Section 75 (Automatic Transmission - Diagnosis - 4R70W)
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 Mercury Grand Marquis, 2002 Lincoln Town Car, 2002 Ford Crown Victoria, 2001 Mercury Mountaineer, and 2001 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
- Application
- Identification
- Description & Operation
- Introduction
- Electronic Control System
- Powertrain Control Module
- Input Sensors
- Notes
- Air Conditioning Clutch Switch
- Anti-Lock Brake Speed Sensor
- Brake Pedal Position Switch
- Digital Transmission Range Sensor
- Electronic Ignition
- Engine Coolant Temperature Sensor
- Intake Air Temperature Sensor
- Mass Airflow Sensor
- Output Shaft Speed Sensor
- Programmable Speedometer/Odometer Module
- Throttle Position Sensor
- Transmission Control Switch/Transmission Control Indicator Light
- Transmission Fluid Temperature Sensor
- Vehicle Speed Sensor
- Output Devices
- Shift Interlock System
- Component Locations
- Programming
- Trouble Shooting
- Preliminary Inspection
- Symptom Diagnosis (Electronic)
- Harsh Forward Engagement Only
- Harsh Reverse Engagement Only
- Some Or All Shifts Missing
- Some Or All Shifts Early Or Late
- Erratic Or Hunting Shifts
- Soft Or Slipping Shifts
- Harsh Shifts
- No 1st Gear In Drive, Engages In Higher Gear
- No Manual 1st Or 2nd Gear
- No 1-2, 2-3 Or 3-4 Upshift In "D" Position
- No 4-3, 3-2 Or 2-1 Downshift In "D" Position
- No TCC Engagement
- TCC Always Engaged
- TCC Cycling, Shuddering Or Chattering
- Poor Vehicle Performance
- Engine Will Not Crank
- Symptom Diagnosis (Mechanical)
- Notes
- No Forward Gears
- No Reverse
- Harsh Reverse Engagement
- Harsh Forward Engagement
- Delayed/Soft Reverse Engagement
- Delayed/Soft Forward Engagement
- Some Or All Shifts Missing
- Early/Late Shift Speeds
- Erratic/Hunting Shifting
- Soft/Slipping Shift Feel
- Harsh Shift Feel
- No 1st Gear In Drive, Engages In Higher Gear
- No Manual Low Gear
- No Manual 2nd Gear
- No 1-2 Shift In "D" Position
- No 2-3 Shift In "D" Position
- No 3-4 Shift In "D" Position
- No 4-3 Downshift In "D" Position
- No 3-2 Downshift In "D" Position
- No 2-1 Downshift In "D" Position
- No Torque Converter Clutch Application
- Torque Converter Clutch Always Applied
- Torque Converter Clutch Cycling/Shudder/Chatter
- No Engine Braking In 2nd Gear, Manual 2nd Or 1st Gear
- Poor Vehicle Performance
- Transmission Overheating
- Clutch & Band Applications
- Performance Tests
- Self-Diagnostic System
- Diagnostic Tests
- Symptom Tests
- Removal & Installation
- Wiring Diagrams