Transfer Case - Four-Wheel Drive Systems

• Specifications
  • General Specifications
  • Torque Specifications
• Description And Operation
  • Four Wheel Drive (4WD) Systems
• Diagnosis And Testing
  • Four Wheel Drive (4WD) Systems
    • Notes
    • Principles of Operation
      • Notes
      • Heat Protection Mode
      • 4WD Indicator Light
      • 4WD Messages in Message Center
      • Inspection and Verification
      • Four-Wheel Drive (4WD) Control Module Symptom Chart
    • Pinpoint Tests
      • Pinpoint Test A: Functional Test
        • Notes
        • Possible Causes
        • Pinpoint Test A: Functional Test
      • Pinpoint Test B: No Communication With The 4-Wheel Drive (4WD) Control Module
        • Normal Operation
        • Possible Causes
        • Pinpoint Test B: No Communication With The Four-Wheel Drive (4WD) Control Module
      • Pinpoint Test C: 4WD Control Module Battery Voltage Is High Or Low
        • Normal Operation
        • Possible Causes
        • Pinpoint Test C: 4WD Control Module Battery Voltage Is High Or Low
      • Pinpoint Test D: 4WD Control Module Received No/Invalid Data From PCM
        • Normal Operation
        • Possible Cause
        • Pinpoint Test D: 4WD Control Module Received No/Invalid Data From Pcm
      • Pinpoint Test E: 4WD Control Module Received No/Invalid Data From ABS Module
        • Normal Operation
        • Possible Cause
        • Pinpoint Test E: 4WD Control Module Received No/Invalid Data From Abs Module
      • Pinpoint Test F: CAN Communications Bus Fault
        • Normal Operation
        • Possible Causes
        • Pinpoint Test F: Can Communications Bus Fault
      • Pinpoint Test G: Vehicle Has No Or Inadequate Torque At Rear Wheels
        • Normal Operation
        • Possible Causes
        • Pinpoint Test G: Vehicle Has No Or Inadequate Torque At Rear Wheels
      • Pinpoint Test H: The 4WD Indicator Does Not Operate Correctly
        • Normal Operation
        • Possible Causes
        • Pinpoint Test H: The 4WD Indicator Does Not Operate Correctly
      • Pinpoint Test I: Vehicle Binds In A Turn Or Resists Turning
        • Normal Operation
        • Possible Causes
        • Pinpoint Test I: Vehicle Binds In A Turn Or Resists Turning
      • Pinpoint Test J: Tire/Axle Out Of Acceptable Range
        • Normal Operation
        • Possible Causes
        • Pinpoint Test J: Tire/Axle Out Of Acceptable Range
• Removal And Installation
  • Four Wheel Drive (4WD) Control Module
    • Removal and Installation