Ford Escape Quiz
Powertrain

Diagnosis and Testing — Transmission Cooling

In this manual: Powertrain
General Information — 26Chassis — 160Powertrain — 323Electrical — 356Body and Paint — 290
4steps
~24min
2/5difficulty
Done 0 of 4

Operating Principles

Inspection and Verification

  1. Verify the customer concern by operating the vehicle to duplicate the condition.
  2. If the inspection reveals an obvious concern that can be readily identified, repair as necessary.
  3. Install new components if a transmission fluid leak is found in any of the transmission cooling components.
  4. If the cause is not visually apparent, verify the symptom and refer to the Symptom Chart.

Symptom Chart


Symptom Action
  • Transmission Overheating
 GO to Pinpoint Test A

Pinpoint Tests


PINPOINT TEST A: TRANSMISSION OVERHEATING

Normal Operation and Fault Symptoms

  • Restricted or damaged transmission fluid cooler or transmission fluid cooler lines
    • Inspect the transmission fluid cooler and transmission fluid cooler lines for damage or restriction. INSTALL new components as necessary. REFER TO: Transmission Fluid Cooler Lines (307-02B Transmission Cooling — Automatic Transmission — HF45, Removal and Installation).
  • Active grille shutter stuck in the closed position
    • Address any active grille shutter concerns. REFER TO: Active Grille Shutter (501-02 Front End Body Panels, Diagnosis and Testing).
  • Leaks in the system
    • Inspect the transmission fluid cooler and transmission fluid cooler lines for leaks. REPAIR as necessary.
  • Internal transmission concerns
    • Inspect the transmission fluid pump and filter assembly. Refer to: Transmission (307-01B Automatic Transmission — Automatic Transmission — HF45, Disassembly).
    • Inspect the internal transmission components for signs of overheating. REFER TO: Transmission (307-01B Automatic Transmission — Automatic Transmission — HF45, Disassembly).
      REFER TO: Transmission Case Cover (307-01B Automatic Transmission — Automatic Transmission — HF45, Removal and Installation).

Possible Sources

  • Damaged transmission cooler or cooler lines
  • Inoperative active grille shutter
  • Transmission fluid leak
  • Internal transmission components
Diagnostic steps are not provided for this symptom or diagnostic trouble code. REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

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