Section 977 (Four-Wheel Drive Systems (ESOF) -- F150 Pickup)
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Diagnosis And Testing
- Four-Wheel Drive Systems - Mechanical Shift
- Notes
- Special Tool(s)
- Inspection and Verification
- 4x4 Module (PCM) Diagnostic Trouble Code (DTC) Index
- Symptom Chart
- Connector Circuit Reference
- Pinpoint Tests
- Pinpoint Test A: No Communication With the 4x4 Module (PCM)
- Pinpoint Test B: The Front Axle Does Not Engage/Disengage Correctly/Makes Noise In 2H Under Heavy Throttle
- Pinpoint Test C: The Vehicle Does Not Shift Between 2WD and 4WD Modes Correctly
- Pinpoint Test D: The Vehicle Does Not Shift Between 4H and 4L Modes Correctly
- Pinpoint Test E: 4WD Does Not Engage At Speed Correctly
- Pinpoint Test F: The 4x4 System Jumps Out Of Gear
- Pinpoint Test G: Straightline Driveline Wind-up
- Pinpoint Test H: Mechanical Shift On The Fly (MSOF) Functional Test
- Pinpoint Test I: The Instrument Cluster 4L And 4H Indicators Do Not Operate Correctly/Do Not Operate/Flash
- Four-Wheel Drive Systems - Electronic Shift
- Notes
- Special Tool(s)
- Inspection and Verification - Electronic Shift
- 4x4 Module (PCM) Diagnostic Trouble Code (DTC) Index
- Symptom Chart
- Connector Circuit Reference
- Pinpoint Tests
- Pinpoint Test J: No Communication With the 4x4 Module (PCM)
- Pinpoint Test K: The Front Axle Does Not Engage/Disengage Correctly/Makes Noise In 2H Under Heavy Throttle
- Pinpoint Test L: The Vehicle Does Not Shift Between 2WD And 4WD Modes Correctly
- Pinpoint Test M: The Vehicle Does Not Shift Between 4H And 4L Modes Correctly
- Pinpoint Test N: 4WD Does Not Engage At Speed Correctly
- Pinpoint Test O: The 4x4 System Jumps Out Of Gear
- Pinpoint Test P: Straightline Driveline Wind-up
- Pinpoint Test Q: Electronic Shift On The Fly (ESOF) Functional Test
- Pinpoint Test R: The Instrument Cluster 4L And 4H Indicators Do Not Operate Correctly/Do Not Operate/Flash
- Four-Wheel Drive Systems - Mechanical Shift
- Removal And Installation