engine drive accessories, suspension, CV joints, transmission fluid cooler tubes,
    REFER to: Noise, Vibration and Harshness (NVH) (100-04 Noise, Vibration and Harshness, Diagnosis and Testing).
  • No Park Range
  • Inspect the selector lever cable for correct adjustment.
    REFER to: Selector Lever Cable Adjustment (307-05 Automatic Transmission External Controls - 6-Speed Automatic Transmission – 6F15) .
  • INSPECT the manual control lever for damage, wear or correct installation.
    REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
    REFER to: Transmission (307-01 Automatic Transmission - 6-Speed Automatic Transmission – 6F15) .
  • INSPECT the park pawl, park pawl actuator, and TR sensor for damage or wear.
    REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
    REFER to: Transmission (307-01 Automatic Transmission - 6-Speed Automatic Transmission – 6F15) .
  • INSPECT the final drive differential and final drive chain for damage.
    REFER to: Transmission (307-01A Automatic Transmission - 6-Speed Automatic Transmission – 6F35, Overhaul).
    REFER to: Transmission (307-01 Automatic Transmission - 6-Speed Automatic Transmission – 6F15) .
  • Overheating
  • Transmission fluid cooling system damaged.
    REFER to: Transmission Cooling (307-02A Transmission Cooling - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).

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    Transmission Air Pressure Test. Diagnosis and Testing

    Transmission Air Pressure Test Item Description 1 Foward clutch 2 Direct clutch 3 Intermediate clutch 4 Low reverse clutch 5 Overdrive clutch NOTE: The center support contains an air bleed for the forward and Low reverse clutch circuits...

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